New Coil Firing!
Subject: New Coil Firing!
From: richard.quick-at-slug-dot-org (Richard Quick)
Date: Fri, 27 Jan 1995 22:00:00 GMT
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* Carbons Sent to: bhaley-at-shore-dot-net
> From: bhaley-at-shore-dot-net (Brendan Haley)
BH> OK, here's a question, and I hope I describe it correctly.
BH> I just got my first coil working, with the help of
BH> everyones postings, (thank you).
Great Work! Please tell us more!
BH> I wound the secondary on regular PVC pipe (4 in. diameter),
BH> which I know now is somewhat of a no-no.
I have never heard of anyone's first coil being perfect!
BH> The question is: the winding stops about 4 inches from the
BH> top of the pipe. There is one sweeping wind from the end of
BH> the tight winding up to the top, where the discharge
BH> terminal is. Does this spread out the capacitance along
BH> this long wind, and away from the terminal. I have noticed
BH> that there is corona all along this wind, and the sparks
BH> seem to get stronger near the tight winding.
BH> I am planning to cut off the rest of the pipe anyway, but I
BH> am curious as to whether my intuition is correct (allthough
BH> I doubt it)... Any kind responses are appreciated. Thank you
The only problems you are having is that: your discharger is
mounted too high up off the top of the secondary winding; your
discharger is too small in diameter; or both.
Cut the coil form down to 1 inch above the winding, and properly
cap the coil. I just use scrap pieces of squarely cut PVC pipe as
insulating spacers to change and adjust the height of the
... If all else fails... Throw another megavolt across it!
___ Blue Wave/QWK v2.12