Re: Spark Gap Replacements
In a message dated 97-01-04 01:31:47 EST, you write:
<< From: Jim Fosse <jim.fosse-at-bdt-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: Spark Gap Replacements
> >Date: Wed, 01 Jan 1997 10:06:26 -0800
> >From: Bert Hickman <bert.hickman-at-aquila-dot-com>
> >To: tesla-at-pupman-dot-com
> >Subject: Re: Spark Gap Replacements
> [snipletto for chip, et. al.]
> >Thanks for the update! This is an area I'd like to further explore when
> >time permits, though probably with power MOSFETS or IGBT's instead of
> >straight bipolars, for the same reason - investigating quenching. In
> John and Bert,
> Don't forget that a reversed biased transistor ( Collector
> Emitter reversal; not base reversal), unlike a tube (cathode emission
> problem) or mosfet (reverse diode conduction on problem), exhibits a
> gain of about 0.8! with a very low drop of (say) 20 millivolts.
> Thanks! Seems I remember that this configuration had low voltage
>withstand capability (but made for excellent DC restorer circuits).
>-- Bert --
The transistor I used (TV horizontal output type), has a built-in damper
diode; probably protecting the transistor?