It's been 3 or 4 years since this newbie started learning tubes from the wealth of knowledge here. In that time I've been collecting schematics, studying, experimenting, buying parts and tubes that mostly just sit, fun to me but weird to my wife. A few months ago I fell into starting something ambitious, figuring out how I would go about building a direct bias 300B PSE amp with dual PSU's. Inspired by Andrea Ciuffoli, because I kept coming back to his 300B PSE schematic over time. I began with his schematic and dumped every thought I'd need to remember about making one myself onto paper. Simultaneously I've wanted to make dual "boat anchor" PSU's for it, inspired by the Border Patrol amp I really liked at AXPONA. The intention is for the boat anchors to have variable B+, umbilical connected to the amp, so I can re-use the PSU's maybe for a second project. So I'm imitating Andrea Ciuffoli and Border Patrol here but learning. I've attached the schematic as of today, if anyone wants to comment, recommend, help, find errors, etc. Along with the electronics, I'm also doing the mechanical design in 3D CAD as I hope to machine and fabricate the chassis all myself as well. As that gets farther along I'll post 3D models too. Thanks!
