triggered gaps in Re: Three phase TC

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

One of the trickier things will be that I suspect that it might be tricky
maintaining the 120 degree timing once the streamers start to form and the
coil's resonant frequency drops.  If you use a constant time delay, this
will have the effect of decreasing the number of degrees (a 10% drop in
frequency would mean you've just gone to 108 degree shift).

On the other hand, I don't think it will make any difference... a few
degrees one way or another isn't going to change the delta V between the top
loads all that much.


As to delta vs Wye discharges (the photos are way cool by the way), it is
probably more determined by the electric field, which in turn will be
determined by the ratio between topload diameter and spacing between coils.
If you want small toploads far apart, you might need to go to multiple
stacked toroids to get enough Ctop.

Also consider that the sparks grow over many cycles, and that as the sparks
grow, the efield among the toploads will change dramatically...

If you want the "appearance" of delta discharges, you can get that by
running a DC power supply, and just firing the coils in pairs at a suitable
rate.  First you fire 1&2 simultaneously, then 2&3, then 3&1.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, July 14, 2001 9:27 PM
Subject: Re: Three phase TC


> Original poster: "Bert Hickman by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<bert.hickman-at-aquila-dot-net>
>
> Chris,
>
> The sequence of three trigger pulses, separated by 120 RF degrees at Fo,
> can be generated at whatever break rate is desired, and you could "fire"
> the gaps at this rate for however long you desired. Triggering could be
> done synchronously with the incoming single phase mains, or by using a
> variable rate pulse generator to drive a variable break rate if using a
> DC resonant charging system.
>