[Amps] Noisey Transformer

k7rdx k7rdx@earthlink.net
Sun, 10 Mar 2002 17:15:33 -0800


Any of the better electric motor rewind shops can vacuum impregnate the
xfmr. and it will probably be as good as new. The process: transformer is
submerged in heated varnish in a vacuum tank, process usually takes 24 hrs.
plus cool down/dry time takes a few days. Iv`e had several of my own done
with outstanding results. Jim.
----- Original Message -----
From: Richard <2@mail.vcnet.com>
To: <w3nr@vol.com>; AMPS <amps@contesting.com>
Sent: Sunday, March 10, 2002 2:47 PM
Subject: Re: [Amps] Noisey Transformer


>
>
> > OK, I need some help.....Clipperton L decent shape, BUT.....the
transformer
> >has an audible hum....even loafing. As you draw any amount of current the
> >hum
> >gets louder. I tightened the lamination screws, still hums. What next ??
A
> >bath in varnish ?  Any ideas ??   Thanks 73
> >
> I would try potting the windings in laminating resin and varnishing the
> laminations.  Details are on my Web site.
>
> cheers, Ed
>
> -  R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
> www.vcnet.com/measures.
> end
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps