[Prev][Next][Index][Thread]
Re: Non-Linear Coil Winding Experiment.
---------- Forwarded message ----------
Date: Wed, 15 Oct 1997 19:47:07 -0600
From: terryf-at-verinet-dot-com
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Non-Linear Coil Winding Experiment.
At 11:24 AM 10/15/97 -0600, you wrote:
>
>
Very big snip........ (made bigger)
>sparks, etc. Of course, the electrostatic properties of the toroid itself
>may also be altering the current distribution along the coil. The primary
>coil coupling would also have to be adjusted, but that is generally no problem.
> I expected Zbase to vary somewhat and was surprised to find it did
>not. However, this is in the non-spark breakout mode, and base currents are
>minimal. My guess is that Zbase will change a bit when the sparks start
flying.
>
>More to ponder...
>
>Regards,
>Mark S. Rzeszotarski, Ph.D.
>
>
My original reason for starting this project was to try to reduce
Cdis to increase output voltage and reduce the high turn-to-turn fields in
the base of a coil to reduce the chances of breakdown (ie. shorter but still
powerful coils). This appears to have worked in these coils :-)) However,
the reduction in Cdis appears to be caused by concentrating fields around
the coil rather than from reducing wind-to-wind effects.
If, as Mark's testing suggests, the Zbase and I assume the losses in
these coils is equal then this could have many implications as to how we
think about coil losses. I would not expect these coils to have equivalent
losses. My coil #2 was supposed to have reduced losses at full power. Of
course, full power is really needed for this test.
I cannot measure the Q or losses with any accuracy but I am sending
the three coils to Mark. Perhaps he can test the losses and see what we
have. If the losses for all three coils are the same, I will have to trash
all my spice models again!!! :-))
We will eventually work up to real coils that produce real sparks.
I think this is a good start!
Terry