35A5 tube substitution

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35A5 tube substitution

Mondial
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Posts: 1,114
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Joined: Feb 2013
City: Irvington, NY

#11

03-15-2017, 09:13 AM

The voltage readings you are getting are exactly in line with what would be expected with the 50A5 installed.

If you add up the rated filament voltages of all the tubes you have now in the circuit, it comes to 135 V. Since you are actually only applying about 120 V, each tube will receive a bit less than its rated voltage, which is what you are measuring.

When you install the proper 35A5, all the filament voltages should be at or near their rated values.

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Messages In This Thread

35A5 tube substitution - by wally73 - 03-13-2017, 10:47 AM

RE: 35A5 tube substitution - by sam - 03-13-2017, 11:57 AM

RE: 35A5 tube substitution - by David - 03-13-2017, 12:11 PM

RE: 35A5 tube substitution - by TV MAN - 03-13-2017, 12:37 PM

RE: 35A5 tube substitution - by Radioroslyn - 03-13-2017, 02:59 PM

RE: 35A5 tube substitution - by wally73 - 03-13-2017, 04:54 PM

RE: 35A5 tube substitution - by wally73 - 03-13-2017, 04:57 PM

RE: 35A5 tube substitution - by Arran - 03-13-2017, 11:43 PM

RE: 35A5 tube substitution - by wally73 - 03-14-2017, 04:18 PM

RE: 35A5 tube substitution - by wally73 - 03-15-2017, 08:36 AM

RE: 35A5 tube substitution - by Mondial - 03-15-2017, 09:13 AM

RE: 35A5 tube substitution - by wally73 - 03-15-2017, 10:05 AM

RE: 35A5 tube substitution - by Mondial - 03-15-2017, 11:29 AM

RE: 35A5 tube substitution - by wally73 - 03-15-2017, 11:45 AM

RE: 35A5 tube substitution - by Radioroslyn - 03-15-2017, 02:03 PM

RE: 35A5 tube substitution - by wally73 - 03-15-2017, 06:00 PM

RE: 35A5 tube substitution - by TV MAN - 03-16-2017, 11:37 PM

RE: 35A5 tube substitution - by wally73 - 03-17-2017, 07:12 AM

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