Jeep XJ: no start, no spark, resolved!
after more than two weeks of not being able to start up the XJ, i was finally able to resolve the issue. turns…
Author: abram
PT2399: nuances…
i’ve been wrapped up in Jeep repair lately as there’s some sort of issue prevent the beloved XJ from firing up. i have,…
initial test of a modulated PT2399 circuit…
a breadboard version of some PT2399 modifications i’ve been working on. there are a lot of DIY schematics that utilize the PT2399 (Magnus…
MOSFET overdrive… final build?
i might add some labels for the pots and contact info, but it’s done for the most part.
simple LFO circuits…
i was reading over this thread on diystompboxes.com about building an analog LFO circuit for some wild noise idea i’ve got brewing in…
TDA2040 PCB layout…
backlit PCB layout of the TDA2040 solid-state amp i’ve been working on. i’m still using perf boards until i wrap my head around…
TDA2040-based amp schematic with EQ…
well here’s the first draft of the simplest medium powered solid state design i could muster. TL082 can easily be substituted with a…
Sinometer 10MHz oscilloscope…
simple. cheap. a thing of beauty to add to the ol’ workbench.
experimental PTT signaling switch…
this is an experimental circuit i threw together today. i’ve been working on getting a VOX circuit to work with the Yaesu FT-60R…