Re: Still more H2 Thyratron

• To: tesla-at-pupman-dot-com
• Subject: Re: Still more H2 Thyratron
• From: FutureT-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sun, 07 Nov 1999 14:45:57 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

In a message dated 99-11-06 15:51:14 EST, you write:

<<  I've got to ask, what are all the coilers using H2 Thyratron devices for?
 
> Originally my application was for a high-speed charge transfer switch, I've
> read that these tubes are real performers but am still not entirely positive
>on how to use them.  The Thyratron device is favored over any silicon
>devices due mainly to their abilities to withstand high-voltages (silicon
>devices are generally limited to about 1,000V) and the short pulse duration
 >possible.
 
 > I just picked up a set of 5C22 (Sylvania in this case), still looking for
> pin-out and example schematics.
  
 >Joel H.
  >>

Joel,

The only coiler I've heard of who has used a H2 thryratron in a TC is
Richard Hull of the TCBOR, are there others?.  He used the 
H2 unit in place of a spark
gap in a magnifier TC.  A limitation of the H2 unit is it can only pass
one polarity, so he left it on for only 1/2 RF cycle, which did not allow
for a complete transfer of energy from primary to secondary.  Richard's
plan was to use two H2 units back-to-back, and switch them off and
on as needed to pass both polarities,  but he didn't get around to 
trying that.  Another option would be to use a H2 unit with a suitable
diode cross-connected across it to pass the other polarity.

Richard shows his shematic in a TCBA newsletter article.

Cheers,
John

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