RE: short circuit accross the spark gap

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

Original poster: "Luke" <Bluu-at-cox-dot-net> 

How would the terry filter disconnect the nst?
There is a straight shot to it through the resistors.  The mov's
shouldn't fire.  The caps may affect it some but...........?

Thanx

Luke Galyan
Bluu-at-cox-dot-net
http://members.cox-dot-net/bluu

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Thursday, March 11, 2004 10:26 AM
To: tesla-at-pupman-dot-com
Subject: Re: short circuit accross the spark gap

Original poster: robert & june heidlebaugh <rheidlebaugh-at-desertgate-dot-com>


YES, with a dc coil the supply tends to power arc so a small coil is
used to
disconect the supply from the spark gap/capacitor. This requires  only
about
3 u Sec of time or a small value coil. The TERRY filter also acts the
same
way to disconnect the NST whem the gap fires.
     Robert   H
-- 


  > From: "Tesla list" <tesla-at-pupman-dot-com>
  > Date: Thu, 11 Mar 2004 07:14:51 -0700
  > To: tesla-at-pupman-dot-com
  > Subject: short circuit accross the spark gap
  > Resent-From: tesla-at-pupman-dot-com
  > Resent-Date: Thu, 11 Mar 2004 07:26:32 -0700
  >
  > Original poster: "Daniel Ullfig" <DUllfig-at-sbcglobal-dot-net>
  >
  > Hey everyone,
  >
  > In his first patent on the generation of high frequencies, Tesla used
a
  > rotary "circuit controller", kind of like a DC motor collector. In
fact, the
  > controller was turned by a DC motor. Anyways, if you study the patent
  > carefully, you see the controller actually disconnects the charging
circuit
  > from the capacitor, before connecting it to the primary. But in spark
gap
  > systems, the spark gap actually becomes a short circuit accross the
supply
  > line when it fires.
  >
  > Has anyone given some thought on disconnecting the supply line from
the
  > capacitor somehow before the spark gap fires? how much energy is
wasted by
  > this short?
  >
  > Dan Ullfig
  > Harbor City, CA
  >
  >