Re: The Next Coil
Sent: Thursday, July 31, 1997 6:37 AM
Subject: Re: The Next Coil
In a message dated 97-07-31 03:23:32 EDT, you write:
>Yes, indeed! With the new larger Ctop, I became concerned that the
> output impedance of the sec would drop too low. The Lsec was chosen
> to get the impedance back up to around 20000 ohms, which seems to
> work well. Then the other component values, all the way back to the
> 'wall socket', just fall out of the equations assuming a design goal
> of about 15 ohms for Zpri. A bit of handwaving, but that's the best
> empirical data that I have at the moment.
> Actually, my spreadsheet predicts a Vout just over 1MV,
> but that assumes about 50% efficiency.
BTW, along with my square law suggestion for spark length, I also
did a capacitor size projection based on my findings and some
hand-waving (I didn't post this), and came up with .24uF, using
134.4kW, and assuming a 44 foot spark length. This agrees
closely with your data.