Tuesday, May 28, 2013

How to use the GTL3 Bulb: A Simple and Inexpensive UVC Source

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WARNING: UVC, or short wavelength ultraviolet light, is dangerous. It causes sunburn, eye damage including cataracts, and skin cancer. Even ...
70 comments:
Sunday, December 9, 2012

How Accurate are Manufacturers' Bipolar Transistor SPICE Models?

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Recently I've been working on a few circuits that use discrete bipolar junction transistors (BJT) operating in linear (as opposed to swi...
Saturday, February 27, 2010

Anjon Big Frog Pond Pumps - Misleading Claims on Energy Efficient

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A while back I bought an Anjon BF3000 "Big Frog" pond pump to replace a broken pump in our koi pond. The big reason I chose this ...
1 comment:
Wednesday, December 16, 2009

Simple Constant Power Loads in LTspice

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I recently needed to model active and passive power factor correction techniques as part of the design process for a 100 watt offline LED ba...
12 comments:
Thursday, July 2, 2009

Mauna Kea - IRTF - Hawaii Pictures

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One of the things I've done as an electrical engineering consultant is to design and build drive and data acquisition systems for many o...
Wednesday, January 23, 2008

Passive Tone Control for Vacuum Tube Amps

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This is a passive tone control circuit that I developed as part of a single-ended class A triode amp project I'm working on. I wanted ba...

This Blog...

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This blog is the repository for all my random thoughts and ideas that don't really fit on my other blogs or forums. Personal, hobbies, w...