[AMRadio] Seeking advice on testing modulation transformers

Mark Foltarz Foltarz at rocketmail.com
Thu Sep 21 09:47:00 EDT 2006


  Yes, a good point.

  I also found some other transformers of interest including four  nos RCA
transformers that use PP parallel 807 for  an audio amplifier  application.

 Been wanting to build a nice tube amp for a while. Guess I should make sure
these are nice and dry. 

  So how would you dry out old transformers?


--- "Todd, KA1KAQ" <ka1kaq at gmail.com> wrote:

> On 9/20/06, Mark Foltarz <Foltarz at rocketmail.com> wrote:
> >   I am sure the following has happened to all of us.
> >
> >   You build a transmitter or modulator using a transformer that you have
> had
> > around for years.
> >
> >   You then apply power only to find  a short to case or worse on the
> cherished
> > modulation transformer.
> Mark -
> Dry them out well, first. Bake them, heat them up with voltage, use
> lightbulbs, whatever flips your switch. Most iron sits unused for
> years, as you point out, until that specific project requires it. They
> sit around in basements, garages, porches, and other places where they
> can suck up moisture. And they do suck it up, like a big sponge.
> So, not to discount the other postings, but before you do anything
> else, I'd dry them out first. Then test and go forward from there.
> ~ Todd  KA1KAQ
> ______________________________________________________________
> AMRadio mailing list
> List Home: http://mailman.qth.net/mailman/listinfo/amradio
> Partner Website: http://www.amfone.net
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio at mailman.qth.net

Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 

More information about the AMRadio mailing list

This page last updated 21 Feb 2018.