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

Jolly 7 · 9th Dec 2022, 12:21 am

[QUOTE=G6ONEDave;1519769]I've attached my thoughts on a circuit for you that might do the job.

Thanks for the detailed analysis and the circuit diagram. I think my UPC1212C IC has survived my experiments so far as the amplifier circuit still works normally when powered from another external source.

I will try to modify my circuit based on your diagram or else build a completely new one.

9th Dec 2022, 12:21 am	#42
Jolly 7 Octode Join Date: Feb 2018 Location: Southampton, Hampshire, UK. Posts: 1,061	Re: Noise issue with DIY variable PSU and audio amplifier [QUOTE=G6ONEDave;1519769]I've attached my thoughts on a circuit for you that might do the job. Thanks for the detailed analysis and the circuit diagram. I think my UPC1212C IC has survived my experiments so far as the amplifier circuit still works normally when powered from another external source. I will try to modify my circuit based on your diagram or else build a completely new one.