In this page you can find my open-source electronics projects. All circuits and schematics are distributed under a Creative Commons license Attribution-ShareAlike 2.5. My only request is that, if you want to sell them, although not obligatory, send me one by regular mail :D.
Note: All schematics have been tested.
PUNCH amplifier: 1W guitar amplifier
I've started this project as an alternative to the infamous ROG's Ruby amp. I built a few Ruby's but I didn't like the frequency response of them. It uses a JFET buffer with a MPF102 and the 1W TDA7052 chip. It is a clean amp and it reacts very well with any pedal in front of it. [+]
The "triode" emulator revisited
After reading the excellent page at http://www.runoffgroove.com about the
Fetzer Valve circuit and the
paper that supports it (Dimitri Danyuk, "Triode Emulator" 116th Audio
Engineering Society Convention, May 2004 in Berlin, Germany), I wonder how the
results in that paper could be obtained analytically This page contains my
impressions on it. I've found that the exact value of the magic constant is
. [+]
The Bulbamp
I've started this project with the idea of designing a solid state 1 Watt guitar amplifier and ended up with this 3 resistors, 3 capacitors and a mosfet in a class A configuration and, of course, a light bulb. [+]
My schematics collection of SS discrete (lower than) 1 Watt amplifiers
Some inspirational <= 1 watt amplifiers. [+]
Created: NaN
Last updated: 23-03-2025 [15:00]
For attribution, please cite this page as:
Charters, T., "My DIY things reminds me of you": https://nexp.pt/diy.html (23-03-2025 [15:00])
(cc-by-sa) Tiago Charters - tiagocharters@nexp.pt