Re: [TCML] Secondary and Primary Assistance

["Mike H" <mike8675309@xxxxxxxxx>]

So much information here, I just love it.  I'll check around locally
and see what I can find.  I've been looking at forms for the
secondary.  I see I have a distributor in town for EIS Industrial
Supplies and they are a Dolphs reseller so I can likely get something
local. If not I'll be in touch.

Still deciding on a secondary form.  PVC is easy but It looks like I
do have a couple local suppliers available for Acrylic or polystyrene
tubes.  Got some calling to do next week and find out what is truly
available for someone in small quantities.

On Wed, Mar 19, 2008 at 11:21 AM, DC Cox <resonance@xxxxxxxxxxxx> wrote:
> Dolph's AC-43 is the best you can use.  It is especially formulated to use
>  in power transformer winding and has a high punture voltage.  Also excellent
>  anti-tracking properties which is good engineering practice for HV coils
>  operating at RF frequencies.  It is also excellent for sealing out any
>  moisture.
>
>  I usually gently heat the windings for 3 hrs with 3 heat lamps, and then
>  apply the varnish while the coil is still warm.  The gentle heat drives out
>  any moisture prior to winding.  Use a thermometer to set temp approx 150
>  degrees F. for 2-3 hrs.  Another good idea is to preheat the coilform for 30
>  minutes just prior to winding --- drives out a moisture.
>
>  I carry it in 5 gallon cans and can usually spare a quart if you need some.
>  Contact me off-list.
>
>  Dr. Resonance
>
>
>
>
>  On 3/19/08, Mike H <mike8675309@xxxxxxxxx> wrote:
>  >
>  > Bart,
>  >
>  > On the question of the coating that you discussed, Is there an
>  > electrical, or other performance behavior that has you preferring
>  > marine varnish?  Or is it just a question of for the application, you
>  > want to make sure you coat things fully, and thus based on price, the
>  > marine varnish simply makes more sense with little to no downside?
>  >
>  > Thanks
>  > Mike
>  >
>  > >  Considering our outer layer "coatings" (and I personally don't like
>  > >  polyurethanes but prefer marine spar varnish which to me is the best
>  > >  coating for the price), the coating itself protects outside issues that
>  > >  can cause turn to turn shorts, but the turn to turn voltage issue is
>  > >  dependent on the wire insulation. I've never heard mention a problem
>  > >  with that.
>
>
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