Philco 37-690

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Philco 37-690

morzh
Odobenus rosmarus

Posts: 15,337
Threads: 530
Joined: Oct 2011
City: Jackson, NJ

#36

07-05-2014, 08:40 AM

I think I was close in my power estimate, if the voltage across that is aboute 300V the power will be close to 16W. 250V will give you 11W.

From this part of the sch the to resistors bias the cathode of ABAC, so it is not straightforward to change values. Maybe some concessions were made to minimize number parts (who counted kWh back then.....), sacrificing power dissip. Maybe not. Has to be studied.

Well, If the chassis can disipate that (I think it can) then good.

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Messages In This Thread

Philco 37-690 - by Ron Ramirez - 05-30-2014, 07:22 PM

RE: Philco 37-690 - by morzh - 05-30-2014, 07:31 PM

RE: Philco 37-690 - by Eliot Ness - 05-30-2014, 07:42 PM

RE: Philco 37-690 - by morzh - 05-30-2014, 08:16 PM

RE: Philco 37-690 - by Ron Ramirez - 05-30-2014, 08:29 PM

RE: Philco 37-690 - by Eliot Ness - 05-30-2014, 08:41 PM

RE: Philco 37-690 - by morzh - 05-30-2014, 09:49 PM

RE: Philco 37-690 - by Arran - 05-31-2014, 01:10 AM

RE: Philco 37-690 - by Eliot Ness - 05-31-2014, 07:14 AM

RE: Philco 37-690 - by Joeztech - 06-01-2014, 07:58 PM

RE: Philco 37-690 - by Ron Ramirez - 06-02-2014, 04:32 AM

RE: Philco 37-690 - by Phlogiston - 06-02-2014, 08:45 AM

RE: Philco 37-690 - by Ron Ramirez - 06-02-2014, 08:53 AM

RE: Philco 37-690 - by Phlogiston - 06-02-2014, 11:04 AM

RE: Philco 37-690 - by morzh - 06-02-2014, 11:28 AM

RE: Philco 37-690 - by Phlogiston - 06-02-2014, 11:34 AM

RE: Philco 37-690 - by bfrohwein - 06-02-2014, 12:03 PM

RE: Philco 37-690 - by Phlogiston - 06-02-2014, 01:09 PM

RE: Philco 37-690 - by Ron Ramirez - 06-02-2014, 04:21 PM

RE: Philco 37-690 - by Phlogiston - 06-02-2014, 08:03 PM

RE: Philco 37-690 - by bfrohwein - 06-02-2014, 11:14 PM

RE: Philco 37-690 - by Eliot Ness - 06-03-2014, 08:10 AM

RE: Philco 37-690 - by Ron Ramirez - 06-13-2014, 07:11 AM

RE: Philco 37-690 - by y2kbruce - 06-13-2014, 02:09 PM

RE: Philco 37-690 - by morzh - 06-13-2014, 02:10 PM

RE: Philco 37-690 - by Ron Ramirez - 06-13-2014, 02:59 PM

RE: Philco 37-690 - by Ron Ramirez - 07-01-2014, 08:28 PM

RE: Philco 37-690 - by Arran - 07-01-2014, 10:44 PM

RE: Philco 37-690 - by Ron Ramirez - 07-02-2014, 04:31 AM

RE: Philco 37-690 - by jerryhawthorne - 07-02-2014, 02:37 PM

RE: Philco 37-690 - by Ron Ramirez - 07-03-2014, 09:58 PM

RE: Philco 37-690 - by morzh - 07-03-2014, 10:19 PM

RE: Philco 37-690 - by Ron Ramirez - 07-04-2014, 10:45 AM

RE: Philco 37-690 - by morzh - 07-04-2014, 11:40 AM

RE: Philco 37-690 - by Ron Ramirez - 07-05-2014, 06:29 AM

RE: Philco 37-690 - by morzh - 07-05-2014, 08:40 AM

RE: Philco 37-690 - by Ron Ramirez - 07-17-2014, 07:55 PM

RE: Philco 37-690 - by Mondial - 07-17-2014, 08:56 PM

RE: Philco 37-690 - by Ron Ramirez - 07-18-2014, 04:51 AM

RE: Philco 37-690 - by Mondial - 07-18-2014, 05:43 AM

RE: Philco 37-690 - by Ron Ramirez - 07-18-2014, 06:26 AM

RE: Philco 37-690 - by Ron Ramirez - 07-18-2014, 06:30 AM

RE: Philco 37-690 - by Mondial - 07-18-2014, 07:02 AM

RE: Philco 37-690 - by morzh - 07-18-2014, 08:10 AM

RE: Philco 37-690 - by Ron Ramirez - 07-18-2014, 09:00 AM

RE: Philco 37-690 - by Phlogiston - 07-18-2014, 09:01 AM

RE: Philco 37-690 - by Mondial - 07-18-2014, 02:12 PM

RE: Philco 37-690 - by morzh - 07-18-2014, 03:03 PM

RE: Philco 37-690 - by y2kbruce - 07-18-2014, 04:37 PM

RE: Philco 37-690 - by Ron Ramirez - 07-18-2014, 04:48 PM

RE: Philco 37-690 - by morzh - 07-18-2014, 05:33 PM

RE: Philco 37-690 - by Ron Ramirez - 07-18-2014, 06:21 PM

RE: Philco 37-690 - by Ron Ramirez - 07-20-2014, 08:16 PM

RE: Philco 37-690 - by Ron Ramirez - 07-21-2014, 06:21 PM

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