National Semiconductor Analog University

National Semiconductor has a host of online tutorials free for the learning!  The course includes all the fundamentals of design from choosing parts to designing your own circuits.  There is […]

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Lie Detector Polygraph

Lie detectors are fake; I’m not going to lie. There is no way to electronically determine if someone is telling the truth. Before attempting this project, we reconciled with the […]

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Lie Detector Polygraph – Project Details

The lie detector circuit is quite complicated and went through many, many modifications until arriving at the final design. The goal was to use all analog, discrete parts. We ended […]

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MP3 Player – From Scratch

For the final project for an embedded systems class, we used Cadence to make a full MP3 player from start to finish including Bill of Materials, schematic, PCB layout, and […]

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Resistor Color Code

It doesn’t take long to memorize the colors for resistors, but sometimes it’s nice to check for tolerances and not think about it. This simple program gives a visual of […]

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SwitcherCAD/LTSpice

Linear Technologies offers SwitcherCAD/LTSpice–a free version of spice that allows you to draw up schematics and perform simple SPICE analysis.  Additional libraries (especially Linear components) are available for download. Download […]

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WinSCP

WinSCP – SFTP and FTP Client This is perhaps the best SFTP client I have found. SFTP securely transfers files across encrypted SSH so you do not have to have […]

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FilterPro

FilterPro – Discrete Filter Design Sometimes there is a need to make a Low-pass, High-pass, Band-pass, or Notch filter in discrete components. Filterpro gives the ability to make Bessel, Butterworth, […]

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