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ok design?
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From: Bill Lemieux [SMTP:gomez-at-netherworld-dot-com]
Sent: Thursday, March 05, 1998 2:06 PM
To: Tesla List
Subject: Re: ok design?
> > I'm trying to build my first coil...this is the design I plan to use;
> > powersupply: auto ignition coil powered by a motorcycle battery, I estimate
> > the auto coil to be about 45 watts, 30kv 1.5 ma. frequency: adjustable from
> > 1 Hz- 2khz
>
> I'll believe the 45 watts when I see (measure) it! I've never seen an
> automabile ignition coil yield over 25 watts!
For an ignition coild to draw 45 watts would only require about 3.5 amps
at the
13 volts or so it is designed to run on. Remember, an ignition coil has
a very
low resistance primary and will cheerfully draw many times the design
current
if it were not for the ballast resistor. On the other hand, it will
also
cheerfully burn itself out if you try to run it for long at a high duty
cycle
without the ballast resistor.
-Gomez
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