Re: Sync Gap Timing (was Triggered Gaps)

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

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

Depends a bit on the source impedance (i.e. the NST)... there's a bit(!) of
inductance, so the current (which is what charges the capacitor...) lags the
voltage.  You want to fire at the voltage peak on the primary capacitor,
which is going to be later than the voltage peak on the line.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, November 16, 2002 8:04 PM
Subject: Sync Gap Timing (was Triggered Gaps)


 > Original poster: "Bill Vanyo by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<vanyo-at-echoes-dot-net>
 >
 > Tesla list wrote:
 >  >
 >  > Original poster: "Jeremy Scott by way of Terry Fritz
 > <twftesla-at-qwest-dot-net>" <supertux1-at-yahoo-dot-com>
 >
 >  > Seems easy enough to build, has anyone made one, if
 >  > so, how did you drive the third electrode such that
 >  > it promoted gap breakdown at the right times?
 >  > (peak and troughs of the NST AC sinewave.)
 >
 > This has been asked before, but it keeps coming up, and always bugs me:
 > Do you want the gap to fire at the AC peaks and troughs, or at the zero
 > crossings?
 >
 > Seems to me you would want it at the zero crossings.  Between two zero
 > crossings, there is a rising, then falling, but always positive (or
 > negative) charge being applied.  Between a peak and a trough, there is a
 > positive then negative charge applied, cancelling each other.  No?
 >
 > (I'm assuming 120 bps)
 >
 > -  Bill  V.
 >
 >