Model 90 Output Transformer

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Model 90 Output Transformer

rrova
Junior Member

Posts: 26
Threads: 4
Joined: Feb 2016
City: Nelson State, Province, Country: BC

#22

03-07-2016, 02:47 AM

Well, I got to the Ham Swap meet a bit late today (darn GPS!) but I managed to pick up a nice Precision 192 tube tester in very good condition, and a good price. Nice wooden box, too. So not a total loss! I got back to looking at the 2766J output transformer and deconstructed it a bit to see if I could figure out the true connections. The secondary connections were obvious when I saw what I was looking at, and they are NOT open, they work just fine. However, the primary side still is connected only between one of the 3 possible combinations. The other 2 combinations are infinite ohms...To see if I could understand it better, I attached my variable AC and monitored the input and output voltages. For the one good combination, I got 1V out at the secondary for 15 volts in. So something is very skewed if this should be a 100:1 turn ratio. Long story short, a Hammond 125C is on order and will arrive in a couple of weeks. Thanks again for all your input.

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Messages In This Thread

Model 90 Output Transformer - by rrova - 03-02-2016, 03:52 AM

RE: Model 90 Output Transformer - by klondike98 - 03-02-2016, 08:07 AM

RE: Model 90 Output Transformer - by morzh - 03-02-2016, 09:29 AM

RE: Model 90 Output Transformer - by Radioroslyn - 03-03-2016, 02:19 AM

RE: Model 90 Output Transformer - by rrova - 03-03-2016, 04:53 AM

RE: Model 90 Output Transformer - by Arran - 03-03-2016, 05:20 AM

RE: Model 90 Output Transformer - by rrova - 03-04-2016, 06:05 AM

RE: Model 90 Output Transformer - by morzh - 03-04-2016, 10:34 AM

RE: Model 90 Output Transformer - by rrova - 03-04-2016, 05:43 PM

RE: Model 90 Output Transformer - by morzh - 03-04-2016, 07:32 PM

RE: Model 90 Output Transformer - by rrova - 03-04-2016, 08:37 PM

RE: Model 90 Output Transformer - by morzh - 03-04-2016, 09:24 PM

RE: Model 90 Output Transformer - by rrova - 03-04-2016, 09:53 PM

RE: Model 90 Output Transformer - by morzh - 03-04-2016, 09:58 PM

RE: Model 90 Output Transformer - by rrova - 03-04-2016, 10:07 PM

RE: Model 90 Output Transformer - by Tubesforme - 03-08-2016, 03:41 PM

RE: Model 90 Output Transformer - by rrova - 03-05-2016, 04:01 AM

RE: Model 90 Output Transformer - by Radioroslyn - 03-05-2016, 08:06 PM

RE: Model 90 Output Transformer - by rrova - 03-05-2016, 08:53 PM

RE: Model 90 Output Transformer - by morzh - 03-05-2016, 08:53 PM

RE: Model 90 Output Transformer - by Radioroslyn - 03-05-2016, 10:35 PM

RE: Model 90 Output Transformer - by morzh - 03-05-2016, 11:15 PM

RE: Model 90 Output Transformer - by rrova - 03-07-2016, 02:47 AM

RE: Model 90 Output Transformer - by morzh - 03-08-2016, 03:51 PM

RE: Model 90 Output Transformer - by rrova - 03-08-2016, 06:17 PM

RE: Model 90 Output Transformer - by Tubesforme - 03-09-2016, 10:59 PM

RE: Model 90 Output Transformer - by rrova - 03-09-2016, 11:04 PM

RE: Model 90 Output Transformer - by Tubesforme - 03-12-2016, 05:47 PM

RE: Model 90 Output Transformer - by Tubesforme - 03-10-2016, 08:35 PM

RE: Model 90 Output Transformer - by morzh - 03-08-2016, 06:50 PM

RE: Model 90 Output Transformer - by rrova - 03-09-2016, 05:33 PM

RE: Model 90 Output Transformer - by morzh - 03-09-2016, 05:39 PM

RE: Model 90 Output Transformer - by morzh - 03-10-2016, 11:33 AM

RE: Model 90 Output Transformer - by morzh - 03-10-2016, 09:19 PM

RE: Model 90 Output Transformer - by rrova - 03-11-2016, 01:06 AM

RE: Model 90 Output Transformer - by morzh - 03-11-2016, 10:36 AM

RE: Model 90 Output Transformer - by Arran - 03-13-2016, 05:31 AM

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