#breadboard

Definitely been a minute since I posted on here. Finally got around to pulling photos off my phone the other day, so here's something I've been working on. :)

This is a prototype of a vacuum tube amplifier I'm designing. It's cobbled together from circuits I found online and some stuff I just did based on tube data. First few pictures show the breadboarding process. Essentially from left-to-right it's:

Power Supply ---> 3 preamp/driver stages --> Push/Pull output stage

The big grey box is part of the power supply. It's a 6.3V 30A filament transformer that came out of an old vacuum tube computer. The last breadboard picture includes a custom volume control I made which also drives a nixie tube. As you turn up the volume, the number on the nixie will increment from 0-9.

Last few pictures are a potential layout for the chassis. Not 100% sure this is what I'm going to go with, but it gives an idea of how large this thing will be.

working on a new pedal while i’m waiting for VAB parts & etching