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RE: phase shifter instead of variac use

Original poster: "Black Moon" <black_moons@xxxxxxxxxxx>

I think the problem comes from the fact a triac is either full on or off, and you need actual current limiting to prevent the pig from looking like a near dead short when the secondary arcs

From: "Tesla list" <tesla@xxxxxxxxxx>,")"@pupman.com (by way of Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>)
To: tesla@xxxxxxxxxx
Subject: phase shifter instead of variac use
Date: Tue, 04 Jan 2005 15:32:14 -0700

Original poster: Dieter.Boeckeler@xxxxxxxxxxx ( =?iso-8859-1?Q?"Dieter_Böckeler"?
Hi all,
an idea:
is it possible to use a big phase shifter with current regulator for teslacoils.
for example:
A semiconductor module with two thyristors (called powerblock)
in a W1C circuit.Such powerblocks can easily handle a lot of current
(eupec TT95N12=95A 1200V).The moduls with cooling and
R-C-safety circuit are very compact and the unit with controller weight a lot less! than a variac with 95A.
O.k.I don´t need 95A but these modules are the smallest available for me.(no cost)
In the company I work we use those circuits like
W1C (1-phase primary shifter),W3C(3-phase primary shifter)
to regulate the primary current of high current transformers.
best regards