UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Introducing the Clarke & Smith 747 schools receiver from 1966

peter_sol · 6th Jun 2020, 1:01 pm

Hi Nick
Re the negative feedback.
I think it will either come from the same low impedance winding as the pilot speaker or a seperate secondary winding.
if the 70v winding is centre tapped/balanced it wouldnt do to upset that.

6th Jun 2020, 1:01 pm	#34
peter_sol Octode Join Date: Aug 2003 Location: Welwyn Garden City, Herts. UK. Posts: 1,906	Re: Introducing the Clarke & Smith 747 schools receiver from 1966 Hi Nick Re the negative feedback. I think it will either come from the same low impedance winding as the pilot speaker or a seperate secondary winding. if the 70v winding is centre tapped/balanced it wouldnt do to upset that.