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Power Xmfr. Voltages
3/20/2001 4:08:56 PMChris C.
General question, but I'm applying the answer to an Atwater Kent
60.

The transformer has a center-tapped high voltage winding
to supply B+ to the rectifier tube (80) plate. The 80 usually
uses something like 250 V I think. I need to replace this
transformer, and may have to settle for one that is not
an exact replacement since these are getting scarce. Say I go to
oldradioparts.com and look at the transformer listings.
Would the proper transformer be listed as 250-0-250 VAC or
125-0-125 VAC?

3/20/2001 7:19:35 PMNorm Leal
Hi Chris

You would need 250-0-250 volts. Are you sure the old transformer is bad? Try operating the radio without #80 tube. If tubes light and transformer doesn't overheat it should be ok.

If it has to be replaced you also need a 5 volt @ 2 amp & 2.5 volt around 13 amp windings.

Norm

: General question, but I'm applying the answer to an Atwater Kent
: 60.

: The transformer has a center-tapped high voltage winding
: to supply B+ to the rectifier tube (80) plate. The 80 usually
: uses something like 250 V I think. I need to replace this
: transformer, and may have to settle for one that is not
: an exact replacement since these are getting scarce. Say I go to
: oldradioparts.com and look at the transformer listings.
: Would the proper transformer be listed as 250-0-250 VAC or
: 125-0-125 VAC?

3/21/2001 9:52:15 AMChris C.
The primary winding does not have continuity and
there are no output voltages on any of the secondary
windings, so I figured the primary was open.

It's a tall order, finding this particular combination
of outputs these days. Antique Electronic Supply has
a replacement for $79. That's more than the chassis
is worth! It's like fixing up an old car: you really
have to love it, or get lucky and find a replacement
gathering dust that you can pick up for cheap.

Me, I love it.

Thanks for all the great advice.

3/21/2001 10:15:41 AMNorm Leal
Play Things of Past, oldradioparts.com , may have the correct transformer and at a lower price. You will need to look through a long list.

Norm

: The primary winding does not have continuity and
: there are no output voltages on any of the secondary
: windings, so I figured the primary was open.

: It's a tall order, finding this particular combination
: of outputs these days. Antique Electronic Supply has
: a replacement for $79. That's more than the chassis
: is worth! It's like fixing up an old car: you really
: have to love it, or get lucky and find a replacement
: gathering dust that you can pick up for cheap.

: Me, I love it.

: Thanks for all the great advice.



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