May 30, 2018May 30, 2018 by Timothy Cose

Another batch of boards

Another small batch of prototype boards for projects has arrived. I’ll test these as soon as I find the time to stuff and test the last batch of experiments…

dc heaters — Simple 6.3V to 12V regulated heater board (LM7812 based), good for phono builds

mini booster — A miniature DC booster board with on-board USB charger for battery power B+

A simple opamp phono preamp powered by a couple of 9V batteries just because

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Weekly /r/diytubes No Dumb Questions Thread - June 24, 2022 to June 30, 2022
Help with an organ amplifier
Putting together a preamp. This one has separate HV filter buffers and ground runs for each channel.
This component is connected between the 2 positive terminals of a 50uF + 50uF 500v can capacitor wired in parallel. Am I right in assuming it’s a diode? If so what type of diode is it, and would anyone be willing to explain its purpose. (Sorry for the picture quality)
Weekly /r/diytubes No Dumb Questions Thread - June 17, 2022 to June 23, 2022

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