Re: [TCML] Calculate Output Voltage

[Mddeming@xxxxxxx]

In a message dated 11/15/07 6:39:48 P.M. Eastern Standard Time,  
mrclivehansen@xxxxxxxxx writes:

Hello,
I was wondering if anybody knows of a formula  to calculate the 
secondary voltage of a Tesla coil. The only one I thought  to try was 
Vout=(Vin/Pri)Sec which should work with a standard transformer  if Vout 
is voltage out, Vin is volts in, Pri is primary turns, and Sec is  
secondary turns. However, this seems to be returning an extremely high  
voltage.

Thanks,
Clive
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Hi Clive,
 
You're right. It's Wrong. That formula is correct for non-resonant,  
iron-core transformers with coupling coefficient close to 1.00. A better  theoretical 
value is Vs=Vp x sqrt(Ls/Lp), where L is the inductance, and  this is an upper 
limit. Hitting 80% of this value requires a very well  designed and tuned 
coil.
 
Hope this helps,
 
Matt D.



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