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A tragic coil
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From: D.C. Cox [SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: Tuesday, February 17, 1998 4:12 PM
To: Tesla List
Subject: Re: A tragic coil
to: Mark
You can not expect a 600 volt capacitor to operate at 10,000 volts. It's
like parking a 10,000 pound truck atop a wooden crate designed to support
600 lbs. It won't work -- you need a 20 kV cap to handle the ignition coil
peaks and then keep your sparkgap tight (0.200 or less -- max).
DR.RESONANCE-at-next-wave-dot-net
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> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-pupman-dot-com>
> Subject: A tragic coil
> Date: Tuesday, February 17, 1998 7:22 AM
>
>
> ----------
> From: MARK [SMTP:moyson-at-tig-dot-com.au]
> Sent: Tuesday, February 17, 1998 4:56 PM
> To: Tesla List
> Subject: A tragic coil
>
> Hello everyone!
> I have just made a new coil from left over materials. DISASTER..... no
spark
> from the secondary and the capacitor keeps exploding. I cant find the
problem.
> Here are its specs.
> Powered by a car battery and ignition coil about 10Kv output.
> A static spark gap in series with the primary of 7 turns (.5 inch spacing
> between turns) of uninsulated copper wire .8mm diameter
> A capacitor 630v .01uf in parallel with primary behind the spark gap
(next
> to coil)
> A very old secondary (already wound by someone else) uninsulated copper
wire
> 3.2" diameter and 20"tall... 168 turns spaced by 5mm.PVC pipe type.
> Disharge terminal is just a sheet of aluminium ( for the moment)
>
> Although this is a poor set up (put together in 15 mins with leftover
junk
> from other coils) I have never had results this bad. I am not prepared to
> canibalize my other coils but am prepared to buy a few key items (not too
> expensive)
> What should I do ??????????? All sugestions welcome.
> Mark Moyson.
>