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Production SNES / PC Amplifier
This was an 8-Watt/channel version of the prototype. It used two LM383 Amplifiers. This final version also had an input selector for switching between your SNES and/or Sega Genesis, plus a better case...
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Prototype Multimedia Amplifier
As computer audio devices got better I felt a need for a better amplifier for my PC with more inputs so I could still have my SNES and Genesis connected. I also wanted to be able to see the level of...
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Prototype Audio Level Meters
These were my own design in audio level meters. This prototype was built to test in my next prototype audio controller. This design uses the LM3916N Dot/Bar display driver chip, and measures line-level...
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Prototype Audio Controller Power Supply
For my next project I broke things up into stages. The first step was to build the power supply for the audio controller section of my next amplifier. This is a 3-way power supply for that audio...
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Prototype Audio Controller
This is the beginning of a newer type of amplifier I started building in 1994. It is designed to be one part of a two part system in which the audio signals from all your devices come into a central...
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Prototype Power Amplifier
This is the working Prototype Power Amplifier I built around the LM3886T Power Amplifier IC. This unit was capable of approximately 85W RMS with a peak power output over 100W! This was the first...
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Custom Speaker System
While building custom amplifiers over 20W, I found that my bookshelf speakers were too weak to handle the power and I never test amplifiers on my good home stereo speakers so it was time to build a...
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Prototype Audio Controller Main Board
Sometimes when you etch your own PCBs using resist ink you can have issues such as over or under etching the board. But I hadn’t expected that my failure to clean and seal the board properly after...
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Audio Level Meters
These were the final version of my audio level meters, used on many audio projects, including audio amplifiers and audio controllers. They have 22 LEDs arranged as two rows of eleven and could be set...
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Digital Alarm Clocks
Three custom digital alarm clocks. Each slightly different. Each with many features such as dual crescendo alarms, dimmable display and battery backup of the time and settings. It seems that time is...
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