[TCML] 400 hz variacs

[HomerLea at aol.com]

These seem just as heavy as 120v 1.3 amp 60hz ones. What I don't get is how 
some fixed transformers are rated, for example, at 47hz to 400 hz; not 
uncommon for military transformers. Guess I should have been an electrical 
engineer instead of chemist.
Jim

In a message dated 12/11/2010 8:03:29 PM Pacific Standard Time, 
ka1bbg at myfairpoint.net writes:

> 
> 
> ok to use as inductors, but too little iron for 60 hz operation. brian f.
> happy holidays
> ----- Original Message ----- 
> From: <HomerLea at aol.com>
> To: <tesla at pupman.com>
> Sent: Saturday, December 11, 2010 4:50 PM
> Subject: [TCML] 400 hz variacs
> 
> 
> >I have a bunch of 208v 1.3 amp and some larger variacs, all 400 hz. Can
> >these be used as variacs at derated in voltage on 60 hz or are they just 
> >good
> >for ballast?
> >Jim Heagy
> >
> >homerlea at aol.com
>