Philco 38-5X

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Philco 38-5X

Arran
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10-14-2016, 04:48 AM

(10-13-2016, 10:24 PM)TerryMSU Wrote: So what gives it away as a 25 Hz model? I think that may affect my filter cap values on the B+ filter. You are probably right about the cap mounts. What do I do about that?
Thanks,
TerryMSU

The thickness of the iron core, 25 cycle transformers have more laminations to prevent core saturation with the lower line frequency. The values of the original filter caps might be higher in microfarads then in a 60 cycle set to deal with the 25 cycle ripple, but having larger cap values won't hurt anything for 60 cps.
Regards
Arran

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Philco 38-5 initial inspection - by TerryMSU - 10-13-2016, 09:10 PM

RE: Philco 38-5 initial inspection - by Radioroslyn - 10-13-2016, 10:10 PM

RE: Philco 38-5 initial inspection - by Arran - 10-14-2016, 04:30 AM

RE: Philco 38-5X - by TerryMSU - 10-20-2016, 12:04 PM

RE: Philco 38-5X - by Radioroslyn - 10-20-2016, 01:17 PM

RE: Philco 38-5 initial inspection - by TerryMSU - 10-13-2016, 10:24 PM

RE: Philco 38-5 initial inspection - by Arran - 10-14-2016, 04:48 AM

RE: Philco 38-5 initial inspection - by morzh - 10-14-2016, 09:47 AM

RE: Philco 38-5X - by Ron Ramirez - 10-19-2016, 06:54 PM

RE: Philco 38-5X - by Ron Ramirez - 10-19-2016, 06:58 PM

RE: Philco 38-5X - by Ron Ramirez - 10-20-2016, 01:29 PM

Philco 38-5X How to remove the Shadowmeter? - by TerryMSU - 10-18-2016, 09:28 PM

RE: Power transformer apparently swapped in Philco 38-5 - by TerryMSU - 10-18-2016, 10:34 PM

RE: Power transformer apparently swapped in Philco 38-5 - by Radioroslyn - 10-18-2016, 11:19 PM

RE: 38-5X with 25Hz transformer. Winding resistances? - by Arran - 10-19-2016, 01:09 AM

RE: Philco 38-5X How to remove the Shadowmeter? - by TerryMSU - 10-19-2016, 11:12 AM

RE: Philco 38-5X How to remove the Shadowmeter? - by klondike98 - 10-19-2016, 12:38 PM

RE: Philco 38-5X How to remove the Shadowmeter? - by TerryMSU - 10-19-2016, 05:33 PM

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