Another 7G605 Zenith TO

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Another 7G605 Zenith TO

morzh
Odobenus rosmarus

Posts: 15,813
Threads: 553
Joined: Oct 2011
City: Jackson, NJ

#40

04-10-2019, 09:03 PM

I've been meaning to do that for awhile. I added a zener across the cap that filters the filaments.
The cap is 25V and the voltage is 10.5V when run from batteries. Should any tube go open, the voltage will rise to the previous cap's voltage. Too high.
In goes a small 600W 13V surge suppressor, a high power TVS zener in its nature. It clamps at about 15V. Which is enough to keep the 25V cap safe and the filaments too if inserted hot (never a good idea but....).

That inconspicuous black rectangle close to the chassis edge is it.

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.

(This post was last modified: 04-10-2019, 09:04 PM by morzh.)

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Messages In This Thread

Another 7G605 Zenith TO - by morzh - 03-17-2019, 07:01 PM

RE: Another 7G605 Zenith TO - by EdHolland - 03-18-2019, 10:52 PM

RE: Another 7G605 Zenith TO - by morzh - 03-18-2019, 11:34 PM

RE: Another 7G605 Zenith TO - by EdHolland - 03-19-2019, 11:56 AM

RE: Another 7G605 Zenith TO - by morzh - 03-19-2019, 01:17 PM

RE: Another 7G605 Zenith TO - by morzh - 03-23-2019, 05:50 PM

RE: Another 7G605 Zenith TO - by Eliot Ness - 03-23-2019, 06:14 PM

RE: Another 7G605 Zenith TO - by morzh - 03-23-2019, 08:18 PM

RE: Another 7G605 Zenith TO - by WyTex - 03-24-2019, 06:58 AM

RE: Another 7G605 Zenith TO - by morzh - 03-24-2019, 10:20 AM

RE: Another 7G605 Zenith TO - by EdHolland - 03-24-2019, 10:38 AM

RE: Another 7G605 Zenith TO - by Ron Ramirez - 03-24-2019, 11:32 AM

RE: Another 7G605 Zenith TO - by Paul Philco322 - 03-24-2019, 11:37 AM

RE: Another 7G605 Zenith TO - by morzh - 03-24-2019, 12:15 PM

RE: Another 7G605 Zenith TO - by Phlogiston - 03-24-2019, 01:07 PM

RE: Another 7G605 Zenith TO - by morzh - 03-24-2019, 02:15 PM

RE: Another 7G605 Zenith TO - by morzh - 03-24-2019, 06:14 PM

RE: Another 7G605 Zenith TO - by morzh - 03-27-2019, 11:19 AM

RE: Another 7G605 Zenith TO - by morzh - 03-27-2019, 09:13 PM

RE: Another 7G605 Zenith TO - by radiohenry - 03-28-2019, 09:39 PM

RE: Another 7G605 Zenith TO - by morzh - 03-29-2019, 09:36 AM

RE: Another 7G605 Zenith TO - by TV MAN - 03-29-2019, 09:56 AM

RE: Another 7G605 Zenith TO - by morzh - 03-29-2019, 11:01 AM

RE: Another 7G605 Zenith TO - by morzh - 04-02-2019, 09:56 AM

RE: Another 7G605 Zenith TO - by morzh - 04-02-2019, 07:37 PM

RE: Another 7G605 Zenith TO - by morzh - 04-02-2019, 07:41 PM

RE: Another 7G605 Zenith TO - by Ron Ramirez - 04-02-2019, 09:38 PM

RE: Another 7G605 Zenith TO - by morzh - 04-02-2019, 10:29 PM

RE: Another 7G605 Zenith TO - by Ron Ramirez - 04-03-2019, 06:01 AM

RE: Another 7G605 Zenith TO - by Eliot Ness - 04-03-2019, 07:46 AM

RE: Another 7G605 Zenith TO - by morzh - 04-03-2019, 08:47 AM

RE: Another 7G605 Zenith TO - by morzh - 04-03-2019, 09:20 PM

RE: Another 7G605 Zenith TO - by morzh - 04-05-2019, 08:54 PM

RE: Another 7G605 Zenith TO - by morzh - 04-07-2019, 05:47 PM

RE: Another 7G605 Zenith TO - by morzh - 04-09-2019, 07:37 PM

RE: Another 7G605 Zenith TO - by morzh - 04-10-2019, 03:11 PM

RE: Another 7G605 Zenith TO - by WyTex - 04-10-2019, 04:09 PM

RE: Another 7G605 Zenith TO - by morzh - 04-10-2019, 04:48 PM

RE: Another 7G605 Zenith TO - by morzh - 04-10-2019, 09:03 PM

RE: Another 7G605 Zenith TO - by morzh - 04-14-2019, 05:13 PM

RE: Another 7G605 Zenith TO - by morzh - 04-18-2019, 02:59 PM

RE: Another 7G605 Zenith TO - by morzh - 04-22-2019, 01:36 PM

RE: Another 7G605 Zenith TO - by Eliot Ness - 04-22-2019, 02:34 PM

RE: Another 7G605 Zenith TO - by morzh - 04-22-2019, 04:35 PM

RE: Another 7G605 Zenith TO - by Eliot Ness - 04-22-2019, 06:07 PM

RE: Another 7G605 Zenith TO - by morzh - 04-22-2019, 10:49 PM

RE: Another 7G605 Zenith TO - by morzh - 04-23-2019, 07:59 PM

RE: Another 7G605 Zenith TO - by morzh - 04-24-2019, 02:05 PM

RE: Another 7G605 Zenith TO - by morzh - 04-25-2019, 08:28 PM

RE: Another 7G605 Zenith TO - by morzh - 04-28-2019, 06:57 PM

RE: Another 7G605 Zenith TO - by WyTex - 04-29-2019, 07:09 AM

RE: Another 7G605 Zenith TO - by morzh - 04-29-2019, 08:07 AM

RE: Another 7G605 Zenith TO - by morzh - 04-30-2019, 09:26 PM

RE: Another 7G605 Zenith TO - by EdHolland - 04-30-2019, 10:06 PM

RE: Another 7G605 Zenith TO - by WyTex - 05-01-2019, 11:54 AM

RE: Another 7G605 Zenith TO - by morzh - 05-01-2019, 01:51 PM

RE: Another 7G605 Zenith TO - by Eliot Ness - 05-01-2019, 02:08 PM

RE: Another 7G605 Zenith TO - by morzh - 05-06-2019, 09:33 AM

RE: Another 7G605 Zenith TO - by KCMike - 05-06-2019, 09:59 AM

RE: Another 7G605 Zenith TO - by morzh - 05-06-2019, 10:44 AM

RE: Another 7G605 Zenith TO - by morzh - 05-15-2019, 08:30 PM

RE: Another 7G605 Zenith TO - by jake wells - 05-15-2019, 11:50 PM

RE: Another 7G605 Zenith TO - by morzh - 05-16-2019, 07:50 AM

RE: Another 7G605 Zenith TO - by morzh - 05-16-2019, 08:28 PM

RE: Another 7G605 Zenith TO - by rfeenstra - 05-17-2019, 12:29 AM

RE: Another 7G605 Zenith TO - by Eliot Ness - 05-17-2019, 07:19 AM

RE: Another 7G605 Zenith TO - by morzh - 05-17-2019, 09:00 AM

RE: Another 7G605 Zenith TO - by morzh - 05-24-2019, 10:51 AM

RE: Another 7G605 Zenith TO - by morzh - 05-25-2019, 10:03 PM

RE: Another 7G605 Zenith TO - by morzh - 05-26-2019, 03:01 PM

RE: Another 7G605 Zenith TO - by Eliot Ness - 05-26-2019, 06:33 PM

RE: Another 7G605 Zenith TO - by morzh - 05-26-2019, 06:57 PM

RE: Another 7G605 Zenith TO - by morzh - 05-27-2019, 08:51 PM

RE: Another 7G605 Zenith TO - by KCMike - 05-27-2019, 08:55 PM

RE: Another 7G605 Zenith TO - by morzh - 05-27-2019, 09:29 PM

RE: Another 7G605 Zenith TO - by EdHolland - 06-01-2019, 11:18 PM

RE: Another 7G605 Zenith TO - by morzh - 06-02-2019, 10:01 AM

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