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Spice based electronic circuit simulation and circuit analysis software. 5Spice is a step up from student oriented simulators but still easy to use.

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.

A discussion forum for electronics and circuits

Avnet Express is an electronic components distributor offering services, datasheet download and PDF s for over 3M+ part numbers. Order and search part numbers online with Same Day Shipping.

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NI leverages commercial technologies, such as industry-standard computers and the Internet, to deliver customer-defined automation, test and measurement hardware and software solutions for engineers and scientists.

TINA Design Suite is a powerful circuit simulation package for analyzing, designing, and real time testing of analog, digital, VHDL, MCU, SMPS, RF, communication, optoelectronic and mixed electronic circuits and their PCB layouts.

Transim Technology Corporation - Leading Online Design: Power Management IC, Data Converters, Solid State Lighting, Discretes, Microcontrollers, - WebSim

Welcome to ANSYS, Inc. - computer-aided engineering technology and engineering design analysis software products and services.

The Top Spread Spectrum, RF, and Wireless website, Spread Spectrum Scene Online is your best resource for information about Spread Spectrum, RF, CDMA, 3g and Wireless. Our pages are filled with useful tutorial, how-to and reference information for th...