Re: DC Tesla Coil

• To: "'Tesla List'" <tesla-at-pupman-dot-com>
• Subject: Re: DC Tesla Coil
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Sun, 4 Jan 1998 23:13:10 -0600
• Approved: tesla-at-stic-dot-net

From: 	Alfred C. Erpel[SMTP:aerpel-at-op-dot-net]
Sent: 	Sunday, January 04, 1998 6:40 PM
To: 	Tesla List
Subject: 	Re: DC Tesla Coil

Greg and all



GL> The reactive power in any tank circuit is given by Ec x Fres,
GL> and the circuit will resonate only at that reactive power level.
GL> Ec will _always_ equal El at resonance by definition, regardless
GL> of the component values or frequency.



    I'm lost because I don't know what EC and Fres above mean.


AE>> If so, then to resonate at 100,000 hz would require a capacitor of
AE>> .000001591 F and a primary of .000001591 H. This primary inductance
value
AE>> does not appear to be practical in a tesla coil.

GL>You are assuming that 1 ohm is the optimum surge impedance
GL>for the tank circuit here.  In reality, Zsurge should be
GL>about 30 to 50 times higher than the Rgap, in order to
GL>obtain good performance.


    I don't know enough to assume too much, just barely enough to know that
I don't know a lot.<smile> What do you mean by surge impedance and why
should it be 30 to 50 times the gap resistance?


Regards,
Alfred Erpel

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