Philco model 87

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Philco model 87

Mondial
Phorum Expert

Posts: 1,114
Threads: 14
Joined: Feb 2013
City: Irvington, NY

#21

01-21-2017, 09:34 PM

Are you measuring the voltage on the 26 tube from filament pin to filament pin or from filament pin to chassis ground?

Across the two pins should be 1.5 V AC, but from either filament pin to ground there will be a DC voltage of around 5 to 10 V.

If you were referring to using the 100 V rated caps as the filament bypass, I don't think its a problem. There is only the bias voltage across the caps to ground, which is less than 10 Vdc.

(This post was last modified: 01-21-2017, 09:48 PM by Mondial.)

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Messages In This Thread

Philco model 87 - by flatheadjr - 09-28-2016, 09:27 PM

RE: Philco model 87 - by flatheadjr - 01-11-2017, 09:24 PM

RE: Philco model 87 - by flatheadjr - 01-21-2017, 04:40 PM

RE: Philco model 87 - by Radioroslyn - 01-21-2017, 07:44 PM

RE: Philco model 87 - by Mondial - 01-21-2017, 09:34 PM

RE: Philco model 87 - by flatheadjr - 01-21-2017, 09:52 PM

RE: Philco model 87 - by Radioroslyn - 01-22-2017, 12:07 AM

RE: Philco model 87 - by flatheadjr - 01-22-2017, 12:30 AM

RE: Philco model 87 - by Radioroslyn - 01-22-2017, 07:10 AM

RE: Philco model 87 - by flatheadjr - 01-22-2017, 02:16 PM

RE: Philco model 87 - by Radioroslyn - 01-22-2017, 03:11 PM

RE: Philco model 87 - by flatheadjr - 01-22-2017, 03:48 PM

RE: Philco model 87 - by Radioroslyn - 01-23-2017, 01:25 AM

RE: Philco model 87 - by flatheadjr - 01-23-2017, 01:37 AM

RE: Philco model 87 - by Radioroslyn - 01-23-2017, 01:11 PM

RE: Philco model 77 - by Radioroslyn - 09-29-2016, 10:29 AM

RE: Philco model 77 - by flatheadjr - 09-29-2016, 12:17 PM

RE: Philco model 77 - by Arran - 10-01-2016, 05:00 AM

RE: Philco model 77 - by flatheadjr - 10-08-2016, 06:22 PM

RE: Philco model 77 - by Radioroslyn - 10-08-2016, 08:05 PM

RE: Philco model 77 - by flatheadjr - 10-12-2016, 09:31 PM

RE: Philco model 77 - by Radioroslyn - 10-12-2016, 10:35 PM

RE: Philco model 77 - by Radioroslyn - 10-17-2016, 08:05 PM

RE: Philco model 77 - by flatheadjr - 01-04-2017, 11:08 PM

RE: Philco model 77 - by Radioroslyn - 01-05-2017, 10:30 AM

RE: Philco model 77 - by flatheadjr - 01-05-2017, 09:46 PM

RE: Philco model 77 - by Arran - 01-09-2017, 04:02 AM

RE: Philco model 77 - by Radioroslyn - 01-09-2017, 11:42 AM

RE: Philco model 77 - by flatheadjr - 01-11-2017, 12:03 AM

RE: Philco model 77 - by Ron Ramirez - 01-11-2017, 01:20 PM

RE: Philco model 77 - by Radioroslyn - 01-11-2017, 09:03 AM

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