Re: Home Made Variac

• To: tesla-at-pupman-dot-com
• Subject: Re: Home Made Variac
• From: "Bill Noble" <william_b_noble-at-email.msn-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Fri, 04 Feb 2000 17:03:42 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

consider a variable inductor - much easier to make - wind a bunch of turns -
say 100, on a 2 or 3 inch piece of plastic pipe, then slide an iron core in
our out of the pipe to change inductance - thsi will regulate the current.


----- Original Message -----
From: Tesla List <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Thursday, February 03, 2000 3:22 PM
Subject: Home Made Variac


> Original Poster: "Michael Novak" <Acmnovak-at-execpc-dot-com>
>
>
>      I can't afford to buy a variac but I need some way to vary the line
> voltage... So, I decided to build one. I'm pretty sure I can get my hands
on
> some 10 guage magnet wire, however, I still need to find a suitable core.
Isn't
> a variac basically a bifliar-wound 1:1 turns ratio transformer? If so,
does
> anyone have some sort of formulas on the subject?  What would be the
> disadvantages of having a core which is not laminated such as the kind
found in
> transformers?
> Any thoughts?
>                                                             -Michael
>
>
>

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