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Re: Bumping above 40%
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To: tesla-at-grendel.objinc-dot-com
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Subject: Re: Bumping above 40%
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From: mrbarton-at-ix-dot-netcom-dot-com (Mark Barton)
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Date: Wed, 20 Mar 1996 21:04:30 -0800
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>Received: from ix12.ix-dot-netcom-dot-com (ix12.ix-dot-netcom-dot-com [199.182.120.12]) by uucp-1.csn-dot-net (8.6.12/8.6.12) with ESMTP id WAA22921 for <tesla-at-grendel.objinc-dot-com>; Wed, 20 Mar 1996 22:05:03 -0700
Jim,
If the bumping you are referring to is the same thing I have
experienced at higher power levels, the explanation is a simple one.
You are drawing power arcs. That is, the gap is doing a poor job of
quenching at high power levels and the transformer is briefly arcing
through the primary system.
You can try a number of things:
Increase the gap size.
Change to a more sophisticated gap (sectioned and/or rotary).
Add inductance and/or resistance to the low voltage side of the
transformer.
Play with the coupling. Sometimes that fixes it.
Richard Hull recommends running with a small amount of resistance in
the mains circuit. He claims it "smooths out the rough spots" in the
coil's performance. By this I'm sure he means those bumpies.
Zap,
Mark