Adding A/V input to hot chassis SS B&W TV

[zeno]

Originally Posted by JohnCT

I haven't, but I remember working on some low end TVs 40 years ago that did use opto couplers for AV isolation. All you need is a transistor or two plus an opto for each, and a suitable filtered source to power your circuits.

Maybe someone here can remember who used that layout. If we know who, we can find a schematic and simply duplicate that.

John

NAP used it, C5 chassis IIRC. At least in the 80's, maybe other chassii.
Zeno