Re: Static Spark Gap

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

In a message dated 4/24/03 4:35:24 PM Eastern Daylight Time, 
tesla-at-pupman-dot-com writes:

Gregory,

The gap could fire multiple times per presentation but such operation
causes inefficient operation and draws heavy current.  Peter (Robert?)
Jameson wrote about this in a paper he presented some time ago.

It's partially for this reason that coils often run very poorly when the rotary
is slowed down too much.  The dwell time should not be too long.

The rotary limits the break rate if the rotary and the TC system are
working as they should.  However, the break rate of an async rotary is
usually lower than the presentation rate because presentations
near the zero crossing may not fire.

John


>Original poster: "Gregory Hunter by way of Terry Fritz 
><teslalist-at-qwest-dot-net>" <ghunter31014-at-yahoo-dot-com>
>
>I've been following this thread, and something one of
>the posters said is bugging me. Somebody mentioned
>that the only way to get control over break rate is to
>go to with a rotary. Am I to assume then, that an RSG
>only fires ONCE on each presentation of the
>electrodes? I think this is only true for a LTR system
>using a SRSG. What about the case of a pole xfmer, PT,
>or MOT bank feeding a smaller-than-resonant cap?
>Compared to the speed of one fire/quench cycle, the
>flying electrodes are really crawling along. In a good
>quenching system (like a sucker gap in series with the
>RSG) with sufficiently stiff charging current, we
>could have multiple firings per electrode
>presentation. Now the true break rate is an unknown
>again, unless one has proper test equipment! Just
>using an RSG doesn't really nail down the break rate,
>does it? The thing could be firing in burst mode every
>time the electrodes line up.
>
>Cheers,
>
>
>=====
>Gregory R. Hunter
>
>http://hot-streamer-dot-com/greg
>