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.

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.

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

RF Circuit and PCB and Product Design

Practical RF PCB Design

One of the difficult areas in Electronic Product Design is RF sub-system or Communication Products. A Communications Product Developer has to get Specialized Support from experts in that field.

Plextek from UK is one such firm with such expertise and Experience. Their Technical Information Section gives an insight of important aspects in wireless communication design. Read these first, The Basics of RF System Design, Oscillator Design and Practical RF PCB Design.

Plextek Ltd - Technical Information

Printed Circuit Board Design Guide

This is an useful reference for PCB design and RF. Here it is about "PCB Mounted RF Connectors". Here you see a important rule "the first rule of connectors is that the best connector is no connector at all...". In RF the connectors and their placement needs extra care. At a frequency of 1 GHz, a short PCB track can become an Antenna !

Trompeter Electronics RF Connector Cable Assembly

From Wi-Fi and WIMAX - Wireless Ethernet

WIMAX Forum - Broadband Wireless Web

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

Related Resources

• Featured 3rd Party Research
• WiMAX RF ICs
• Mini-Circuits RF-IF Designers Guide
• WiMAX Solutions Overview - Fujitsu

Intel WiMAX Technology Mobile Broadband

"With wireless high-speed broadband connectivity for your PC, WiMAX-enabled laptops and mobile devices will provide you the freedom to connect to the Internet just as you do with your cell phone service"

• Intel WiMAX products for the mobile Internet
• IEEE 802.16 WirelessMAN
• Building the mobile Internet with WiMAX

"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."

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

Two Op-Amp Differential Amp

This is an ideal circuit for sensor amplification. Strain Bridge circuits too. It is an instrumentation amplifier, means precision. High input impedance to a differential input signal source. The gain can be set with external resistors to over 1000. CMRR trim to match resistor network.

Linear Technology Circuit Two Op Amp Instrumentation Amplifier

I measure Instrumentation Amplifier like this - Tera Ohms Impedance, Pico Amps Bias Current. Micro Volts Offset Voltage. Here is a Interactive demo i built for such a configuration. The Input Impedance of this module is very high and is symmetric. This circuit can be used for strain gauges and for four wire measurements. If inputs are in mV use OP07. The merit is that it uses only 2 OpAmps yet has high differential Input Impedance.

Dual Op-Amp Differential Amp Tutorial

The Outputs of Opamps are low impedance but still have limits they cannot drive more than a few mA of Current into the Load. If low ohmic value loads are to be applied use external transistors as amplifiers. If inputs Vn-Vp are floating, outputs may be random or oscillating, it is good to have a bias network of 10M resistors to a potential even zero or common, this enables some Vout when input floats.

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) 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

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

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."