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Help modifying a variac?
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To: "'Tesla List'" <tesla@pupman.com>
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Subject: Help modifying a variac?
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From: Tesla List <tesla@stic.net>
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Date: Fri, 10 Apr 1998 23:17:49 -0500
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Approved: tesla@stic.net
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From: Alan Sharp [SMTP:AlanSharp@compuserve.com]
Sent: Friday, April 10, 1998 5:20 AM
To: INTERNET:tesla@pupman.com
Subject: Help modifying a variac?
>Message text written by INTERNET:tesla@pupman.com
>Does anyone have directions on modifying and using a variac (cutting the
>core) as a current limiter? Also, what size variac would be needed for
>a 2kva potential transformer.<
Brain,
I use a variac as is, but in series with a couple of microwave oven
transformers with the secondarys shorted out. It holds my current
to about 10A - details and pictures on my web site. The variac alone
unmodified won't work because it saturates but the transformers
include current limiting shunts.
Have fun,
Alan Sharp UK