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[AMPS] SB1000 parasite question for Tom and Rich+

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Subject: [AMPS] SB1000 parasite question for Tom and Rich+
From: philk5pc@tyler.net (Phil Clements)
Date: Sat, 5 Aug 2000 09:11:50 -0500
>If "tinks" in a vacuum can be heard (ie. de-wiskering a vacuum cap), then
>big bangs in a vacuum should also be heard.
>
vac. cap. tinks can barely be heard.  Big bangs are loud.  The
accompanying flash comes from the HV circuitry.

The tink can barely be heard because it is a current limited arc.
Does anyone care to sacrifice a vacuum variable for the good
of the cause and hang it across a big amp power supply with a
tape recorder running? You will loose a good cap, but you will
be made famous here on the reflector in hundreds of references
to your test.

IMO, Tom is right and Rich is right. The loud bang is caused by
the heating of the air from the external arc(s) in the tank circuit/power
supply. This covers up any internal arc noises by many DB.

Tesla coils and welders make big arcs, but since the current is
controlled, not too much noise accompanies them. This can
be duplicated in RF amplifiers with the proper glitch protection
devices.

(((73)))
Phil, K5PC


-  Rich..., 805.386.3734, www.vcnet.com/measures.
end


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