Quote:
Originally Posted by dieseljeep
A couple of questions!
What was that small selenium rectifier used for?
The octal tube base next to the 19BG6 has what in it. I saw one 60 years ago and that set had one that had a neat little perforated metal cover on it.
It seemed to be a surge limiting resistor in it, but a tiny one.
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Looks like it is used to create the -150V buss.
That socket is for a Ballast resistor. On this chassis, it was just a piece of wire.
Both can be seen on the schematic below.
BTW, Emerson had drawn the symbols for the diodes backwards. My pencil marks are the correct way.