Re: which coilform parameters best?

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

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net>

Tesla list wrote:

> >Bart A 5kva pig can put out 10kva. Pigs are very rugged
units................

I'm not sure who wrote the line above. I didn't receive this post but read
it within David
Baehr's reply. In any respects, you are correct. Pigs are rugged and can be
pushed beyond their
plate ratings (large coils and 5kva pigs = common to push them as the coils
can handle more power
and longer sparks are just too tempting).

Assume a 14.4/347 (5kva) pig is pushed to 10kva with the 0.1uF cap = 10.4ms
to charge cap to
20362 Vp.

120 bps = 8.33ms = 19900 cap V = 19.83 joules.
240 bps = 4.17ms = 16900 cap V = 14.28 joules.
480 bps = 2.08ms = 10955 cap V = 6.04 joules.

Wouldn't it be nice to start with a 10kva pig you could push to 20kva? When
the cap size gets up
there, I think it would be advantageous to go higher, especially if one
wants to play with faster
breaks.

Take care,
Bart