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RE: Best location for spark gap
Original poster: "Lau, Gary by way of Terry Fritz <teslalist-at-qwest-dot-net>" <Gary.Lau-at-hp-dot-com>
If I may be the devil's advocate for a moment...
I fully agree that when using NST's,0 having the gap across the power
supply lowers the high frequency stresses applied to the NST.
But when using a power supply that is not current limited - a distribution
or potential transformer, I wonder if the placement of the gap affects the
ballasting requirements? I've never used such a power supply. Has anyone
who has tried it both ways?
Regards, Gary Lau
Original poster: "J. B. Weazle McCreath by way of Terry Fritz
At 05:49 PM 04/01/03 -0700, you wrote:
>Original poster: "Nir Wingarten by way of Terry Fritz
>I've just finished 'studying' some old TC plans and
>noticed the spark gap's location is diffrent in every
>one(usually before or after capacitors), the question
>rasied is which location is better?
>Nir(NOT NEAR) Weingarten
I believe you'll find that the thinking of today is to put
the gap across the power source, be it a MOT, NST, PDT, or
other type of transformer. It offers some protection from
any "spikes" that may want to find their way back into the
power source from the primary tank circuit.
73, Weazle, VE3EAR/VE3WZL
Listening: 147.030+ and 442.075+
Web site: http://www.hurontel.on.ca/~weazle