UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

sparkymike · 5th Apr 2020, 2:19 pm

When feedback loop was removed, the scope trace cleaned up a lot and the rising hum level did not occur. Hum was still present but at a much lower level.
Mike.

5th Apr 2020, 2:19 pm	#130
sparkymike Octode Join Date: Dec 2006 Location: Colchester, Essex, UK. Posts: 1,076	Re: Quad 11 test run When feedback loop was removed, the scope trace cleaned up a lot and the rising hum level did not occur. Hum was still present but at a much lower level. Mike.