Re: Spark Gap (fwd)

---------- Forwarded message ----------
Date: Sat, 23 May 1998 21:26:52 -0700 (PDT)
From: "Edward V. Phillips" <ed-at-alumni.caltech.edu>
To: tesla-at-pupman-dot-com
Subject: Re: Spark Gap (fwd)

"If you trigger at less than Vmax, conceivably you could get several charge,
discharge cycles in a mains half cycle. Although, I haven' t considered
whether the gap would actually shut off quickly enough to allow this. Some
sort of Resonant charging would do this though."

	Standard operating condition for a short gap, easily
verified by experiment or simulation.  As the gap is lengthened
(and assuming transformer doesn't fail) it is possible to get
a single spark for every several half-cycles if the primary
tank capacitance is close to the resonant value.  An easy
way to observe this is to use a variac in the primary and crank
the voltage up just to the point where the gap breaks down.