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Re: Transformer Protection?
From: D.C. Cox[SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: Monday, December 01, 1997 3:56 PM
To: Tesla List
Subject: Re: Transformer Protection?
to: Alfred & Jim
The intended use of an automobile ignition coil is to fire a spark across a
gap of .040 inches or less. Firing across a 1/2 to 1 inch airgap is quite
another matter for the coil. Many coils produce higher than standard
potentials as they have to fire under high cylinder pressures,
never-the-less, producing a longer arc with the coil will require some
protection. We made several such systems back in the late 60's and the
coils didn't last too long without some protection from spikes.
DR.RESONANCE-at-next-wave-dot-net
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-poodle.pupman-dot-com>
> Subject: Re: Transformer Protection?
> Date: Saturday, November 29, 1997 7:37 PM
>
>
> From: Alfred A. Skrocki[SMTP:alfred.skrocki-at-cybernetworking-dot-com]
> Sent: Saturday, November 29, 1997 5:17 AM
> To: Tesla List
> Subject: Re: Transformer Protection?
>
> On Thursday, November 27, 1997 12:14 PM James Quinney
> [SMTP:jquinney-at-hotmail-dot-com] wrote;
>
> > I have just built a HV power supply out of a 12V engine ignition coil.
I
> > haven't fired it yet however, because I think it may blow when the arc
> > is created as it has no protection against short circuiting which will
> > happen when the arc is made across the spark gap.
>
> James, stop and think a little. In it's intended usage an automobile
> ignition coil is designed to take the arcing because that what it's for -
> to fire an arc across each spark plug in the engine. You don't need any
> protection the coil is designed to take it.
>
> Sincerely
>
> \\\|///
> \\ ~ ~ //
> ( -at- -at- )
> -----o00o-(_)-o00o-----
> Alfred A. Skrocki
> Alfred.Skrocki-at-CyberNetworking-dot-com
> .ooo0 0ooo.
> -----( )---( )-----
> \ ( ) /
> \_) (_/
>
>
>