Category: Projects
Small General Purpose PSU
Currently under heavy review This is the evolution of my General Purpose PSU for small-signal projects. The full-sized boards felt a bit of a waste of space for some projects where there is no need for 55mm capacitors or dual 5W resistors. The design is pretty standard. We can connect secondaries either in series or…
MoFo – Single Ended Mosfet Follower Amplifier
This simple amplifier was published by Mike Rothacher back in 2017 for the Burning Amp Festival The concept is rather simple. It’s a single mosfet, loaded by a choke, and surrounded only by the parts required to bias it. It is a power buffer with unity gain, it is AC coupled both on the input…
General Purpose PSU
This page will document the evolution of my general purpose power supply project. As designed, the PSU will include a full wave rectifier, a CRC/CLC filter, and a Quasimodo snubber. Changelog
Simple jfet Preamplifier – jBoZ
This project is my take on the very popular simple preamplifier posted by Nelson Pass back in 2007 on DiyAudio. Introduction We could consider this simple circuit a “modern” version of the older Bride of Zen preamplifier. It follows the same simplistic approach of using a single active device with minimal peripheral parts. Here is…
Technics SL1200 MK2 – External PSU
One of the most impactful modifications that you can do on your SL1200. Currently under heavy reviewing General Idea The project started as part of an idea by Jim/6L6 from the diyaudio forum. It was inspired by the previous work of Wayne Colburn of Pass Labs. While simple, the idea had a profound impact on…
Technics SL1200 MK2 Modification Project
This page is an index of all the modifications I have made or designed for my SL1200 turntables Under Heavy Reviewing
Technics SL1200 MK2 – Regulator Modification
How to make the venerable SL1200 even better by replacing its discrete regulator with a more modern idea.
Technics SL 1200 – Adding a Filter to the External PSU
How to make a good turntable even better by moving the internal transformer into an external case, and adding an easy custom DIY regulator with a CRCRC filter