RE: SISG Coil question... (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Fri, 17 Aug 2007 23:37:02 -0500
From: Mark R Dunn <teslamark@xxxxxxxxxxxxx>
To: 'Tesla list' <tesla@xxxxxxxxxx>
Subject: RE: SISG Coil question... (fwd)


Dan:

You have not given much information.  More info would yield a better answer.

The operating frequency of the coil should not be a problem (within reason ~
100khz).

The break rate for the SISG would be a big issue.
You need to have a power supply (impedance) and tank cap combination that
gives a break rate around 120 BPS for optimal operation.  This forces the
secondary and resonant frequency to some extent.

For Primary Current you can use the following formula:

Ip = (Vpk volts)*(Tank Cap nF)*(10^-9)*2*Pi*(ResFreq Hz)

This formula is good for any coil(I think).
The current should not be a concern unless it is getting toward 600 amps.
NO one has reported blowing an SISG - Except when Terry hooked it up to a
huge capacitor bank (like 5 mF) and blasted it, but that was not a Tesla
Coil.  (Note:  That's 5 mF or .05F not 5 uF)  I think we figured 10 or 20
Joules.  It was last year and I citing from memory.
Regards.

Mark


-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx] 
Sent: Friday, August 17, 2007 1:17 PM
To: tesla@xxxxxxxxxx
Subject: SISG Coil question... (fwd)


---------- Forwarded message ----------
Date: Fri, 17 Aug 2007 10:52:45 -0400
From: Daniel Kline <daniel_kline@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: SISG Coil question...

Hello,
Does the operating frequency of a Tesla-coil system using a SISG matter?
Is there a frequency that's too low or too high?


Is it possible to over-current a SISG?
How do I calculate current through a SISG?

Thanks,
Dan K.