Quote:
Originally Posted by Bill Cahill
What about the selenium rectifiers?
They need replacing as well...
Bill Cahill
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One of the dangers of posting progress; I was afraid someone would notice that.
The selenium rectifiers form a center-tapped full wave -125 VDC supply. There is a 39 ohm resistor in series with each rectifier. I believe they're there to limit in-rush current. They won't protect the transformer if the seleniums short.
The output of the supply is already fused. I intend to put a fuse in series with the 39 ohm resistors to protect the transformer.
On our original set we had to replace the seleniums once in its lifetime.
As long as the transformer is protected, I'm not worried. I have a lifetime supply of selenium rectifiers and if I have to change them every 5 years or so I don't have a problem with that. They're easy to get to and change.
I can't explain why I want to keep them in use anymore than I can explain why I want to watch a 60 year old TV. Maybe I just like the smell of garlic.
John