• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Voltage Regulator for Dyna PAS 2/3

I have been playing with mods for my Dyna Pas 3, and decided I wanted a voltage regulator I could drop into my existing filter board. To my delight, not only did it serve my needs, but it looks like it would make a stock PAS as quiet as a church mouse.

It's based on a full regulator/filter done by classicvalve.ca. It's creative commons licenced, but it is only available as a deep link, so I don't know if I should link it here. Anyway I used just the regulator circuit (fet is an irf710) and modified the feedback loop a little. It's designed to replace the first 10k resistor in the power supply.
 

Attachments

  • Screenshot_20201009-110115-01.jpeg
    Screenshot_20201009-110115-01.jpeg
    159.3 KB · Views: 125