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It's been long time since I looked in the sch.
If this is how it's conencted then yes, probably for start/stop spike suppression.
Vf of selenium rectifier is about 1V/section so if you have say 4-section one you will see about 4V drop.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
Messages In This Thread
RE: Philco TPA-1 - by morzh - 11-14-2019, 12:43 PM
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Philco 42-345 Restoration/Repair
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| Vlad95,
Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM |
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5U4 vs 5Z4 tubes
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| A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM |
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Philco 42-345 Restoration/Repair
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| Thanks Rod,
"When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM |
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Philco 42-345 Restoration/Repair
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| RodB
:beerchug:Vlad95 — 10:22 AM |
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Philco 42-345 Restoration/Repair
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| Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM |
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5U4 vs 5Z4 tubes
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| Well this is a Hallicrafters SX/9 circa 1936.
No real issues so far although I dodged a real bullet with a cap that was...bridkarl — 07:59 AM |
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5U4 vs 5Z4 tubes
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| The pinout is the same but the 5U4 has a 3 amp filament, verses 2 amps or less on the 5Z4. I think that the pinout of a ...Arran — 12:04 AM |
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Philco 42-345 Restoration/Repair
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| By the way.
osanders0311
Take a look here: Dial cord stringing Guides
May be here you can fount correct string settin...Vlad95 — 11:15 PM |
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5U4 vs 5Z4 tubes
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| 5U4 and 5Z4 almost identical. I think nothing happened if you left 5U4 instedad 5Z4 long time.
Just heater current 5U4 ...Vlad95 — 11:02 PM |
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Philco 42-345 Restoration/Repair
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| Hello Vlad95 ,
Very Funny !
Sincerely Richardradiorich — 11:01 PM |
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