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From: David Harmon
Newsgroups: sci.electronics.design
Subject: Transformer with magnetic shunt?
Organization: indexed sequential
Reply-To: David Harmon
Message-ID: <3e1d4d9e.883229@newstest2.earthlink.net>
X-Newsreader: Forte Agent 1.91/32.564
Date: Tue, 07 Jan 2003 03:51:57 GMT
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NNTP-Posting-Date: Mon, 06 Jan 2003 19:51:57 PST
I am modifying a transformer from an old microwave oven in order to
build a spot welder similar to the recent discussion in the "welded
transformer" thread. My transformer had the primary and secondary
side by side, so it was relatively easy to cut and remove the
secondary winding.
Between the primary and the secondary windings, there are some
stacks of laminated iron that I did not expect to see. It looks to
me like they would shunt some of the magnetic flux away from the
secondary winding and prevent the full power from the primary from
being coupled into the secondary. Isn't that a bad thing? What is
the purpose of those bits?
Should I leave them there or knock them out before I put in the new
1-turn secondary winding?
Picture in alt.binaries.schematics.electronic under the same subject
heading.