UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Noise issue with DIY variable PSU and audio amplifier

Cruisin Marine · 3rd Dec 2022, 10:05 pm

Firstly, what sort of noise?
Is it hum?
What sort of regulator is it and what current is being drawn?
What is the capability of the tfmr?
And what is the amp and current being drawn?
I would guess some isolation on supply lines and extra decoupling at the destination points may help, as long as the tfmr isn't drooping under too much load of course.

Cheers.

3rd Dec 2022, 10:05 pm	#3
Cruisin Marine Heptode Join Date: Jul 2018 Location: Worthing, West Sussex, UK. Posts: 992	Re: Noise issue with DIY variable PSU and audio amplifier Firstly, what sort of noise? Is it hum? What sort of regulator is it and what current is being drawn? What is the capability of the tfmr? And what is the amp and current being drawn? I would guess some isolation on supply lines and extra decoupling at the destination points may help, as long as the tfmr isn't drooping under too much load of course. Cheers. __________________ "Behind every crowd, there's a silver Moonshine" Last edited by Cruisin Marine; 3rd Dec 2022 at 10:24 pm.