Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

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

1948 Westinghouse Model 1821 (182) audio problems
#70

I was browsing on ebay and I found an output transformer that looks almost exactly like the one that was in this radio originally right down to the extra tap and the single secondary lead wire being soldered to the transformer body as a ground so that the speaker (which also has one lead attached to its body) can work through the radio chassis with only one wire lead attached to it.

the only difference is that the amp (more than likely a radio) it originally came out of was a single 6AQ5 tube amp, whereas this radio was a 35B5 tube, so I don't know if transformers care about tube voltage or not but I thought I would ask you guys first before I bought it, also how super critical is the primary winding's resistance rating? I'm asking because I also found a couple of NOS Stancor output transformers that have selectable primary and secondary winding taps for various resistance ratings and the lowest resistance ratings they had on the primary side was 500 Ohms and this radio says the primary winding is ~200 ohms but I'm not sure if there's a ± percentage that the resistance rating could be or if it really doesn't matter, the output transformers in question are linked below.

Replacement Output Transformer Option #1

Replacement Output Transformer Option #2

Replacement Output Transformer Option #3

Replacement Output Tranformer Option #4

Replacement Output Transformer Option #5

Replacement Output Transformer Option # 6


Hopefully one of these will work, let me know what you think.

Thanks.


Messages In This Thread
RE: 1948 Westinghouse Model 1821 (182) audio problems - by captainclock1988 - 09-15-2020, 11:27 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 42-345 Restoration/Repair
Hi OSanders, Look carefully at the band switch. Turn it slowly and "wiggle" it around the desired band. ...MrFixr55 — 12:33 AM
5U4 vs 5Z4 tubes
I think that RCA and GE introduced metal tubes in the USA in 1936.  I don't know if they were being made by RCA, GE or b...MrFixr55 — 11:20 PM
Philco 42-345 Restoration/Repair
Vlad95, Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM
5U4 vs 5Z4 tubes
A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM
Philco 42-345 Restoration/Repair
Thanks Rod, "When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM
Philco 42-345 Restoration/Repair
RodB :beerchug:Vlad95 — 10:22 AM
Philco 42-345 Restoration/Repair
Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM
5U4 vs 5Z4 tubes
Well this is a Hallicrafters SX/9 circa 1936. No real issues so far although I dodged a real bullet with a cap that was...bridkarl — 07:59 AM
5U4 vs 5Z4 tubes
The pinout is the same but the 5U4 has a 3 amp filament, verses 2 amps or less on the 5Z4. I think that the pinout of a ...Arran — 12:04 AM
Philco 42-345 Restoration/Repair
By the way. osanders0311 Take a look here: Dial cord stringing Guides May be here you can fount correct string settin...Vlad95 — 11:15 PM

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

>