40MHz Spark Gap Behavior
From: terryf-at-verinet-dot-com [SMTP:terryf-at-verinet-dot-com]
Sent: Tuesday, April 14, 1998 9:46 PM
To: Tesla List
Subject: Re: 40MHz Spark Gap Behavior
>From: D.C. Cox [SMTP:DR.RESONANCE-at-next-wave-dot-net]
>Sent: Monday, April 13, 1998 10:15 PM
>To: Tesla List
>Subject: Re: 40MHz Spark Gap Behavior
>What is the value of the capacitor you are using for these tests? I
>presume this is a low inductance pulse duty cap?
The primary cap is composed of ten 1.72nF 30kV "doorknob" caps made
by TDK. I don't know much about their ESR but they are series 4001 types.
Couldn't find any info about them. Some doorknobs have high ESR and some
are very good depending on how much you pay for them. I got mine free :-)))
The total capacitance measures at 16.94nF, 30kV. The caps are mounted
between two thin brass plates. It should have very good RF performance
depending on what material the ceramic in the caps is made from.