Thursday, December 22, 2011

Designing Mixed Analog Chips and Circuits

These are some updates on Analog and Mixed Design pages online. A/D Converters are important because the world is full of mainly analog signals and parameters. Processing, Filtering, Analyzing and Computing data is best done by software (firmware).

These days the term of firmware can only be used for very small devices. This is because we have more memory, flash and computation ability in tiny footprints. So even a mini gadget can have a Tiny OS sometimes even a Virtual Machine. What is a VM it is is a OS in a OS. Java, .Net.

Time-interleaved Analog-to-digital Converters

Time-interleaved Analog-to-digital Converters

TIADCs and TI-ADCs an Article by Dr. Christian Vogel.
"The idea of a time-interleaved ADC (TIADC) is to use a system of M parallel channels, which alternately take one sample (time-interleaved sampling). Thereby, the sampling frequency of one channel does not need to fulfill the Nyquist criterion; however, when in the digital domain all samples are merged into one output sequence the overall sampling frequency fulfills the Nyquist criterion"

The Designer's Guide Community - A Guide to Simulation & Modeling for Analog & RF Circuit Designers

A Site where analog, mixed-signal and RF circuit designers come to learn about simulation, modeling and design. There are a number of very practical papers on simulation and modeling on the Analysis, Modeling, and Theory pages. A collection of useful example models can be found on the Verilog-AMS page.

Designing Analog Chips by Hans Camenzind

Hans Camenzind book on Analog CMOS design is a good reference for students and covers Power Electronic concepts like Switching Regulators and Low Drop-Out Regulators. The Delta-Sigma Converter A/D and Zero-Crossing Detectors on Mixed Design. Communications circuits like Timers and Oscillators . Phase-Locked Loops and Filters too.

Monday, December 19, 2011

Web Studio is a powerful HMI SCADA software

Using a browser from any Thin Client PC or Tablet view Status, Annunciations, Alarms and monitor online history data. Visualize data for Analysis or Tuning. Monitor real time process parameters to optimize the plant production.

Now plants have to be energy conscious and keep in mind the environment health, like air and water. Most important is a consistent yield of a job which is within stated quality and reliability. Worker/Plant safety is also a part of process quality and cost effectiveness..

Web Studio is a powerful HMI/SCADA software

Web Studio - SCADA Open HMI Software

Some Nice Features

Security: Multi-levels of application security. Easily restrict application access.

Reports: Create and E-mail concise reports in RTF, XML, PDF, CSV, and HTML file formats (via remote connection). Store reports internally, or automatically download to a remote location via new FTP configuration interface.

Scalable: Reduce development costs by easily scaling projects from one interface/operating environment to another.

Industrial control and Networking – Freescale

Wired and wireless industrial communications protocols and human machine interface. Motorola Semiconductors became Freescale. You may recall that some rugged Mosfets, Bridges and Drivers were developed by Motorola Semiconductor. The Factory Automation have the resources reference to integrate this expertise of high-reliability electronics into your process control systems.

Industrial control and Networking - Freescale

Battery-operated mobile robots

Battery-operated mobile robots, to high-performance processors that control leading factory robots and vision systems. Control and motion in service robots for dangerous, strenuous or repetitive tasks (handling warehouse inventory, assisting nurses, security,construction, mining, industrial cleaning, waste handling, firefighting, rescue.

Friday, December 16, 2011

Wolf Automation – Product Applications

Good application examples of automation and automation components for industrial and other areas.

Wolf Automation - Product Applications

Basic Automation Block can be a Control panel with many electrical components and wires/cables, Controllers, Actuators and Sensors. Actuators are like - AC variable frequency drives, Speed controls, Industrial Automation inverters, DC Drives, Servos, Solenoids, power supplies, and motors,

Wolf Automation - Industrial Automation Distributor

Electrical Control Panel Parts like - terminal blocks, circuit breakers, enclosures, switches, solid state relays, wiring duct, power distribution blocks. mercury relays and fuseblocks. Sensors and encoders like infrared sensors, photoelectric sensors, Thermocouples, Tacho Generators, Proximity Switches, RTD.etc.

Digital & Analog I/O Expansion Modules IDEC MicroSmart Pentra

 IDEC MicroSmart Pentra

For heightened precision and accuracy, you need analog controls, and IDEC can deliver. We offer a wide range of solutions, including 0-10V, 4-20mA, RTD, Thermocouple, Thermistor input modules and ± 10V output modules; there are 8 different modules to choose from, with 12-bit or 16-bit resolution.

To incorporate your sensors, switches, pushbuttons and other digital controls, IDEC offers an array of digital expansion modules with DC inputs, AC inputs, relay outputs and transistor outputs.

Wednesday, December 14, 2011

Antronics Ltd – Project Design Portfolio

Product design and development is for the Innovative Engineer. Here Antronics have on display, some projects and design ideas that have been realized.

Antronics Ltd - Project Design Portfolio

A product design by Antronic - The BT redcare alarm monitoring system provides continuous monitoring of a BT telephone line that links a professionally installed alarm system.

Antronics Ltd – Project Design Portfolio

Antronics Ltd - Embedded Systems Specialists

Consultancy Services to Clients developing Embedded Microprocessor Systems. Design and development of software/firmware for embedded microprocessor and microcontroller systems. Specialized in Products which need "M2M" applications; ie, "machine-to-machine" communications.

delabs Notes

In product development, the most important thing is to communicate and interact with the customer. To get the inputs very clear, goes a long way in customer satisfaction and project's technical success.
Even if the customer is not able to create a Black Box Specifications but is able to indicate the need or problem. Then you can arrive at the specs by incremental prototyping, to gather full requirements.

Wednesday, November 09, 2011

JJS Electronics - EMS and CEM Company

A company based in UK and Czech Republic, which offers a full range of proven, high quality PCB, cable, system, rack and non-electronics based precision electro-mechanical assembly and test services.

JJS Electronics - EMS and CEM Company

JJS Electronics - EMS and CEM Company
"JJS Electronics has a broad contract manufacturing offering rarely seen at other EMS companies, including 'Tier 1's. With our unique mix of electronics, electrical, mechatronics (complex electro-mechanical machine assembly) and top-end configure-to-order assembly/integration services.."

EMS is Electronics Manufacturing Services
CEM is Contract Electronics Manufacturing

JJS Electronics Ltd.,

Wycliffe Industrial Park, Leicester Road, Lutterworth, Leicestershire,
LE17 4HG, United Kingdom

JJS Electronics Sro, Pražská 585, Chomutov, 43001, Česká republika

LM335 Cold Junction Compensation

Temperature Sensors like Thermocouples need cold junction compensation as a part of front end signal conditioning, this is done at the terminal block where the Thermocouple wires are terminated. This design has to be more accurate and broad, if the design we make has to work well in both Tropical and Temperate Climate Zones.

LM335 Cold Junction Compensation

Another Method using a Copper Resistor

If wires of two dissimilar metals are joined at both the ends and the junction formed at one of the ends, is heated more than the other junction, a current flows in the circuit due to Seebeck thermal emf. This effect is used in thermocouple temperature sensors.

The Peltier effect is the converse of above Seebeck effect, which means that if a current is forced through junctions of dissimilar metals, the junction will generate heat or absorb heat (cooling) depending on direction of the applied emf. This effect is used to make portable and small refrigerators. Thermocouple Temperature DPM - DMM

Thermocouple Temperature DPM - DMM

Tuesday, November 08, 2011

The Control of engineering systems

Lab Experiments using A/D and D/A cards. PC Interface. Using Matlab, Learning PID control. DC Motor control. Hovercraft project with PWM and Fans as Actuator of control system, Uses NIDAQ Interface.

The Control of engineering systems

PID Controller Design

"We used a 3-stage fuzzy logic PID to control our system. The kp, ki and kd values were changed depending on the current status of the error signal. For error values above a certain percentage of the desired output (in our case it was 30%) we used a large kp constant to drive the system as hard initially to get up towards the desired final value as quickly as possible...."

Position on a DC Servo Motor

Position on a DC Servo Motor

From - SCCS - Swarthmore College Computer Society

delabs pages on control systems - Industrial Process Control Circuits

Monday, November 07, 2011

Industrial Automation and SCADA

Industrial Automation INSIDER - UK's. Newsletter covers industrial measurement and control systems users and suppliers. Industrial Automation and SCADA

Keeps you abreast with the Technologies related to Industrial Automation and Process Control.

Industrial Automation INSIDER Homepage

"Now in its fourteenth year of publication, Industrial Automation INSIDER (formerly SCADA Insider) is the UK's only independent subscription newsletter providing industrial measurement and control systems users and suppliers with a monthly update on the continuing evolution and convergence of systems technologies."

CMOS Linear Applications – Fairchild Semiconductor

Careful study of CMOS characteristics show that CMOS devices used in a system design can be used for linear building blocks as well as digital blocks.

Utilization of these new devices will decrease package count and reduce supply requirements. The circuit designer now can do both digital and linear designs with the same type of device.

CMOS Linear Applications – Fairchild Semiconductor

CMOS Linear Applications AN-88

CMOS inverters can be paralleled for increased power to drive higher current loads. Loads of 5.0 mA per inverter can be expected under AC conditions.

PNP and NPN bipolar transistors have been used for many years in “complementary” type of amplifier circuits. Now, with the arrival of CMOS technology, complementary P-channel/N-channel MOS transistors are available in monolithic form.

From - Fairchild Semiconductor

Friday, November 04, 2011

Wireless Networking Resources

"Wireless Connectivity is very important for portable electronic devices. The technology has developed so well that small batteries, small flash storage and low power wireless is practical today. This makes Tablets and Wearable computer even closer to becoming the way computing will be done in the future.

The only bottleneck is that the mobile broadband still cannot manage that kind of data load at an affordable price. Something like the WiMax or Bell Labs' lightRadio Cube should take off and remove this Road Block.

We are now waiting for that Historic Invention that makes fiber-broadband and mobile-broadband converge to make the Digitally Connected World a Reality". - Aug 2014 Ananth delabs

Ben Gross - Wireless Networking  - Wireless Networking , Wireless VOIP. Resources related to Wireless Computing Networks.

Wireless Networking Resources

Wireless LAN Association - Non-profit consortium of wireless networking vendors established to educate the market place about wireless networking products, trends and applications..

Broadband Wireless Exchange Magazine -  is the largest web site in the world dedicated to the broadband wireless industry, is an online publication that publishes news and many reference materials.

WirelessDevNet - Wireless Developer - The Wireless Developer Network is an on-line community for information technology professionals interested in mobile computing and communications. Online tutorials and resources and Wireless Industry training courses and events The WDN Library - Look for numerous technical papers and education mWirelessDevNet

IEEE WCET - Wireless Communications - "The IEEE WCET certification shows that the individual has demonstrated mastery of the internationally recognized body of wireless communication knowledge..."

Thursday, November 03, 2011

Open Source Hardware - OSHW Draft Definition

OSHW Draft Definition 0.3 is based on the Open Source Definition for Open Source Software and draft OSHW definition 0.2, further incorporating ideas from the TAPR Open Hardware License.

Open Source Hardware - OSHW Draft Definition

Open Source Hardware (OSHW) is a term for tangible artifacts - machines, devices, or other physical things - whose design has been released to the public in such a way that anyone can make, modify, distribute, and use those things.

Open Source Hardware - OSHW Draft Definition

Open source hardware is hardware whose design is made publicly available so that anyone can study, modify, distribute, make, and sell the design or hardware based on that design. The hardware's source, the design from which it is made, is available in the preferred format for making modifications to it. Ideally, open source hardware uses readily-available components and materials, standard processes, open infrastructure, unrestricted content, and open-source design tools to maximize the ability of individuals to make and use hardware.

Adapteva’s Andreas Olofsson at OHS.

Adapteva - Andreas Olofsson at OHS

Making parallel computing easy to use has been described as “a problem as hard as any that computer science has faced”. With such big challenges ahead, we need to make sure that every programmer has access to cheap and open parallel hardware and development tools.

Open source hardware gives people the freedom to control their technology while sharing knowledge and encouraging commerce through the open exchange of designs.

Open Source Hardware

Open Source Hardware Association
P.O. Box 4743 Boulder, CO 80306

Wednesday, November 02, 2011

Process Automation Usability Project

Process Automation Usability Project Process Automation Usability Project

"The Process Automation Usability Project - a series of forums dedicated to simplifying and streamlining the application and use of process automation technology"

Interface on @UsabilityProj

From ControlGlobal.com -@ControlGlobal

The Wireless Telecommunications Bureau - WTB

Wireless communications services include cellular telephone, paging, personal communications services, and other commercial and private radio services. The Wireless Telecommunications Bureau (WTB) handles all FCC domestic wireless telecommunications programs and policies with some exceptions.

Wireless Telecommunications FCC

Cellular and PCS phones, pagers and two-way radios, radio spectrum.

Federal Communications Commission - FCC

"The FCC was established by the Communications Act of 1934 and is charged with regulating interstate and international communications by radio, television, wire, satellite and cable. (United States). "

Geographic Information Systems - FCC

Geographic Information Systems - FCC

"With these data sets, you will be able to determine the locations and limited technical details of existing towers the FCC collects data on (i.e. Cellular, Paging, Microwave, AM, FM, etc...). This information can be extremely helpful in conducting analysis such as; current service deployment, need/feasibility determinations of new services, co-location of antenna structures, inventorying of structures, network planning, etc..."

Wednesday, October 12, 2011

Surge Protection and Lightning Arrestors

Supplementary to EMI/RFI/EMC Immunity of an Equipment. Many Installations are subject to Highly Disruptive Electrical Environment not just EMI. Depending on the budget and the situation a solution has to be found. Sometimes a CVT or an Isolation Transformer can do a lot of good. Converting all Energy inputs to battery energy and having a Isolated Synthetic Sine Supply may be an expensive but good solution. Either way the devices that face the harsh environment have to be over rated along with these protections.

Siemens Residential Surge Protection

Abstract-This study examines the design and construction of AC Electronics load surge protection in order to carry electric surge load arisen from faults in low voltage electricity system (single phase/220V) by using the principle of electronics load clamping voltage during induction period so that electric voltage could go through to safe load and continue to work. The qualification of the designed device could prevent both transient over voltage and voltage swell.

Design of AC Electronics Load Surge Protection - World Academy of Science, Engineering and Technology - WASET

See a product from the MTL Instruments Group. They have a Comprehensive range of surge protection devices offering solutions for all mains power, process control, network and communications, telecom, wireless and RF systems.

ZoneMaster Series

The ZoneMaster Series is available in units with either a 200 or 170kA surge handling capability. ZoneMaster is engineered to protect the most critical electronic systems, suppressing surges at the main service panel.

EMerge Alliance - Safe Low-voltage Power

EMerge Alliance - Safe Low-voltage Power
"The EMerge Alliance was established to promote the rapid adoption of safe, low-voltage DC power distribution and use in commercial building interiors."
 Promoting adoption of Safe Low-voltage DC Interior Power Distribution.
Highlights
Occupied Space: The first available EMerge Alliance Standard creates a 24-volt DC microgrid for use in commercial interiors, featuring safety and flexibility along with efficiency benefits. See Registered Products.
Data Centers: A 380-volt DC power standard focused on data center and telecommunication applications is under development. View Presentation.

EMerge Alliance 24 volt DC power system demo at Greenbuild 2009. Demo features ceiling grid, lighting, sensors and controls

Tuesday, October 11, 2011

Electrical Safety and Clean Power

This is an educative and important guide for Electrical Equipment Safety. This can be also applied partially to Power Electronics and Home Energy Systems. Electronic Equipment also have to be maintained by Calibrating them and protecting them from environmental parameters like dust, grime, direct sunlight, moisture, humidity, sea wind (brine), corrosive fumes and chemicals. They should not be even placed near machines like a big lathe, sub-sonic or low frequency vibrations.

Electrical Safety Testing Reference Guide

Electrical SafetyElectrical Safety is a Serious Issue Electrical Safety in the workplace is the most important job of an electrical worker. No matter how much training one has received or how much employers try to safeguard their workers, Electrical Safety is ultimately the responsibility of the electrical worker.

Electrical Safety Hazards Handbook

Power Studies, Arc-Flash Hazard Labeling, Data Gathering and Inspection, Engineering Services.

The steps to osha electrical safety

Electrical Design, Lighting and most important Earthing or Grounding. Good Reference Articles and Product Reviews.

Electrical Construction and Maintenancee Power Quality, National Electric Code, Construction, V/D/V, Ops, Equipment Rental Industry Resourc

Earthing or Grounding is something Audio Enthusiasts make a lot of fuss about. The Articles here about Balanced Power, Symmetrical Power Systems and Earthing throw light on ways to counter Audio Noise.

Clean PowerAC Power has the 50/60 Hz noise, now more AC noise can be picked up by poorly designed systems when so many gadgets around. These articles are also relevant for the instrumentation engineer. Dissonance is encountered when you build sensitive strain gauge based measurements or while measuring and transmitting micro-volts from a remote sensor to the dashboard/control panel.
Index of Technical Articles About Balanced Power

International leader in electromagnetic compatibility (EMC) and power quality (PQ). EMC Filters, RFI Suppression Chokes, Feedthrough Components.

Schaffner - EMC/EMI components, harmonic filters & magnetic components.

Schaffner - electromagnetic compatibility

Thursday, October 06, 2011

Analog Devices - Process Control

In my early learning/building days 80s/90s, Chips and Hybrids of Analog Devices and Burr Brown were very expensive and their performance was unquestionable. They made building sensitive and precision instruments easy for an Instrumentation design engineer.

Process Control & Industrial Automation - Analog Devices

Another brand that was good/expensive for analog was Datel-GE. Another GE company called Intersil made the best chip-solutions with cmos. They not only worked well, they were also affordable and had low power consumption.

Programmable Logic Controllers - Analog Devices

Isolated 12 bit Voltage input, using AD8275, AD7920, ADR392 to measure +/-10v ranges. Includes Power Management solution.

Programmable Logic Controllers - Distributed Control Systems

Wednesday, October 05, 2011

Embedded Design Services - PHYTEC America

High quality design and production of OEM-able System on Module (SOM) subassemblies and Rapid Development Kits that accelerate microcontroller-based embedded developments.

PHYTEC America - Rapid Development Kits

Embedded Hardware Design, Software for Embedded Design (Windows and Linux). Complete Turnkey System Design Services.

Embedded Design Services

PCB Layout Design, Low EMI design and Power management. Most connectivity and Interface types.

Embedded Design Services - PHYTEC America

The Freescale i.MX6 Series includes a highly scalable family of embedded processors based on ARM Cortex-A9 technology with single-, dual-, and quad-core offerings delivering up to 1 GHz per core.

System on Module - phyFLEX-i.MX6 - Freescale Cortex A9 Single Dual Quad Core

"The phyFLEX SOM provides a flexible platform designed to plug into the PHYTEC phyFLEX base Carrier Board providing a standard set of physical I/O connectors as well as any other interface circuitry not provided on the phyFLEX module itself."

PHYTEC America
203 Parfitt Way SW, Bainbridge Island, WA 98110

Tuesday, October 04, 2011

Avalue Technology - X86 and RISC Hardware - Taiwan

Designs and manufactures PC-based industrial computer products. Embedded Systems, Single Board Computer and Industrial Motherboard and Computers for HMI. Products include the X86 and RISC ARM platforms.

Intel 945GME Core 2 Duo Tiny embedded system
Avalue Technology - X86 and RISC Hardware - Taiwan

They also have ETX/COMexpress Modules, Peripherals and Ruggedized Systems. Multi-functional Touch Panel PC for Terminals in Medical, Industrial and Business Computing.

Intel 945GME Core 2 Duo Tiny embedded system

Features Include -
  • Intel 945GME / ICH7-M Chipset
  • Dual Realtek RTL8111C Gigabit Ethernet,
  • Display Intel 945GME GMCH Integrated GMA 950 graphic
  • 1 CF, 1 COM, 3 USB
  • SSD One CompactFlash Type I/II socket
  • Supports 2.5" SATA HDD
ODM Process of Service Avalue Technology

"An Original Design Manufacturer -ODM is a company which designs and manufactures a product which is specified and eventually branded by another firm for sale. Such companies allow the brand firm to produce (either as a supplement or solely) without having to engage in the organization or running of a factory."

Address - 7F, 228, Lian-cheng Road, Jhonghe City, Taipei County, Taiwan. - Avalue Map
US Address - 200 Tornillo Way, Asbury Park, NJ 07712-7513, United States. Avalue US Map.

Friday, September 16, 2011

WEMS - EMI filters and Electronic Manufacturing

ISO 9001-2000 Certified Manufacturer of EMI filters and electronic and electromechanical systems.

WEMS - EMI filters and Electronic Manufacturing

"EMI / RFI Filter Division designs and manufactures high reliability input, output, powerline and signal line filters intended for military, aerospace, and high end industrial applications."WEMS - EMI filters and Electronic Manufacturing
Contract Manufacturing facilities of Wems Include -
  • Mechanical and Electronic Engineering
  • PCB Design & Assembly
  • Thru-hole Board Assembly
  • Surface Mount Assembly
  • Inspection & Testing to Aerospace, Military and Medical Standards
Box Build Specialists WEMS Manufacturing facilities offer total vertical integration.

Contract Manufacturing Division encompasses a wide variety of skills and technologies, including high voltage, high current, hydrolics, pneumatics and complete system assembly.

WEMS Electronics
4650 West Rosecrans Ave. Hawthorne, CA 90250

Thursday, September 15, 2011

Austin Circuit Design - Fabrication and Assembly

Austin Circuit Design provides printed circuit board design, fabrication, and assembly services.

AAustin Circuit Design - Fabrication and Assembly
Austin Circuit Design - Fabrication and Assembly

"Circuit Design Consultants, Austin Circuit Design's predecessor, was originally founded in 1985 by Greg Ochoa to fill an immediate need for quick-turn design, fabrication and assembly of prototype printed circuit boards."

Fabrication technologies include: flex, rigid-flex, controlled and mixed dielectrics, blind and buried vias, tented vias, and controlled impedance.

Their assembly partners offer both leaded and lead-free assembly and through-hole, surface mount, and mixed technology, single- or double-sided as required. BGA X-Ray and functional text are available.

Process Control Instrumentation - McShane

New serial interface RS-422 improved upon RS-232 serial communications which was Noise prone. RS-422 uses two signal lines.

RS-485 enhances RS-422 with an ability to connect upto 32 devices. Now we have Industrial Interface methods like Zigbee, Ethernet, Modbus etc.

RS-485 Serial Interface - McShane, Inc.

Temperature Controller for DC Load and TEC

Temperature Controller for DC Load and TEC

Model 5C7-582 or Model 5C7-583 temperature controllers provide automatic biphase heating and cooling control for Thermoelectric (Peltier effect, or TEC) modules.

More about the Company

Founded by Philip Johnson in 1964, McShane, Inc. supplies process control equipment, OEM devices, and industry services from our location south of Cleveland, Ohio.

They also provide services like Leading Edge Custom Built Designs, Prototyping and Manufacturing.

McShane, Inc.
3633 Trails End Dr., Medina, Ohio, 44256-8770, United States.

Friday, September 09, 2011

BOWest - Electrical and Project Engineering

BOWest is an Electrical and Project Engineering Consultancy within the mining, mineral processing and power generation industries.

Their Enginnering Service includes technical support for design, construction, commissioning, optimization and troubleshooting Medium and Large Electrical Systems, Plants and Machines.

BOWest - Electrical and Project Engineering

The Principal Engineer is Trevor A Bowland - BSc BA CEng MIEE

BOWest - Electrical and Project Engineering

Technical reference library in electrical engineering, published by BOWest Pty Ltd, Perth, Western Australia.

Electrical Engineering Reference - BOWest

The library does not include diagrams, it has the Definitions and Formulae for most or even nearly all that you will need in an Engineering Project. They have Theorems and Formulae for Electrical Circuits, Systems and Machines.

BOWest Pty Ltd
PO Box 330, Quinns Rocks WA 6030, Australia

Sunday, September 04, 2011

BD139 and BD140 Complementary transistor

BD139 and BD140 Complementary transistor

This pair is my favorite when driving small solenoids or motors. SOT-32 12 Watts..

BD139 - NPN, 80V and 1.5A, 40 beta min.
BD140 - PNP, 80V and 1.5A, 40 beta min.

This means any small solenoid, relay or DC motor can be controlled with this. I would use it upto 24V DC and max of 1A for applications of full on and full off.

In applications like a regulator or variable motor control, you have to keep in mind the current thru and voltage across the transistor which results in power dissipation. Let us say it is driving 0.5A thru a motor in speed control and the Voltage across is 30V then the dissipation could be 30 x 0.5 = 15 Watts.

That is the reason we use switched regulators or switched controllers. So if we chop the DC and do PWM you have only the Switching losses and also a bit of DC loss. Switched controllers are also green, they save power for the same work done, but generate EMI-RFI and care is required in sensitive uV circuits. The transistors for switching are also special as they have to be fast with less capacitance, hence the mosfets are preferred in those applications. - ananth (san)

Thursday, September 01, 2011

Digital Electronic Stethoscopes

The Heart, Liver and Kidney form a Vital Organ Tripod, on which rests the most Important Organ... Think about it......You are Thinking with it. Rack your Grey Matter with your copy of the Gray's Anatomy; to figure this Puzzle within.Digital Electronic Stethoscopes

Any of these three Legs, of this Tripod, Can be affected by wrong eating and living habits. After a certain age, you have to only Eat what you can burn, The rest is Poison. An electrician knows, If an Equipment is rated for for 12-Volts 3-Amps; He has to use within its Limits. An Electronics Engineer knows that he should never go near the "Absolute Maximum ratings".

Study more about the Vital Organ called Heart, by building an Electronic Stethoscope. See the Block Diagram (SBD) - Digital Stethoscope - TI.com. The sounds are very faint and a low frequency. It is a Bionic Challenge to acquire and amplify these small signals. Learn more about these concepts here ...

The SS30L Electronic Stethoscope will allow you to record and listen to heart sounds and Korotkoff sounds.

Here is a another Semiconductor Application from Maxim-IC Digital Stethoscope.

More Reading -

Mass Spectrometry and Portable Microbe Detector

Human Beings are helped or hampered by many types of Microbes. From the Sub-Microbe virus to animal like Bacterium and plant like Fungi.

An Affordable Portable Electronic Microbe Detector using Mass Spectrometry; may be very useful for Small HealthCare Centers and Homes. If a Person Breathes into an adapter in the instrument, it should show a simple analysis of the Air Microbe Levels. It can also be used for CleanRoom Air Purity Indication.

This is just an idea for an urgent need, this may prevent spread of flu to escalate into an epidemic; due to early detection of microbe, at the root, in every home.

Here are some Mass Spectrometry Resources that students can study and attempt to research to Develop a cost-effective consumer flu-detection device.

Wednesday, August 10, 2011

Basic Analog for Digital Designers

"There is a long gap between engineering college and mid career in a non-engineering position, but technology marches on so a simple method of keeping abreast with the latest developments is required. This application note starts with an overview of the basic laws of physics, progresses through circuits 1 and 2, and explains op amp operation through the use of feedback principles."

Basic Analog for Digital Designers - Application Note 

Basic Analog for Digital Designers

AN9510.2 October 19, 2004 - This is an Analog Reference for the Embedded Engineer. An Application Note from Intersil Tech Reference.
  1. Basic Physics Laws, Circuit Theorems and Analysis
  2. Ohm’s and Kirchoff’s Laws
  3. Voltage and Current Dividers
  4. Thevenin’s and Norton’s Theorems
  5. Networks in the Feedback Path 
  6. Types of Opamp Configurations
  7. Video Amplifiers 
Conclusion

Some algebra, the basic laws of physics, and the basic circuit laws are adequate to gain an understanding of op amp circuits. By applying these tools to various circuit configurations it is possible to predict performance. Further in-depth knowledge is required to do op amp design, and there are many sources where this knowledge can be obtained. Don’t hesitate to try some of these tricks on your local circuit design engineer, but be aware that it may result in a long lecture about circuit design.

Tuesday, August 09, 2011

MAX1169 ADC and PIC Microcontroller

What is the use of a Robot, which cannot perceive its environment in detail. Where can a Control system be effective, if it does not get a "feedback" about its actions. How could one do Analysis and Research or Verify, when he cannot Measure a parameter with good accuracy and resolution.

ADC are the Eyes and Ears for a uC, this brings the Real world as Numbers within the CPU. Without ADC a uC is like a Frog in the Well and has to create an Imaginary World for himself. That is beyond the scope of Engineering.

MAX1169 ADC and PIC Microcontroller

Bring your favorite PIC Microcontroller to his senses. Give him an ability to Perceive the Reality around him. Get him an Analog to Digital Converter and don't forget to code.

MAX1169 ADC is better than 4 1/2 Digit Value. For me the Intersil chip is a Benchmark. Beyond 5 1/2 Resolution may be needed only for Scientific Research.

I would say, 2 1/2 is like Analog Meters/Bar Graphs, 3 1/2 for Control systems, 4 1/2 for T&M and beyond 5 1/2 is for R&D.

Anantha Narayan delabs

Abstract: This application note describes how to interface a MAX1169 analog-to-digital converter (ADC) to a PIC microcontroller. It includes an example circuit and software for a PIC18F442. The software contains function calls to interface the ADC to the PIC microcontroller using the internal MSSP I²C port at 400kHz.

Interfacing the MAX1169 ADC to a PIC Microcontroller - Maxim

Friday, August 05, 2011

Technical Writing and Support

Proper documentation of product after design include Engineering Documentation, Production and Purchasing Inputs, Service Manuals, Operator Manual, Quick Reference Cards. Charts and Tech Catalogs.

There are more important documentation before you start planning product design. These impact everything else, but we should not get stuck up on Red Tape.

Docs, Notes and Logging are essential and need to be simple. ISO 9000/Agilent - "Document what you do. Do what you document."

LaTeX Equation Editor - Equation Maths

Writing Mathematics on the Internet. Witing equations is difficult in a doc, they have to be font independent, that implies images. Webapps do it well.

LyX – The Document Processor

LyX combines the power and flexibility of TeX/LaTeX with the ease of use of a graphical interface. This results in world-class support for creation of mathematical content (via a fully integrated equation editor) and structured documents like academic articles, theses, and books.

LyX – The Document Processor

Also try AbiWord a free word processing program. Excellent for a wide variety of word processing tasks. Has MathML and LaTex input.
  1. OpenOffice.org is an open source office suite and has an equation editor which can export formulas in MathML
  2. GtkMathView is a C++ rendering engine for MathML documents.
  3. MathML Software - Editors
LaTeX Equation Editor -Equation Maths

The interactive LaTex equation editor let's you write and download equations in seconds! You can now integrate the sitmo equation editor with iGoogle or your own site. - sitmo

Wednesday, August 03, 2011

Lighting LED Driving Solutions from ROHM

ROHM’s High Efficiency LED Lighting Solutions

ROHM products include DC/DC and AC/DC Converters which are ideal for Consumer LED Lighting. High Efficiency LED Drivers are also in the Product line.

“Uniform, shadow-free light (fluorescent type LEDs) A proprietary design consisting of a large number of medium-power LEDs creates uniform, shadow-free light.”

Lighting LED Solutions OHM

ROHM Semiconductor and Modules. System LSI, discrete components and module products, utilizing the latest in semiconductor technology.

ROHM – Electronic Components

Tuesday, August 02, 2011

TechnoLogismiki - Scientific Software Development

TechnoLogismiki - Scientific Software Development
 
Greek software company
  • develop and distribute scientific software
  • develop and distribute specialized debugging tools
TechnoLogismiki Works 2008 the most robust solution for Engineers:

Hydraulics: infrastructure networks, culverts, dams, solvers
Hydrology: water budget in catchments and flood flows
Environmental: roadway pollution, mobile emissions model, landfill gas, construction noise
Financial: estimation of engineer's fees for projects and services (in Greek only)

Hackman 9.2 is an advanced hex editor, disassembler and template editor. It comes with cryptography capabilities, decoding with algorithms and a fully-featured editor. You can edit any file, disk drive, RAM process, ZIP drive and more.

Hackman Suite - TechnoLogismiki
 
With Hackman Hex Editor you can edit any type of file in your hard disk, even your hard disk itself or a process in memory. Data are presented in 6 different ways (modes): ASCII, Hex, Binary, Octal, Decimal and Custom mode. The editor comes with unlimited undo/redo with undo/redo lists, full clipboard control: cut, copy, paste, paste special, clear clipboard, highly sophisticated find and replace, unlimited watches and bookmarks and numerous conversion modes, including Java, C++, VB, ASCII, text and more.

Hackman Suite - TechnoLogismiki

You can always use the Patch Maker, the MS-DOS Executable Maker, Merger/Splitter and Checksums (CRC16/32, MD5, SHA1 and more) to check and / or manipulate files. Embedded cryptographic capabilities (Skipjack, NSA, RCA algorithms), support for macros, inline command bar, numerous plugins and external tools, configurable toolbar, shortcuts and menus, multilingual interface and online help consist a part of the features list.

Monday, July 11, 2011

See a 3D View of your Eagle Cad Layout

With Eagle3D it is possible to generate a 3D View from your Board Layout. This will help you iron out mechanical clashes, thermal conflicts. Serviceability and Accessibility issues too.

See a 3D View of your Eagle Cad Layout

On Panel PCB's Like front/back panels. Usability errors may become visible in this simulation. Connector and wiring layout can be better judged on 3D and strain relief and cable management can be planned in power electronics designs.

In sensitive analog circuits; thermal, leakage or guard rings can be inspected. In RF circuits; the shielding, tracks and components can be studied for unwanted coupling, crosstalk or leakage. Finally safety factors also can be judged keeping the enclosure 3d or cabinet in hand.

Now we have low cost 3D CNC prototype makers. Rapid prototyping - additive or laser erosion. You can probably use this as a input for such a machine. Then you can fix it in a cabinet and complete the Mechanical Simulation. This will save wastage of parts, time and pcb's during prototyping.

Arthernet - AVR Ethernet Modul
A 3D Simulated View from Guido Fischer. More information about this board in German at Arthernet - AVR Ethernet Modul

Rigel - Ebedded Controllers and Software

Manufactures embedded controllers for the 8051, ARM7, C166/C167, and ST10 processors. They supply the hardware, software, and textbooks for embedded Ethernet, industrial control, education, and research.

Rigel - Ebedded Controllers and Software

Provides professional hardware design, OEM manufacturing services, and industrial software development for the 8051, and ARM7.

Seen below is the R-420SP a powerful low-cost programmer and chip carrier for the
DS89C440/DS89C450 microcontroller in the 44-pin PLCC package.

Seen below is the R-420SP

Reads51 - integrated applications software development system, which runs on an IBM PC or compatible host. Reads51 contains a C compiler, relative assembler, linker/locator, editor, chip simulator, assembly language debugger, and host-to-board communications in a user-friendly, menu-driven environment.
Rigel Corporation - 4300 NW 23rd Ave, Gainesville, FL 32606

Wednesday, July 06, 2011

From Wi-Fi and WIMAX - Wireless Ethernet

WIMAX Forum - Broadband Wireless Web

"With mobile WiMAX, you'll have on-the-go broadband Internet and access to data-intensive applications, like online multimedia, video downloads, mobile TV, and streaming music."
From Wi-Fi and WIMAX - Wireless Ethernet

"The ultimate goal of the WiMAX Forum is to promote and accelerate the introduction of cost-effective broadband wireless access services into the marketplace..."

Mini-Circuits RF-IF Designers Guide -  A global leader in RF, IF, and microwave signal processing products.

IEEE 802.16 WirelessMAN The IEEE 802.16 Working Group on Broadband Wireless Access Standards

The IEEE 802.16 Working Group on Broadband Wireless Access Standards develops standards and recommended practices to support the development and deployment of broadband Wireless Metropolitan Area Networks. IEEE 802.16 is a unit of the IEEE 802 LAN/MAN Standards Committee.

Wireless LAN Association

Non-profit consortium of wireless networking vendors established to educate the market place about wireless networking products, trends and applications.
  • CWNP Learning Center
  • Wireless LAN in your home
  • Small businesses - Wireless networks

GSM World - Online face of GSM Association

GSM (Global System for Mobile Communications: originally from Groupe Spécial Mobile) is the most popular standard for mobile telephone systems in the world. The GSM Association, its promoting industry trade organization of mobile phone carriers and manufacturers, estimates that 80% of the global mobile market uses the standard.[1] GSM is used by over 3 billion people across more than 212 countries and territories. - GSM Wiki

GSM World - Online face of GSM Association - "The GSMA represents the interests of the worldwide mobile communications industry"

GSM Technology for Mobile Communications

EDGE - GSM Evolution (EDGE) technology provides up to three times the data capacity of GPRS

HSPA - The set of technologies that defines the migration path for 3G/WCDMA operators worldwide

GSM - An open, digital cellular technology used for transmitting mobile voice and data services

GPRS - A very widely deployed wireless data service, available now with most GSM networks

Monday, July 04, 2011

Fieldbus Foundation - Device Data Networks

In late 1994, the path of fieldbus took a new, promising direction. Two parallel supplier consortiums-the InterOperable Systems Project (ISP) and WorldFIP North America-merged to form the Fieldbus Foundation.

Fieldbus Foundation - Device Data Networks

'This advanced digital communication solution was designed from the ground-up to support mission-critical control applications where the proper transfer and handling of data is essential. Foundation technology was created to replace incompatible networks and systems with an open, fully integrated architecture for information integration and distributed, real-time control across the enterprise."

High Speed Ethernet HSE - Fieldbus

High Speed Ethernet (HSE) is ideally suited for use as a control backbone. Running at 100 Mbit/s, the technology is designed for device, subsystem and enterprise integration.

Foundation technology is the world's leading digital protocol for process automation.Industrial network communication system for real-time distributed control. In the Technical Reference area you will find information on Design, installation and operation of Foundation-based plant automation systems....

Foundation Fieldbus H1 uses twisted pair or fiber media to link devices and the controller. Upto 32 Nodes on one port/point.

"Fieldbus is an all digital, two-way multi-drop communications link among intelligent smart field devices and automation systems. FOUNDATION Fieldbus is the Local Area Network (LAN) for instruments used in process automation with built-in capability to distribute the control application across the network."

Here is a Fieldbus Device - Temperature Head Transmitter
Endress + Hauser - TMT85
Endress + Hauser - TMT85 - The iTEMP® TMT85 is a head transmitter for assembly in a terminal head DIN form B with 2 sensor inputs for resistance thermometers in 2-wire, 3-wire or 4-wire connection, thermocouples, voltage and resistance transmitters.

Hamburg Design System - Hades Java

This is a framework for interactive simulation on OO Java. Consists of a graphical editor, the discrete-event based simulation engine(s), libraries of simulation components, a design and library browser, and tools like waveform viewer and scripting shell..

Hamburg Design System - Hades Java

Hamburg Design System - Hades Java

It is a tool for teaching basic digital systems design, and for research on system-simulation and hardware/software-cosimulation. All simulation models, signal types, and the simulation kernels can be subclassed, so that Hades can be used for other applications as well, not limited to digital electronics.

Hades applet collection.

"The current version of the Hades editor also includes a runtime flag to switch to view-mode: while all of the simulation functions and the option to change component parameters remain active, the editor disables all commands that change the circuit structure. Therefore, view-mode is ideal to let the user play with pre-defined circuits."

Monday, June 06, 2011

Exar Corporation - Specialized Semiconductors

Exar Corporation - Specialized Semiconductors

Exar Corporation based in Fremont, CA. designs, develops and markets high-performance, analog and mixed-signal silicon solutions for a variety of markets including networking, communications, and storage.

Other Areas are
  • Power solutions, power and system architecture, LED-Lighting.
  • Networking, UART and serial protocol transceiver solutions, Storage. 

Exar - Communications Semiconductors

Semiconductors and application software - circuit and packet services over PDH, SDH and OTN transport networks.

T/E/J, SDH/SONET and OTN product portfolio. Carrier Ethernet and OTN System-on-Chip solutions include carrier proven DeviceManager and ServiceManager applications software products.

PowerArchitect

PowerArchitect - Exar

Modify voltage, current and other parameters to create complex sequencing schemes monitor and configure supplies in real-time.

Tahoe RF Semiconductor - Analog RFIC chips

Designs, Develops and supplies customer-specific Analog RFIC chips and subsystems on a single chip.

Tahoe RF Semiconductor - Analog RFIC chips
 
They specialize in Extremely low power designs techniques, High performance like 12 GHz, Radiation Hardened and full RTL digital design flow. These chips are used to design Products like GPS Receivers, Cellular and Wi-Fi Transceivers, Ultra-Low Power Transceivers and Satellite Communication ICs to name a few.

TRFS-202 Receiver VCO
 
TRFS-202 WCDMA Rx VCO is a fully integrated voltage controlled oscillator operating at a frequency of 4.28GHz for WCDMA receiver applications. The differential architecture of the oscillator, along with local bias generation, improves the rejection of common mode interference and provides noise immunity.
TRFS-202 Receiver VCO2
They also provide Silicon Proven IP Blocks for your custom design. Some of them are ..
  • Integer-N and Frac-N Frequency Synthesizers
  • Switch-cap filters, gm-C filters
  • Data converters A/D and D/A
TRFS70001 1.5MHz Buck Voltage Regulator Tahoe RF

Buck Voltage Regulator Tahoe RF

The TRFS70001 is a synchronous step down voltage regulator designed for applications where battery life time or lowest heat dissipation are essential. While this IP block can be used standalone, it has been developed such that it can be integrated with other circuitry in an RFIC.

Tahoe RF Semiconductor Inc
12834 Earhart Avenue, Auburn, CA 95602-9027, United States.

Sunday, June 05, 2011

Products for portable ECG designs - Analog

"ADI microcontroller and integrated amplifier technologies support ultra low power, small size, and AAMI-EC13 performance level requirements for portable ECG designs."

AD8235: 40µA Micropower Instrumentation Amplifier in WLCSP Package

The AD8235 is the industry's smallest, lowest power instrumentation amplifier. It has rail to rail inputs and outputs and can operate on voltages as low as 1.8V.

AD8235: 40µA Micropower Instrumentation Amplifier in WLCSP Package

Another device of interest - 128 Channel, 24-bit Current-to-Digital ADC for High Slice Count CT Scanners. The ADAS1128 lowers CT system cost and enables enhanced imaging using the industry's highest level of channel integration and speed.

ADAS1000: Low Power, 5-Electrode ECG AFE

Some Features

  • Biopotential signals in; digitized signals out
  • 5 acquisition (ECG) channels + 1 driven lead
  • Parallel ICs for up to 10+ Electrode measurements
  • Internal Pace Detection Algorithm on 3 leads

From - Analog Devices Healthcare

Saturday, June 04, 2011

Equipment Design and Development Tools - LabSmith

"LabSmith was founded in 1995 by Dr. Eric Cummings, whose work at Caltech and other institutions exposed the need for a new approach to research equipment design."

Equipment Design and Development Tools - LabSmith 

"LabSmith has introduced entirely new classes of equipment, such as high voltage sequencers, real-time recording fluorescence microscopes, uProcess Aautomation products, including syringe pumps and valves, and breadboard-based microfluidics components."

Microfluidics with the LabSmith LabPackage-Making a Microfluidic Injection on a Chip

Microfluidics with the LabSmith

"Breadboard-based connections and components for capillary and tubing-based microfluidic setups."

"From snap-together microfluidics to affordable, feature-laden microscopes, LabSmith has earned its reputation for innovative solutions to research problems."

LabSmith,
6111 Southfront Road, Suite E· Livermore, CA 94551

Wednesday, June 01, 2011

LM723 Power Electronics Workhorse

This is another versatile and flexible chip. I could design current sources, voltage to current transmitters, level translation and many more. You can think of applications beyond the Power Electronics Scope with this.

Programmable voltage regulator, DIP-14 and SO-14 packages.

LM723 Power Electronics Workhorse

"The circuit provides internal current limiting. When the output current exceeds 150mA an external NPN or PNP pass element may be used. Provisions are made for adjustable current limiting and remote shutdown."

Some Specs -

Input voltage up to 40V, Output voltage adjustable from 2 to 37V, Output current to 150mA without external pass transistor and Adjustable current limiting.

Also see at ST - LM723 High precision voltage regulator

Monday, May 16, 2011

IXYS Semiconductors - Power and RF

Develops and Manufactures products to improve power conversion efficiency. Integrated circuits and RF power devices. ASICs, Pulsed Power Systems and Laser Diode Drivers also in their product portfolio. RF

IXYS Semiconductors - Power and RF

They have HVIC chips for medical, telecommunication and power management applications including off AC line LED drivers. They also Zilog family of MCU's after Zilog Corporation became an IXYS Company.

IXYS Semiconductors

They have under their Umbrella ...

MicroWave Technology, Inc. is a leading manufacturer of RF & Microwave Discrete Semiconductor Products.

Clare, Inc., A leader in the design and manufacture of solid state relays and high voltage integrated circuits. Shown on right is the IXDN609 a 9 Amp Low-Side Ultrafast MOSFET Driver.

Founded 1983, Corporate headquarters in Milpitas, California.

Address -1590 Buckeye Drive Milpitas, CA 95035-7418 United States.

Sunday, May 15, 2011

ShortLink - Design of Portable Wireless Systems

Product and System, design and development company. They offer design and engineering service in Silicon-ASIC design, Electronic product design and T&M products too.

ShortLink - Design of Portable Wireless Systems

They specialize in the field of low-power portable electronics and wireless systems.

ShortLink - Design of Portable Wireless Systems
ASIC design

Analog, digital ASIC design, Mixed Signal ASIC and RF-ASIC. The last two being areas of expertise. Ready-made IP blocks for analog, digital and RF applications are also available. They are a Fabless ASIC supplier.

Test and Measurement Service

Radio, EMC and environmental durability testing. Audio and acoustics, analysis and characterization of antennas. They offer radio testing up to 18 GHz.
Services Include
  • Radio and EMC testing
  • Assistance in CE marking
  • Antenna measurements
  • Environmental durability testing - temperature, salt, moisture and vibrations
  • Measurement and testing - audio and acoustics
Shortlink AB
Hamntorget 1, 2:nd floor. 652 26 Karlstad Sweden

RF Engineering Services - LCC

Wireless engineering company, Technical and RF Engineering services for large wireless operators. Technologies Capabilities include LTE, WiMAX, HSPA, CDMA, EDGE and GSM.

RF Engineering Services - LCC

Wireless voice and data, turn-key services to the telecommunications industry. The Wireless Institute is the educational and training wing for professionals and firms managing communication networks, they include manufacturers.

"The theoretical knowledge gained from our world class Wireless Institute plus the countless number of man years spent in the field enables us to offer services to all aspects of the radio and core network. Our engineers have field-proven design, planning and optimization experience in all wireless mobile, fixed and satellite technologies..."

TotalView is LCC's service delivery platform based on unique tools and comprehensive solutions.

LCC - 1934 Old Gallows Road, Suite 410, Vienna, VA 22182 - LCC Map

Mindspeed Technologies - Communications Semiconductors

They Design and Develop Communication devices which are used in both wireline and wireless network infrastructure. These Chips are used by Networks for voice and media communication. They help OEMs develop products like gateways, high-speed routers, switches, multiplexers, etc.

Comcerto family of ARM-based SoCs
Mindspeed Technologies - Communications Semiconductors
 
They have semiconductor solutions in VoIP, Ethernet, IP Processing, Fiber-Optic Components, Carrier Ethernet Products, SONET/SDH/PDH Components, xDSL Components.

Comcerto 2000 and Software Defined Networking
 
Processors for the next-generation of networks. Combining powerful dual-core ARM Cortex A9 processors with OPAL software defined networking acceleration and a powerful suite of peripherals.
"Through intelligent offloading, the Comcerto 2000 range supports wire rate Gigabit-per-second IPv6 NAT and firewall applications without utilizing the ARM Cortex processors keeping them fully available to run value-added applications from OEMs or service providers."

M02040 - 2.1 Gbps, 3.3 or 5V Post-Amplifier
 
Integrated high-gain limiting amplifier. Operates with a 3.3V or 3.3V/5V supply. Two analog RSSI outputs proportional to either the average or peak-to-peak input signal and a programmable signal-level detector allowing the user to set thresholds at which the logic outputs are enabled.
Some Features
  • 2 mV input sensitivity at 1.25 Gbps
  • PECL outputs, Low power (< 80 mW at 3.3V)
  • Average Receive power monitor output (RSSI AVG)
  • Peak-to-peak Receive power monitor output (RSSI PP)
  • On-chip DC offset cancellation circuit
Founded in 2003. Headquartered in Newport Beach, Calif.
4000 MacArthur Boulevard East Tower, Newport Beach, CA 92660, United States. - Mindspeed Map

Wednesday, May 11, 2011

CPI - Microwave and Power Technologies

Manufacturer of magnetrons, klystrons, gyrotrons, power amplifiers, TWTs and power grid tubes for microwave, broadcast and radar applications.

CPI - Microwave and Power Technologies

"In 1948, Russell H. Varian and Sigurd F. Varian, the historical founders of CPI's business, founded Varian Associates and introduced the klystron as its first commercial product." - History

CPI BMD designs and manufactures a broad range of RF and microwave products for radar, communications and scientific applications.

CPI Power Grid Devices

"Eimac designs and produces power tubes for broadcast, communications, radar, industrial heating, semiconductor processing, science and medical applications.."

Monday, May 09, 2011

JTIsoft from Johanson Technology

JTIsoft from Johanson Technology is comprised of two advanced design simulation software, MLCsoft and MLIsoft. It provides complete S-Parameter and SPICE modeling data on Johanson's line of RF multilayer ceramic capacitors and inductors over the frequency range of 1 MHz to 20 GHz.

JTIsoft Modeling Overview

 JTIsoft Modeling Overview

MLCsoft and MLIsoft provide highly detailed graphical plots of device performance data in two basic formats over a user specified frequency range. The chart displays are instantly updated as the user makes capacitance or frequency changes. Smith chart displays of both impedance and S11/S22 are available as point plots, line plots, and line-point plots.

JTI specializes in the design and manufacture of high quality ceramic components for RF/Wireless and Microwave applications.

Johanson Technology - RF Ceramic Components

Johanson Technology
4001 Calle Tecate, Camarillo, California 93012, USA.

AlphaLab - Test Instruments for EMI and RFI

Manufacturers of electromagnetic pollution detectors. Assists in determining the safe distance from any EMR source.

AlphaLab - Test Instruments for EMI and RFI

Products Include - DC Gaussmeters, Electromagnetic pollution meter (magnetic, electric, microwave fields). For Static Electricity Surface DC Voltmeters. Others are AC Electric Field Meter, RF Field Strength Meter and Natural Electromagnetic (EM) Meter.

DC Milligauss Meter 3 Axis - AlphaLab

DC Milligauss Meter 3 Axis - AlphaLab

An improvement on the flux gate magnetometer, the AlphaLab DC Milligauss Meter measures magnetic fields (technically "flux density") up to several times the strength of the Earth field. It has a resolution of 0.01 milligauss (1 nanotesla) and a range of +/-2000 milligauss (200 microteslas).

AlphaLab, Inc.
3005 South 300 West Salt Lake City, Utah 84115 USA

Thursday, April 14, 2011

Guerra Technologies - RF ASIC and Modules

Designs and Manufactures reliable RF and other high frequency designs from DC to 38 GHz. The types of Products Encompass High yield ASICs, RF systems and subassemblies and Mixed/RF ASIC, covers the entire product design cycle.

Guerra Technologies - RF ASIC and Modules

1575 MHz single stage low noise amplifier LNA 1575-1

LNA 1575-1 a new amplifier has 18 dB gain, a noise figure of 0.5 dB, and a 3:1 VSWR. The amplifier can handle RF input power of up to +12 dBm. Reverse isolation is > 30 dB. The amplifier operates over a range of 3.3 to 12 VDC at 19 mA.

1575 MHz single stage low noise amplifier LNA 1575-1

Guerra Technologies, Inc. 1610 Dell Avenue, Suite Q Campbell, CA 95008

Wednesday, April 13, 2011

Pronine Electronics Design Consulting

They offer a comprehensive electronic design service. They specialize in analog, digital, audio, video, RF and mixed signal circuits.

Pronine Electronics Design Consulting

They also undertake electronic circuit and printed circuit board design. Some products developed are like .. test instruments, specialized research equipment, amplifiers, PLL synthesizers and power supplies.

Pronine Electronics Design Consulting

Microprocessor System Development, RF-Wireless and Networks are in the list of their Capabilities.

Programmable attenuators - Frequency range: 1MHz-1GHz. Programmable filters - Low pass, Butterworth, Bessel.

These services include prototype PCB fabrication and assembly. The service also may include component procurement too. They also help making your Engineering Documents Electronically Accessible.

Pronine Electronics Design
3228 Savary Ave, Coquitlam, BC V3E 1M3, Canada