Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Output Transformer Resitance
#1

I have been working on the 37-660 I picked up recently and have a couple of questions. I have capped it and replaced resistors where necessary. I fired it up and measured volages and all seem to be reasonable except I measure 256V on the plate of the 6K5 where it is supposed to be 150. Also I checked the resistance of the OT and am getting some real high readings. The schematic says on the primary CT to either end should be 330 ohms and 370. I am getting 1540 and 1980. I suspect that there may be those "green spots of corrosion" creating the high readings. I had this happen last year in a 41-629. Can anmyone confirm the approximate resistance readings of the primary should be?

Any clue as to why I would have such a high plate voltage on the 6K5? Thanks.
http://www.nostalgiaair.org/PagesByModel...013220.pdf


Messages In This Thread
Output Transformer Resitance - by marv - 03-26-2012, 07:45 PM
RE: Output Transformer Resitance - by tab10672 - 03-26-2012, 08:07 PM
RE: Output Transformer Resitance - by marv - 03-26-2012, 08:36 PM
RE: Output Transformer Resitance - by tab10672 - 03-26-2012, 09:24 PM
RE: Output Transformer Resitance - by codefox1 - 03-27-2012, 01:26 AM
RE: Output Transformer Resitance - by marv - 03-27-2012, 11:44 AM
RE: Output Transformer Resitance - by tab10672 - 03-27-2012, 03:24 PM
RE: Output Transformer Resitance - by Ron Ramirez - 03-27-2012, 06:19 PM
RE: Output Transformer Resitance - by morzh - 03-28-2012, 09:21 PM
RE: Output Transformer Resitance - by marv - 03-27-2012, 07:10 PM
RE: Output Transformer Resitance - by Ron Ramirez - 03-27-2012, 07:44 PM
RE: Output Transformer Resitance - by codefox1 - 03-27-2012, 08:50 PM
RE: Output Transformer Resitance - by marv - 03-28-2012, 09:33 PM
RE: Output Transformer Resitance - by marv - 04-06-2012, 07:39 PM
RE: Output Transformer Resitance - by exray - 04-07-2012, 10:56 AM
RE: Output Transformer Resitance - by codefox1 - 04-19-2012, 08:23 PM
RE: Output Transformer Resitance-UPDATE - by marv - 04-19-2012, 02:35 PM
RE: Output Transformer Resitance - by morzh - 04-19-2012, 03:13 PM
RE: Output Transformer Resitance - by marv - 04-19-2012, 07:13 PM
RE: Output Transformer Resitance - by Arran - 04-19-2012, 07:54 PM
RE: Output Transformer Resitance - by marv - 04-19-2012, 08:35 PM



Users browsing this thread: 7 Guest(s)
[-]
Recent Posts
Philco 42-1008 conversion kit
I read about a kit to convert the variable speed changer in the Philco 42-1008 into a single speed unit.  That would rem...alangard — 09:30 PM
HiFi (Chifi) tube amp build - but my own design.
Tim Well...a chassis is metal. Magnetic or not, it does not matter. A transformer has some hum to it. It is natural. Th...morzh — 08:40 PM
Hickok AC51 tube tester
I thought the 83 tube was bad because it looked white but it tests strong. Blue gassy though. I checked the fuse, it was...martinj — 08:37 PM
Shadow Meter Bulb
Ross I am not sure what current limiting effect the incandescent provides. They are two different parts of the sch...morzh — 08:31 PM
12' Philco
Bob Thanks for that photo. I have been looking for it, and I cannot find anythinmg on the web. I forgot it was here...morzh — 08:29 PM
Shadow Meter Bulb
I think after all has been said, I will use the same bulb that is specified for the dial pilot light which is a #55. I ...georgetownjohn — 07:31 PM
12' Philco
There was also this Philco! klondike98 — 07:25 PM
HiFi (Chifi) tube amp build - but my own design.
I expected a challenge and this is just part of it. But, it's also supposed to be fun, entertaining, informative and enj...TV MAN — 07:12 PM
Shadow Meter Bulb
Butting in here with a question. Since the shadow meter is connected directly to the 1st and 2nd I.F.'s wouldn't the met...RossH — 06:43 PM
HiFi (Chifi) tube amp build - but my own design.
Mike, Tim; you are about to enter the twilight zone. Doo doo doo doo, doo doo doo doo This is something alright. I'm go...RodB — 06:26 PM

[-]
Who's Online
There are currently no members online.

>