Re: Low voltage sparkgaps for ignition coil driver...

• To: tesla-at-pupman-dot-com
• Subject: Re: Low voltage sparkgaps for ignition coil driver...
• From: RWB355-at-aol-dot-com (by way of Terry Fritz <terryf-at-verinet-dot-com>)
• Date: Sun, 22 Nov 1998 07:13:15 -0700
• Approved: terryf-at-verinet-dot-com

Hi James, all

 Original Poster: "James" <elgersmad-at-email.msn-dot-com> 
 
     I'm surprized that you didn't think of using just a spark gap that was
 rated, or just gapping a spark plug 20v/mil then run it through the primary.
 Dielectric of air = 20volts to the millimeter.
 
Oops! I think you made a few mistakes there.

First of all a (american unit) mil is not eqal to 1mm. A mil is equal to
0.001" The dielectric strength of air is 20k(!!)V per mm not 20v/mil.
Otherwise you wouldn´t need 20kv for a spark to jump across the spark plug
(you could just power it from the 300-600 volt primary voltage of the igntion
system) in your car.

sparkling greets from germany,
Reinhard
 

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