Re: Dimmer as a Variac.

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "william_b_noble by way of Terry Fritz <twftesla-at-qwest-dot-net>" <william_b_noble-at-email.msn-dot-com>

if you were to contact ford electronics (ask for Scott, tell him that bill
noble referred you), they have two or three very high amperage GTOs (2000
amps? it's some huge number) that could be very useful for this
application - mounted to a very large heat sink, with some drive and snubber
circuitry - seem new/surplus, not used trash.  they have a small web
presence at www.fordel-dot-com


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, July 11, 2001 7:23 PM
Subject: Re: Dimmer as a Variac.


> Original poster: "David Sharpe by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<sccr4us-at-erols-dot-com>
>
> Marc
> I''ve started modeling a totally new design power electronic circuit that
> will emulate a variac, with major improvements of dynamic current limiting
> (hopefully), limited voltage regulation, and instantaneous over current
trip
> protection in the event of something downstream going BURAPPPT!!!
> Circuit costs seems about right too, ~$200 for a 60A controller.