Re: Motor driven variac & secondary wire

To: tesla-at-poodle.pupman-dot-com
Subject: Re: Motor driven variac & secondary wire
From: Tesla List <tesla-at-stic-dot-net>
Date: Fri, 21 Mar 1997 01:56:19 -0600
Approved: tesla-at-stic-dot-net

Subject: 
        Re: Motor driven variac & secondary wire
  Date: 
        Thu, 20 Mar 1997 11:27:52 -0700
  From: 
        "DR.RESONANCE" <DR.RESONANCE-at-next-wave-dot-net>
    To: 
        "Tesla List" <tesla-at-pupman-dot-com>


To: Steve Falco

We tested various types of enameled magnet wire for dielectric breakdown
at
RF frequencies.  We ran out tests at 500 KHZ at 0-15 KV and used a scope
to
check for losses (corona formation).  Best results were with Beldon
Polythermalize -- a 200 degree C. wire.  It is extremely durable and we
use
it in all our small coil systems (400 KV or less).  It is available on
special order on 10 or 25 lb. spools.

DR.RESONANCE-at-next-wave-dot-net


----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-poodle.pupman-dot-com
> Subject: Re: Motor driven variac & secondary wire
> Date: Thursday,March 20,1997 5:40 PM
> 
> Subject: 
>            Re: Motor driven variac & secondary wire
>       Date: 
>            Thu, 20 Mar 1997 05:43:27 -0500
>       From: 
>            Steve Falco <sfalco-at-worldnet.att-dot-net>
>         To: 
>            Tesla List <tesla-at-pupman-dot-com>
> References: 
>            1
> 
> 
> > BTW, I asked the local motor shop for some double formvar wire. They
> > told
> > me it isn't made anymore but they have nylon coated wire. Will the
nylon
> > hold up as well as the formvar? (Assuming that it and the coil form are
> > coated with a sealer also) The stuff is $7.00/lb in 1 or 10 pound
> > spools.
> > (they even have 100 lb spppls!) Is this a good price?
> 
> Formvar is still made.  It is used for oil-filled applications only, so
> it is tough to get in small quantities direct from the supplier (I just
> tried :-).
> 
> I bought a 10 pound spool of #22, insulated with polyurethane, then
> overcoated with nylon (trade name is Nyleze).  It cost about $40 from
> EIS (800)-377-4999.  I have not fired the coil yet - still building -
> but I expect it to work fine.
> 
>         Steve Falco
>         sfalco-at-worldnet.att-dot-net