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Attic Fresh Sentinel Radio.
Arran
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#3

09-27-2013, 10:30 PM
A five tube battery set, the sixth is a ballast so you can run the filaments from a wet cell or an Eveready Air cell. In spite of how it looks it may even decide to play if you applied power to it. I found the circuit diagram on Nostalgia Air:

http://www.nostalgiaair.org/PagesByModel...018248.pdf

It takes 67-1/2 volts and 135 volts for B+, -16-1/2 volts negative for C- (this is quite a bit most are only -4.5 volts) and the tubes use 2 volts for the filaments if you bypass the ballast.
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Arran
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Messages In This Thread
Attic Fresh Sentinel Radio. - by Jayce - 09-27-2013, 07:06 PM
RE: Attic Fresh Sentinel Radio. - by codefox1 - 09-27-2013, 10:15 PM
RE: Attic Fresh Sentinel Radio. - by Arran - 09-27-2013, 10:30 PM
RE: Attic Fresh Sentinel Radio. - by Jayce - 09-28-2013, 03:40 PM



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