Re: MOT power supply

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

In a message dated 11/15/02 11:23:50 PM Eastern Standard Time, 
tesla-at-pupman-dot-com writes:

Mark,

This is a question that arises often on the list.  The general rule
is that transformers cannot be over-volted to more than about
15% to 20% before saturation becomes too much of a problem.
Transformers require a certain number of primary turns for a
certain core size for a certain voltage.  MOT's have minimal
core sizes and numbers of turns, so they should not be
over-volted at all.  Some special industrial MOT's may perhaps
tolerate some over-volting, but never to double their rated voltage.

You can connect two MOT's primaries in series and feed 240V to
the series combo.  The secondaries can be placed in series too
for double the output voltage of one MOT.  The midpoint should
be grounded.

MOT's are high current devices and are especially lethal if one
is not careful.  Of course all Tesla transformers can be lethal.

John


>Has anyone built an MOT power supple with an imput voltage of 240v  with
>transformers that came from a 110 volt microwave. Im assuming that the
>primary windings could easily handle the higher voltage, but i thought id
>ask before i hooked it up.
>
>Thanks a lot
>Mark
>