Posts: 70
Threads: 17
Joined: Jan 2006
City: Newbern
State, Province, Country: Tennessee
My power transformer let its smoke out. Previous restorer didn't replace the caps in the condenser block. Doing that now. My question is the original trans is a 3752T and the one I found is a 3752J it is taller and a little wider but will bolt in. Are these the same despite the physical difference? Same tab set up.
(This post was last modified: 06-06-2020, 12:34 PM by
rjm.)
Posts: 7,283
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
The 1936 parts catalog doesn't list any suffix after the number. If the core size is the same I would use it. The power transformers w/2.5 v heater windings are not very plentiful these days.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
Posts: 70
Threads: 17
Joined: Jan 2006
City: Newbern
State, Province, Country: Tennessee
that's the thing, same part number but my book also shows no suffix. it is larger. Don't know how to post a pic of them
Posts: 327
Threads: 30
Joined: Jul 2017
City: Hay Lakes, Alberta,Canada
The letter suffix and size difference may be a 50-60 cycle transformer and a 25-40 cycle transformer. You can use it; you just may need to adjust the size of the filter capacitors. I'll look it up for you...
Posts: 70
Threads: 17
Joined: Jan 2006
City: Newbern
State, Province, Country: Tennessee
Thanks. The trans I have is 60 Cycle part #3752 according to my parts book. The 25 Cycle is a different part number 3753
Posts: 327
Threads: 30
Joined: Jul 2017
City: Hay Lakes, Alberta,Canada
According to the "Complete Replacement Parts List" , Bulletin #39, the 3752 is indeed the 60 cycle transformer, but no suffix listed. I'd say it may be a different run of transformer, and there may have been an adjustment in the manufacturing process, or they used a different form shared with another transformer they were now producing. Should work fine.
Posts: 70
Threads: 17
Joined: Jan 2006
City: Newbern
State, Province, Country: Tennessee
Thank you. Was thinking it was an earlier version. the the T versus the J suffix. going to install.
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand
State, Province, Country: Indiana
I may be wrong, but I believe T = Thordarson and J = Jefferson. While Philco made a lot of their own parts, I don't think they made their own power transformers. At least not early on.
--
Ron Ramirez
Ferdinand IN