Re: Terry's GM HEI Coil Update.

To: tesla-at-pupman-dot-com
Subject: Re: Terry's GM HEI Coil Update.
From: "James" <elgersmad-at-email.msn-dot-com> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
Date: Sat, 21 Nov 1998 06:25:44 -0700
Approved: terryf-at-verinet-dot-com

    The only thing you would want to stack primaries for is increasing the
primary's frequency responce, because you can almost double the resonant
frequency.  Using two supplies, or seperate supplies is not wise, because
the phase relationship of one in respect to the next would, or could cancel
out the other supply's output.  If you used a multiphased winding
arrangement it wouldn't be a tesla coil geometrically.  I don't even think
it is possible to build a multiphased air core transformer.


>Original Poster: Ed Phillips <evp-at-pacbell-dot-net>
>
> As for stacking a bunch of coils in series with independent power
>supply for each pair, that should work fine but wouldn't be the most
>convenient thing to build and operate.  Why doesn't someone here try
>it?  Would think that the drivers could all be pulsed at the same time
>by a flash, as you suggest.  Perhaps small photo-SCR's could be used to
>trigger the main switch.
>
> As for the last idea, the insulation is too poor to permit that sort of
>thing.  The coil as built has quite a respectable closed magnetic
>circuit steel core, and to approximate similar operation with a long bar
>is probably impossible.  First problem I can see is that all of the
>coils would experience a core-to-inside of the winding breakdown.
>
>Ed
>
><<<< This would not be a Tesla coil anyway!!  I do want to keep it a Tesla
>coil in any case.  I do have a photo of a cut in half GM HEI coil.  E-mail
>me and I will send it to anybody.  It is about a 175K JPG file but it is
>pretty fine.  The insulation is really very good even at super high
>voltages... - Terry >>>
>
>