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Philco 20 - variable capacitor tuning
#2

Hi Rich,
Probably not a good idea to use electrolytic caps in this power supply. Originally they where foil/paper caps which withstand the ripple current much better than the e caps. The modern equivalents would mylar or poly caps. These are non polarized.
The e cap tend to short after being in service for a relatively short period of time.

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry


Messages In This Thread
Philco Model 20 schematic by Ron? - by winston763 - 02-19-2017, 01:56 AM
RE: Philco Model 20 schematic by Ron? - by Radioroslyn - 02-19-2017, 02:27 AM
RE: Philco Model 20 schematic by Ron? - by sam - 02-20-2017, 12:21 PM



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