UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Single-ended Transistor amps.

G6Tanuki · 19th Oct 2019, 5:13 pm

Thing is, I've got a load of old OC26/35/NKT404 Germanium power-transistors - which I'd honestly rather put to work than leave sitting in a component-drawer for another decade or two (only to have them thrown-out by the house clearance people when I finally snuff it).

I've also found a couple of AUY10 - which was one of the first early-60s TO3 Germanium power transistors that worked satisfactorily up to 10MHz or so (I believe it was originally designed for use as a ferrite-core-driver for computer memories). meaning I'm now wondering if the output transformer for any "single-ended transistor amp" should also include a tap to let me use it as an AM modulator?

19th Oct 2019, 5:13 pm	#29
G6Tanuki Dekatron Join Date: Apr 2012 Location: Wiltshire, UK. Posts: 14,007	Re: Single-ended Transistor amps. Thing is, I've got a load of old OC26/35/NKT404 Germanium power-transistors - which I'd honestly rather put to work than leave sitting in a component-drawer for another decade or two (only to have them thrown-out by the house clearance people when I finally snuff it). I've also found a couple of AUY10 - which was one of the first early-60s TO3 Germanium power transistors that worked satisfactorily up to 10MHz or so (I believe it was originally designed for use as a ferrite-core-driver for computer memories). meaning I'm now wondering if the output transformer for any "single-ended transistor amp" should also include a tap to let me use it as an AM modulator?