This is mostly just links to things I have written. Many of them were prepared as articles for Sound Practices and Glass Audio, now unfortunately both gone. I am still in the process of editing the articles so please forgive the glitches.
The Mechanics of Distortion in Triodes
A Different Take on the Diff Amp.
Cathode Driven Class A2 triodes
A Balanced Class A 211 Amplifier
A Pentode Cathode Follower Amplifier
A Guide to Restoration of the Garrard 301
And 301 Part 2: Disassembly and Maintenance
A PP KT88 Variable Speed Drive for the 301
A Drive for a Three Phase Electronically Commutated Motor (AKA Brushless DC).
AC synchronous Motors and Drives
Belt, Idler and DD mechanics