RE: secondary coil form materials

["Lau, Gary" <Gary.Lau-at-compaq-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

The firing rate of a static gap is in no way related to the AC mains
frequency.  This is a common misconception.  If the energy in one mains
half-cycle is insufficient to charge the cap to Vgap-breakdown, this energy
is not wasted.  Energy will be added from the next half-cycle, charging in
the opposite direction, and the gap will fire as soon as Vgap is reached.  I
have some simulation waveforms demonstrating this on my web site at:
http://people.ne.mediaone-dot-net/lau/tesla/gapsim.htm
<http://people.ne.mediaone-dot-net/lau/tesla/gapsim.htm> 

Regards, Gary Lau
Waltham, MA USA

		-----Original Message-----
		From:	Tesla list [mailto:tesla-at-pupman-dot-com]
		Sent:	Friday, July 14, 2000 7:02 PM
		To:	tesla-at-pupman-dot-com
		Subject:	RE: secondary coil form materials

		Original poster: "Richard Barton"
<richardbarton-at-caving5.freeserve.co.uk> 

		if it's a static gap, would it sync itself, if the gap is
adjusted so it
		fires
		easily?
								Richard
Barton


		-----Original Message-----
		From: Tesla list [mailto:tesla-at-pupman-dot-com]
		Sent: Friday, July 14, 2000 11:31 PM
		To: tesla-at-pupman-dot-com
		Subject: Re: secondary coil form materials


		Original poster: "Duke McMullan N5GAX" <n5gax-at-rt66-dot-com>

		----- Original Message -----
		Subject: Re: secondary coil form materials
		> Original poster: FutureT-at-aol-dot-com
		>
		> In a message dated 7/9/00 10:46:22 PM Pacific Daylight
Time,
		tesla-at-pupman-dot-com
		> writes:
		>            . . .
		> . . .  Most TC books are riddled with errors and myths.
		> My coil can be seen at:
		>    http://hometown.aol-dot-com/futuret/page1.html

		John, I examined your page (Nice!), but you confused me.
You wrote:

	
---------------------------------------------------------------------------
		--------------------------
		I've done a comparison of high and low breakrates for low
powered coils up
		to 1500 watts or so, and it appears that the low breakrates
(around 120 bps)
		are best.  When running NST powered TC's, it often helps to
use a
		synchronous rotary spark gap running at 120 bps, although
folks have also
		obtained excellent results using single air blast static gap
arrangements.
		In any case, non-sync rotaries should not be used with NST's
because it
		tends to destroy them.
	
---------------------------------------------------------------------------
		--------------------------

		I don't understand.  Unless I'm seriously missing something,
a "static" gap
		_will_ break at 120 b/sec, at least on a 60 Hz power line.
Is the ability
		to adjust the phase between the breaks and the power-line
zero-crossings the
		relavant issue?

		                        Puzzled,
		                                  d

		PS -- Nice toroids!  I'll remember you as a source.

		d
		--
		                 <Bzzzz!> <Zap!>   Wake up and smell the
ozone!   <Crackle!>
		         Duke McMullan n5gax nss13429rl(fe) (505)255-4642
n5gax-at-rt66-dot-com