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Thursday, December 04, 2008

Engineering Electronics Shop Page

Engineering Electronics Shop Page

The Shop Pages are intended to provide students and staff with access to Internet E.E.-related resources, to explain in detail the functioning of our labs and Shop, and to provide information of particular interest to any E.E. student designing electronics projects. Web readers outside of the University of Nebraska - Lincoln campus should know that some of the services mentioned on these pages are applicable to UN-L only.

Tuesday, December 02, 2008 - gEDA suite - gEDA suite This website is a repository for symbols, footprints and documentation that are useful to anyone using the GPL schematic creation program gschem or the GPL pcb layout program PCB. The misson of is to increase the usage of the gEDA suite of tools by distributing symbols and footprints for these programs.

Please note that this site is undergoing transition (as of Feb 2006 at least) so please bear with us while we get our act together. Meanwhile, here are some links to relevent information:

gEDA - full GPL'd suite of Electronic Design Automation tools. These tools are used for electrical circuit design, schematic capture, simulation, prototyping, and production.
Open Collector - gedasymbols - PCB - Delorie Software

Open Programmer PIC and Atmel

An open source USB programmer for PIC micros, I2C EEPROMs, some ATMEL micros, generic I2C/SPI devices and (soon) other devices.

Open Programmer PIC and Atmel

  • Completely free and Open Source (including firmware)
  • Programs PIC10-12-16-18, 24xxxx I2C EEPROMs, some ATMEL micros, communicates with generic I2C & SPI devices (see supported devices)
  • USB interface, HID class (same as keyboards, mice, etc.)
  • Self powered
  • Doesn't need drivers
  • Built from easy to find components (estimated cost ~10€)
  • Hardware generated timings for maximum speed and reliability (writes a 18F2550 in 15s, 8s under Linux)
  • Doesn't saturate your CPU and doesn't suffer when other programs are running
  • Open source control programs for Linux and Windows
USBPicprog, another open source programmer

Monday, December 01, 2008

CompuPhase articles and Application notes

CompuPhase Services include contract programming of applications and embedded systems, and also the design and production of custom electronics.

CompuPhase Projects and Programmable MP3-player

Domains of Expertise
  • Signal processing (audio & video) and compression
  • Edutainment, computer based training (CBT), multimedia and kiosk applications
  • Databases and the integration of databases with statistical computation
  • International software, multi-lingual or easily translatable software (internationalization)
  • Embedded applications
  • Special lighting projects, using fibre optics or high-power LEDs
On the right is a Programmable MP3-player for scale models, broadcast systems and special applications. High quality audio, based on a 24-bit D/A converter with 8× oversampling digital filter, low noise and low distortion.

CompuPhase articles and Application notes

Termite Terminal - RS232 Interfacing - CompuPhase

Termite is an easy to use and easy to configure RS232 terminal. It uses an interface similar to that of "messenger" or "chat" programs, with a large window that contains all received data and an edit line for typing in strings to transmit. This terminal ought to help serial port SBC development.

Plug-in interface for pre-processing or alternative views of the data, logging received data to a file, adding a toolbar to Termite, and other functionality that you may think of.

It can also do ..
  • A history of commands that you typed, with auto-completion.
  • Support for non-standard Baud rates (MIDI, DMX512).
  • Data can be forwarded between two RS232 ports.

Tuesday, November 04, 2008

JEDEC - Solid-state Standards

JEDEC - Solid-state Standards

JEDEC is the leading developer of standards for the solid-state industry. The publications and standards that they generate are accepted throughout the world. All JEDEC standards are available online, at no charge.

6th International System-on-Chip (SoC)

Monday, November 03, 2008

IEEE Microwave Theory and Techniques Society

"The IEEE Microwave Theory and Techniques Society - MTT-S is a transnational society with more than 9,000 members and 80 chapters worldwide. Our society promotes the advancement of microwave theory and its applications, including RF, microwave, millimeter-wave, and terahertz technologies."

"The activities sponsored by the MTT-S include a broad spectrum of conferences, workshops, tutorials, technical committees, chapter meetings, publications and professional education programs."

IEEE Microwave Theory and Techniques Society

IEEE - The IEEE, a non-profit organization, is the world's leading professional association for the advancement of technology.

The MTT-S’ field of interest is "microwave theory, techniques and applications" of RF, microwave, guided wave, and wireless technologies, as they relate to components, devices, circuits, transmission lines, and systems involving the generation, modulation, demodulation, control, transmission, detection and effects of electromagnetic signals. It shall include scientific, technical, and industrial activities.

National Electronics Museum

From telegraph and radio to radar and satellites, the National Electronics Museum offers visitors access to the electronic marvels that have helped to shape our country and our world.

Thursday, October 16, 2008

GE Industrial Systems - Design Resources

Design Resources
Information for electrical engineers when designing or specifying GE equipment.

Publication Library
Technical documentation, time current curves, CSI Specifications.

GE Industrial Systems

Programs available that provide analytical tools, advanced power quality analysis, monitor energy consumption, and manage loads.

Wednesday, October 15, 2008

Spread Spectrum Scene Online

Spread Spectrum Scene Online

RF chips, white papers, FCC, a variety of specialty books on various wireless/ spread spectrum / RF areas, and a wide range of other information.

Spread Spectrum Scene Online is managed by Pegasus Technologies, Inc. A small design house located in East Tennessee. We do custom RF / wireless design work and also offer a variety of Rf modules that can be incorporated into your designs.

Tuesday, October 14, 2008

OpenEEG hardware - Amplifiers

OpenEEG hardware - Amplifiers
OpenEEG hardware - Amplifiers
Design documentation
Amplifier schematic [55kb] (aka analogue board; contains two amplifiers) and digital board schematic [48kb] as images.
Note -
I found the amplifier designs extremely good as a learning material. Medical instruments after development should undergo a approval process and have high product safety requirements. So above circuits to be used for study only, not for practical applications. When integrating, Medical professionals have to beta test it and after approval used for further tests.
A simulated electrical noise signal source for experimentation is good enough for Degree Projects.

Friday, September 12, 2008

Lammert Bies - Computer Interfacing

Information about computers and how to interface them to all kind of equipment. Both software and hardware help is available. - Lammert Bies

Lammert Bies - Computer Interfacing

  • RS-232 specs
  • RS-485 information
  • The serial UART
  • USB interface
  • Modbus interface
  • Unitronics RJ11

Simple null modem without handshaking

Simple null modem without handshaking

"only the data lines and signal ground are cross connected in the null modem communication cable. All other pins have no connection. An example of such a null modem cable without handshaking can be seen in the figure below."

Thursday, September 11, 2008 - Interface and Cable design

Providing detailed electronic design information regarding Interface, Computer, Cable, Processor and Embedded Buses. - Leroy Davis

Buses used on Personal Computers, Computers & Peripherals, Standards, Wireless, Logic Design. - Interface and Cable design

    The site is geared toward Engineers who develop or design equipment. There are 3 main sections; OEM Equipment / Components listings, Computer buses, and engineering design data.

    In this site you will find a wealth of knowledge regarding Analog and Digital Integrated Circuits; Memory, Processor and Programmable Logic IC's, Bus Interface IC's,  Passive, and Mechanical components; Resistors, Capacitors, Inductors and Sensors, EDA Software vendors, - Interface and Cable design

    PCI104 Bus

    PCI-104 is the newest variation of the standard. PCI-104 removes the old PC XT / AT bus from the specification leaving only the PCI bus. The PCI bus connector is a 4x30, 2mm stack-through connector. PCI-104 cards may still reside in a stack with either PC/104 cards or PC/104-Plus cards.

    Wednesday, September 10, 2008

    Instrumentation Design Office

    Instrumentation Design Office

    Instrumentation Design Office (IDO) is software for creating and managing industrial instrumentation and control systems design data and documentation including instrument datasheets, loop diagrams, termination diagrams, hookup drawings, I/O lists, instrument index, cable schedules, Bill of Materials and other reports.

    IDO consists of an integrated suite of software applications using advanced graphical user interfaces to a shared project or plant relational database. The user interface is intuitive and includes online help.

    Much of the data is created through automated functions & design rules, picklists and use of catalog data and data importation. IDO essentially automates production of design documentation from the database ensuring superior design integrity and significant reduction in manual data entry.

    Friday, September 05, 2008

    Eng-Tips Forums - Electrical and Electronic

    These pages will probably help you do a design review of your new circuit or even answer a doubt in your product design. Use the Search.

    Eng-Tips Forums - Electrical and Electronic

    Eng-Tips Forums - Electrical and Electronic

    • Electric power engineering
    • Electric motors & motor controls engineering
    • Electrical/Electronic engineering other topics
    • Circuit Design
    • Programmable Logic Controllers (PLC)
    • Communication & Signal Processing engineering
    • Antenna & Propagation engineering

    Wednesday, August 13, 2008

    Compliance Engineering ESD EMC Safety is the world's foremost on-line resource for international developments in regulatory compliance for electronics engineers.

    Compliance Engineering
    Compliance Engineering ESD EMC Safety
 serves as an on-line extension of Compliance Engineering magazine, providing the same in-depth print resources readers have come to expect from the print publication. These include all current and archived articles, the annual reference guide, a current events calendar, and the suppliers directory.
    • Compliance Engineering Reference Guide
    • CE-Mag Discussion Forum
    • Mr. Static

    Saturday, August 09, 2008

    Beige Bag Software User Resources

    Beige Bag Software User Resources Beige Bag Software User Resources
    • B² Spiceand RIAA Preamps By John Broskie
    • DC Uninterruped Power Supply by Mike Rooke
    • Stepper Motor Circuit by Mike Rooke
    • Polyphase AC source - by Harvey Morehouse
    • Simple Nonlinear Inductor Modeling by Harvey Morehouse
    • Simple Mechanical DC Relays by Harvey Morehouse
    • SMPS modeling by Harvey Morehouse
    B2 Spice v5

    The latest version of the popular and powerful mixed mode simulator builds upon B2 Spice A/D v4's powerful capabilities to reach new standards in ease-of-use, power, and capabilities.

    B2 Spice A/D v4

    A fully featured mixed mode simulator that builds upon B2 Spice A/D 2000's ease of use and adds its own powerful and innovative features to make it the simulator of choice for power SPICE users.

    New features include a parts chooser window, workspace editor, importing and exporting to Eagle PCB as well as other PCB programs, and animated schematics.

    Friday, August 08, 2008

    National Instruments - Test and Measurement

    Use Computers and the Web, to create custom, software configurable and Modular T&M for test automation, research and industrial process control. Products include LabVIEW, Multisim and Modular Plug-in like hardware that can be interconnected and interfaced to Computing system.

    National Instruments - Test and Measurement

    LabVIEW, Data Acquisition, Modular Instruments, PXI, Programmable Automation Controllers. VXI and VME, PXI and CompactPCI, LXI and LAN.

    National Instruments - Test and Measurement

    NI 9792 WSN Programmable Gateway

    RT Controller with Integrated Gateway for WSN—The WSN‑9792 is a programmable RT controller with an integrated gateway for NI wireless sensor network (WSN) devices.

    You can mount the NI 9792 device on a panel, a 35 mm DIN rail, in an enclosure, or on a desktop. Use the DIN-Rail mounting method if you already have a DIN rail configuration or if you need to be able to quickly remove the device.

    The NI 9792 has an RS-232 serial port to which you can connect devices such as displays or input devices. Use the Serial VIs to read from and write to the serial port. For more information about the Serial VIs, refer to the LabVIEW Help.

    The NI 9792 supports common USB mass storage devices such as USB Flash drives and USB-to-IDE adapters formatted with FAT16 and FAT32 file systems.

    The NI WSN system is built on an IEEE 802.15.4 wireless mesh network. The 802.15.4 radio in each NI WSN device provides for low-power communication of measurement data across a large network of devices.

    Wednesday, August 06, 2008

    Robotics Institute - Publications

    Robotics Institute: Publications

    This site includes abstracts and bibliographic references for most publications by RI researchers. Additionally, the full text of many of the publications is downloadable in PDF or Postscript format.

    The Robotics Institute - Carnegie Mellon University

    Thursday, July 17, 2008

    Brannon Electronics Inc - Design Services

    Professional Services in Analog and Digital Circuit Design, PC Board Layout, and Embedded Controller hardware/software.

    Brannon Electronics Inc - Design Services
    • Cross Conduction Inhibit in Switching Power Supplies
    • Push-Pull DC to DC Converter
    • Self-Oscillating DC to DC Converter
    • Status Inputs using Serial Link
    • 4 Phase Clock Generator
    • I2C Isolation Barrier
    Embedded Processor/Controller Design

    New Product Design, Firmware Coding and Modification, System tradeoffs and improvements, C and assembly programming.

    More ... Electronic Design Tips - written by Tom Brannon.

    Serial Status Input Circuit

    Serial Status Input Circuit

    When collecting status input data, a few points rapidly consume many connections requiring distribution panels, multiplex logic and expensive parallel IO devices. This simple serial circuit allows you to daisy chain status inputs up to 16 inputs using only four wires. I chose this circuit for a Subsea System due to the high cost of underwater cabling and connectors.

    Wednesday, July 16, 2008

    uCpros - MicroController Pros

    uCpros - MicroController Pros

    Embedded System Design, Microcontroller Development Tools, Management & Marketing, Training, Technical Writing and Translation Services

    MiicroController Pros develops and conducts corporate training courses. We offer customization of training programs to meet your specific microcontroller software and hardware development training needs.

    Technical Writing
    MicroController Pros is your technical writing resource. We perform contract technical writing services, like: report writing; specification writing; and technical writing of manuals, datasheets, application notes and product articles.

    CSE - Electronic Design Consulting Services

    Electronic System Problem Solving for High-Tech and New Product Research & Development. The design products using select leading-edge devices and technology to assure that you get the maximum benefits available today.

    CSE - Electronic Design Consulting Services

    Concept Exploration, Schematic Capture, Device Programming, Board Layout, Circuit Board Production, Product Development. They also undertake Device porting, Prototype testing and MTBF Calculations.

    CSE - Electronic Design Consulting Services

    Support for Electromechanical Design and Mechanical Tools. They help with Boxes and housings, CNC machining, Plastic injection molding, Stereolithography prototypes and CAD based mechanical drafting and drawing.

    CSE provides tried and true electronic consulting services for a broad range of electronic circuit types and technologies.
    • Digital electronics, including high-speed processor based systems,....
    • Analog electronics, including video, RF, specialty transducer interfacing,....
    • Various digital communications protocols and hardware standard architectures,...
    CSE - Electronic Consulting Services - Florida
    2664 Sunvale Ct., Cape Coral, FL 33991 - USA

    Indesign - Electronic Product Development

    Indesign - Electronic Product Development

    Indesign, LLC. Indianapolis. - Engineering Services - Electronic Product Design Engineering.

    Engineering Design of Electronic Products and Systems. Engineering Design Center, Company formed in 1996 by a group of Bell Labs engineers. Electrical, Software, Mechanical, Human Factors, Testing.

    Areas- Consumer, Medical, Computer, Military, Industrial, Automotive, etc.

    John Shaw Process Control Solutions

    John Shaw Process Control Solutions

    Consulting and contract engineering services for manufacturers and users of process control equipment and systems.

    Netrino - Embedded Experts

    Netrino - Embedded Experts

    Netrino's specialty is the design and development of products with computers embedded inside them. Each member of our team of senior engineers has specific skills and expertise such as mechanical engineering, electrical engineering, and/or embedded software development.

    Embedded Systems Glossary. The glossary is sorted alphabetically, with one page for each letter and another for terms that start with numbers or symbols. The maintainer of the glossary is a founder of Netrino and co-author of the book Embedded Systems Dictionary. - Michael Barr

    The Articles section of our library contains most of our published magazine and journal articles, conference papers, and many other short technical pieces relevant to the practice of real-time embedded systems design.

    Tuesday, July 15, 2008

    Theta Electronic Engineering Services

    Theta Electronic Engineering Services
    "Theta Engineering was founded in 1993 to provide economical engineering services for companies needing to augment their technical resources. Theta Engineering provides a full range of electronic design and software/firmware development services aimed at getting your product to market."
    Products developed by Theta Engineering
    Robotic Cell Phone Programmer

    Designed and programmed custom stepper motor driver boards for a robotic cellular phone programmer. This project involved inter-processor communication between 8 Microchip PIC-family microcontrollers supporting simultaneous motion of up to 7 axes.
    Robotic Arm Test System Project
    Designed and built 4 different automated test fixtures for Beckman Instruments (now Beckman Coulter). The unit pictured uses a combination of pneumatics and electronics for measuring the force and accuracy of a robotic arm which is itself a component in one of Beckman's medical lab instruments.

    Wednesday, June 25, 2008

    fpga4fun - Electronic Adventures with FPGA

    fpga4fun - Electronic Adventures with FPGA
    "This site reflects my experience and my opinions on FPGA technology. It is meant to be informative and useful to anybody interested in learning FPGA technology."

    - Jean P. Nicolle
    • HDL tutorials
    • SMD technology
    • Crystals and oscillators
    • How FPGAs work
    • Digital oscilloscope

    Synopsys - EDA Software Services

    Synopsys - EDA Software Services

    "Synopsys, Inc. is a world leader in delivering semiconductor design software, intellectual property (IP), design for manufacturing (DFM) solutions and professional services that companies use to design systems-on-chips (SoCs) and electronic systems."

    "The company was founded in 1986 by Dr. Aart J. de Geus and a team of engineers from General Electric's Microelectronics Cente...."

    Synopsys Virtualizer Development Kit (VDK) for evaluation and education

    Software as a Service. SaaS

    "It includes a virtualized Ethernet Controller, UARTs, keyboard and mouse interfaces, and a frame-buffer console that allows the user to interact with the platform, just like you would with a real hardware board."

    Synopsys Virtualizer Development Kit

    Synopsys Corporate Headquarters
    700 East Middlefield Road, Mountain View, CA 94043 USA

    Tuesday, June 24, 2008 - Electronic Design Automation - Electronic Design Automation

    Dedicated to the support, open exchange and dissemination of in-development standards from EDA Industry Working Groups. The Electronic Design Automation (EDA) and Electronic Computer-Aided Design (ECAD) one-stop resource on the WWW!

    Mentor Graphics - Technical Publications

    Mentor Graphics is a technology leader in electronic design automation (EDA), providing software and hardware design solutions that enable companies to develop better electronic products faster and more cost-effectively.

    The company offers innovative products and solutions that help engineers overcome the design challenges they face in the increasingly complex worlds of board and chip design.

    EZwave can analyze time or frequency domain waveform of any type: analog, digital, eye diagram, smith chart, polar or complex chart, and histogram. "

    Mentor Graphics - EDA Technology

    "The EZwave Joint Waveform DataBase (JWDB) is a high-performance waveform database for manipulating huge waveform databases from leading simulators, loading gigabytes of data in seconds.

     LP Viewer

    LP Viewer

    "View Physical Component and Land Pattern superimposed for visual accuracy. You can turn layers on/off, print datasheets, see component dimensions, land pattern dimensions, calculator setting, global settings, Toe, Heel and Side statistical data."

    Saturday, May 10, 2008

    Transtronics Automation - Industrial Control

    Transtronics Automation - Industrial Control

    Industrial control automation equipment. PC test equipment, PLC battery backup, Current sensing, Lots of useful information.

    • Capacitors and ESR
    • Pressure Transducer Primer
    • Thermostat signals and wiring
    • Dead-band or Hysteresis
    • Intro to ladder logic

    Friday, May 09, 2008

    Rohde and Schwarz - Application Notes

    Rohde & Schwarz is a leading supplier of solutions in the fields of test and measurement, broadcasting, radiomonitoring and radiolocation.

    Test and measurement equipment for mobile radios and radiocommunications.

    Dr. Lothar Rohde and Dr. Hermann Schwarz set up shop under the name "Physikalisch-technisches Entwicklungslabor Dr. L. Rohde und Dr. H. Schwarz" (PTE)......... 75 Years Rohde & Schwarz

    Thursday, May 08, 2008

    Tektronix Test and Measurement Equipment

    Tektronix electronic test, measurement and monitoring equipment. Products include oscilloscopes, logic analyzers, fiber optic instruments, video and mobile protocol test equipment. It is also called Tek.

    Tektronix Test and Measurement Equipment
    Tektronix electronic test, measurement and monitoring equipment. Tektronix, Inc. is a United States corporation best known for its test and measurement equipment such as oscilloscopes, logic analyzers, and video and mobile test protocol equipment. Tek is the nickname by which Tektronix is known to its employees, customers, and neighbors.

    Oscilloscopes are indispensable tools for anyone designing, manufacturing or repairing electronic equipment. In today's fast-paced world, engineers need the best tools available to solve their measurement challenges quickly and accurately.

    Tektronix Test and Measurement Equipment

    MSO/DPO Series Mixed Signal Oscilloscope Virtual Product Demo
    The company traces its roots to the electronics revolution that immediately followed World War II. The company's founders C. Howard Vollum and Melvin J. "Jack" Murdock invented the world's first triggered oscilloscope in 1946, a significant technological breakthrough.

    XYZs of Oscilloscopes - Tektronix
    "Oscilloscopes are indispensable tools for anyone designing, manufacturing or repairing electronic equipment. In today's fast-paced world, engineers need the best tools available to solve their measurement challenges quickly and accurately. "

    Tektronix Oscilloscopes Museum
    This site contains photos, specs, material and stories about tube built Tektronix oscilloscopes up to the late 60´s. The reasons of outstanding quality and inspired engineering of these classic scopes formed the basis of the worldwide reputation of Tektronix.

    Wednesday, May 07, 2008

    Keysight Technologies - Test and Measurement

    "From a small garage in Palo Alto, California, to employees around the world serving customers in 110 countries......."  Changes that happened --- hp >> agilent >> Keysight Technologies

    Please Note - Just like HP who started as a T&M Equipment firm, hived off the founding Niche as Agilent, Now Keysight holds that root Niche of T&M that companies like Fluke, Tek and Rohde & Schwarz belong.

    The company founded by William "Bill" Redington Hewlett and Dave Packard was know as Hewlett-Packard Company or HP. This was a Test and Measurement company. First popular product was a precision audio oscillator, the Model HP200A.

    Later Computer and Printer products divisions retained the brand and firm and Agilent was spun off for for the Test and Measurement and other non-computer product line.

    Keysight Technologies - Test and Measurement -

    Keysight Technologies - Test and Measurement

    34405A Digital Multimeter, 5½ digit

    "The 34405A comes with a broad range of measurement functions, including temperature and capacitance measurements. The 34405A features simultaneous reading of DC and AC measurements with its dual display and can take up to 19 readings/sec at 4½ digit resolution through the standard USB interface."

    History Breadcrumb -  HP --- Agilent --- Keysight

    Fluke Electronics - Industrial and Electrical TM

    Fluke Electronics - Industrial and Electrical TM
      Fluke 125 Industrial Network Test
    Fluke test tools offer solutions in predictive maintenance, electrical testing, biomedical test, thermography, and plant maintenance. Manufactures, distributes and services electronic test tools.

    Fluke 125 Industrial Network Test
    "Fluke 125 is the ScopeMeter of choice for the maintenance engineer who deals with industrial machinery and the industrial network connecting his machinery."

    Bandwidth - 40 MHz

    Sample Rate:
    • 2.5 GS/s repetitive sampling
    • 25 MS/s single shot sampling
    Fluke Application Notes

    Thursday, April 17, 2008

    International Rectifier - Power Semiconductors

    International Rectifier Corp. is a manufacturer of power semiconductors like MOSFET, IGBT, diodes and thyristors. They also provide the support devices which are analog and mixed-signal ICs, power systems and specialized components.

    International Rectifier - Power Semiconductors
    • Reference Designs
    • HEXFET Power MOSFETs
    • High Voltage Gate Drivers
    • IGBTs
    • Integrated Circuits
    IRAM Evaluation Kit with the IRMCF341 Motor Controller

    IRMCF341 Motor Controller
    The IRADK-S10UP60 is an Evaluation kit for the 6A and 10A IRAM Integrated Power Modules in SIP1 packages. These modules are optimized for electronic control of 3- phase motors in a variety of industrial and appliance applications in the 400W to 750W power range.

    International Rectifier
    101 N Sepulveda Blvd. El Segundo, CA 90245 USA

    Updated Aug 2013

    Wednesday, April 16, 2008

    Open Circuits - Open Source Electronics

    Open Circuits is a wiki for sharing open source electronics knowledge, schematics, board layouts, ports and parts libraries. This include open hardware Music Players, atomic microscopes, PC, PDA and mobile phones, and batteries. Please help us to build this resource by submitting your component descriptions, projects, techniques, and PCB footprints.

    Open Circuits - Open Source Electronics

    Some Projects that look Interesting are

    • Multi-purpose Embedded System
    • dsPIC33 Development Board
    • ADuC832 Development Board
    • N8VEM Home Brew Computing Project

    The Open Source Movement, typically covers Open Hardware, Open Firmware, and Open Software. The Open Firmware movement provides firmware which you may also know as soft-IP or FPGA coding see Open Cores for more details.

    Excellent examples of Open Hardware projects range from projects at OpenCircuits to Tiny Embedded Ethernet Devices and Advanced & Intelligent Camera Designs which provide solid-state camera and FPGA assisted hardware designs. A solid overview of projects can also be found at Open Innovation Projects.

    National Semiconductor - Texas Instrurments

    National Semiconductor was an American semiconductor manufacturer, that specialized in analog devices and subsystems, formerly headquartered in Santa Clara, California, USA.
    National Semiconductor Corporation Logo

    The products of National Semiconductor included power management circuits, display drivers, audio and operational amplifiers, communication interface products and data conversion solutions.

    National Semiconductor

    National's key markets included wireless handsets, displays and a variety of broad electronics markets, including medical, automotive, industrial, and test and measurement applications.

    On September 23, 2011, the company formally became part of Texas Instruments as the "Silicon Valley" division.

    Wiki of National Semiconductor

    An Exquisite Evaluation Board from National Semiconductor

    National Semiconductor

    SD356EVK Evaluation Kit Board for LMH0356 SDI Reclocker

    Wednesday, March 19, 2008

    ibrt Engineering Solutions

    ibrt Engineering Solutions

    Ing.Büro R.Tschaggelar offers a wide range of consulting services including

    • hardware and software - design and development
    • PC based or embedded
    • control and communication applications
    • simulations and measurements

    german pages - ein eher kleiner Teil auf deutsch

    Area - broad combined background from electronics, software engineering and physics, many complex problems become more solvable.

    Atlantic Quality Design Product Design Services

    Atlantic Quality Design Product Design Services

    Electronics development services to industry from offices in Virginia. From small gadgets to nationwide systems and factory floor instrumentation.

    Area- Embedded system design, that is, microprocessor based products. This includes all the real world analog, digital, and communications interfaces demanded of today's applications.

    Electronic product design and see the Interesting Publications too.

    Colorado Electronic Product Design

    Colorado Electronic Product Design

    Electronic Design

    o System design
    o Hardware
    o Software
    o Regulatory Approvals
    o Patent Documentation
    o Product Feasibility Study
    o Product Cost reduction
    o Transfer to Manufacturing

    Saturday, March 15, 2008

    PWM Control Circuit - TL494

    The TL494 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application.

    PWM Control Circuit - TL494
    • Complete PWM Power-Control Circuitry
    • Uncommitted Outputs for 200-mA Sink or Source Current
    • Output Control Selects Single-Ended or Push-Pull Operation
    • Internal Circuitry Prohibits Double Pulse at Either Output
    • Variable Dead Time Provides Control Over Total Range
    • Internal Regulator Provides a Stable 5-V Reference Supply With 5% Tolerance
    • Circuit Architecture Allows Easy Synchronization
    PWM Control Circuit - TL494

    The TL494 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits.

    TL494 Related Links

    Wednesday, February 13, 2008

    Avtech Applications Information

    Avtech Applications Information - and other useful information. LabView Drivers are available.
    • General Applications Information
    • What Coaxial Cable Should I Use?
    • How Can I Connect to an SHV Connector?
    • How Can I Extend the Amplitude Range to Low Levels?
    • How to Deliver a Fast 2 Amp Pulse to a Diode in a Probing Station
    Avtech Electrosystems - Nanosecond Waveform Generators
    Avtech manufactures over 500 standard models, ranging from basic general-purpose ±5V pulse generators, to exotic 500 Amp ultra-high-current laser diode drivers, and including ultra-high-speed pulse generators with rise times as low as 40 ps!

    Some Test Equipment they make
    • Frequency Dividers
    • Pulse Converters & Stretchers
    • Broadband bias tees
    • 1 to 10 Ohm Transmission Lines
    Avtech Electrosystems Ltd.
    PO Box 265, Ogdensburg, NY, 13669-0265 USA

    Tuesday, February 12, 2008

    Professor Mark Csele - Projects and Hobbies

    "I present, below, a collection of projects I have worked-on over the past few years. For over a decade, I had taught both embedded systems (microcontroller technology) and digital signal processing and practice what I preach...."

    Professor Mark Csele - Projects and Hobbies

    Nixie Thermostat - A heating and cooling thermostat employing technologies spanning fourty years from the unique Nixie tube display, circa 1960's, to a PIC 18F microcontroller, circa 2006.

    A High-Powered Power Backup Inverter

    A High-Powered Power Backup Inverter - The working prototype of the 2 KVA inverter is complete. Fed from an array of lead-acid cells totalling 600 Ah (at 12 Volts), it easily drives real-world loads such as single-phase motors. The inverter has been tested and found to operate at an efficiency of between 71% and 82% driving a variety of both inductive and resistive loads

    Peter H. Anderson - Embedded Processor Control

    PC Parallel Port, BasicX, BASIC Stamp, 68HC11, PIC, PICAXE, Data Acquisition and Control, Serial Control and Measurement. Many Microchip PIC Types , Use of a PC Printer Port for Control and Data Acquisition, 68HC11 Assembly Language ProgrammingParallel Port Interfacing with 2, 3 and 4 Wire Serial Devices.

    Peter H. Anderson - Embedded Processor Control

    This is a combination of LCD PIC, an assembled printed circuit board from, a 20X4 LCD with Blue / White backlight and interfacing connector

    Peter H Anderson - Embedded Processor Control

    This design provides an interface between a 9600 baud (or similar) serial line from a Microchip PIC, Arduino, Parallax Basic Stamp, NetMedia BX24, PICAXE and similar and a character LCD having an HD44780 interface.

    Serial LCD Kit with Variable LED Backlight

    The serial interface is TTL. That is, the idle state is a TTL logic one, or near +5 VDC. This is often termed non-inverting or true. This provides direct compatibility with the UART associated with a PIC, SerOut on a Basic Stamp and Com3 on a BX24. When interfacing with a PC or similar where the logic is inverted, an inverter is required. This might be as simple as a single 2N3904 NPN transistor.

    (this is a very useful computer interfacing resource for instrumentation - delabs)

    Douglas Beattie Engineering Consultant

    Douglas Beattie Engineering Consultant

    • 6502 / 65C02: Hardware / Software
    • eZ80F91 Reference Design
    • Parallel Port Interfacing (''roll-your-own'')
    • Z80 Forth page

    Tuesday, February 05, 2008

    Kilowatt Classroom Electrical Training

    The Industrial Electricians Notebook - Free online electrical books selection that features interesting and timely subjects: electrical theory, electrical reference information, electrical equipment and maintenance data, industrial electronics, and electrical safety regulations.

    Kilowatt Classroom Electrical Training

    "The harnessing of electrical power to lighten mankind’s work-load is only a little over a century old. During my own career, I have witnessed many changes in equipment, work methods, industry organization, and company philosophies."

    Kilowatt Classroom Electrical Training

    "All electrical systems are composed of the same basic equipment. Experience has shown it is most economical to generate power in large bulks, transmit it at very high voltage to minimize line losses, and transform it to low voltages for safe feeding to individual customers in small quantities."

    The Electrician’s Notebook - Kilowatt Classroom, LLC - Elwood V. Gilliland

    Sunday, February 03, 2008

    NASA Tech Briefs and Innovations

    NASA Tech Briefs and Innovations

    "The monthly magazine features exclusive reports of innovations developed by NASA and its industry partners/contractors that can be applied to develop new/improved products and solve engineering or manufacturing problems."

    • Electronics & Computers
    • Semiconductors & ICs
    • Materials
    • Manufacturing & Prototyping
    • Machinery & Automation
    • Test & Measurement