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Re: ignition coil for high voltage source
Many Thanks to all that have cleared this up with me.
I was a little mislead, now I understand much better.
Make sure you use that EMI filter. Sounds like this
could make a really good jacobbs ladder. Much better
than with the 555 timer and the lower voltage. I must
try it for fun now.
Does anybody have the answer to how much voltage we
will be getting off the ignition coil with this setup?
----- Original Message -----
From: Tesla List <tesla-at-pupman-dot-com>
Sent: Thursday, June 08, 2000 9:35 AM
Subject: Re: ignition coil for high voltage source
> Original Poster: "Ed Phillips" <evp-at-pacbell-dot-net>
> Tesla List wrote:
> > Original Poster: "Bill Parn" <parn-at-starpower-dot-net>
> > Hi Grayson and Coilers,
> > I really like the simplicity of this design. I know the dimmer
> > switch is going to give the spikes of voltage necessary to get
> > the ignition coil to operate, however I was wondering do we need
> > a resistor of some sort to get the 120VAC spikes down more
> > in the range of 18Volts or less to prevent from destroying the
> > ignition coil?
> > Cheers,
> > Bill Parn
> No resistor, but a fuse might be a good idea in case the series
> capacitor shorts, followed by a not-unlikely catastrophic failure of the
> dimmer. I have been playing around with a dual GM high-energy coil
> driven with nothing more than a 3 ufd capacitor in series with a cheap
> light dimmer from Home Depot. Only get around 1-1/2" sparks, much less
> than with my fancy triac driver, but it sure is simple!!!!!!
> By the way, note that the peak currents can be tens of amperes or more,
> depending on the capacitor size. These current spikes do flow in the
> line and can cause severe interference somewhere else in the house.