# Richard Hull's nemesis

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From:  John H. Couture [SMTP:couturejh-at-worldnet.att-dot-net]
Sent:  Friday, January 23, 1998 11:36 PM
To:  Tesla List
Subject:  Re: Richard Hull's nemesis

Richard -

Thank you for the information on your coil.

You may want to refer to my reply to Greg Leyh regarding the power gain
for a Tesla coil. Note that this information can also be used to determine
the secondary voltage and other parameters of a TC for design purposes.

For Greg's example  3 MV - 100 pf - 240 bks - (12 % eff - 45 000 watts
input from JHCTES computer program)

Input power  45 000 / 240 = 187.5 RMS watts per bks (spark)
At 12 % eff   187.5 x .12 = 22.5  RMS watts per spark in secondary
Sec power gain = 20     22.5 x 20 = 450 Inst watts per spark in secondary
Sec volts  Vs = sqrt((2 x 450) / (100 x 10^-12)) = 3 x 10^6 volts = 3 MV

John Couture

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At 01:19 PM 1/23/98 +0000, you wrote:
>
>----------
>From:  richard hull [SMTP:rhull-at-richmond.infi-dot-net]
>Sent:  Thursday, January 22, 1998 8:33 PM
>To:  Tesla List
>Subject:  Re: Richard Hull's nemesis
>
>At 05:34 PM 1/22/98 -0600, you wrote:
>>
>>----------
>>From:  John H. Couture [SMTP:couturejh-at-worldnet.att-dot-net]
>>Sent:  Thursday, January 22, 1998 4:25 PM
>>To:  Tesla List
>>Subject:  Re: Richard Hull's nemesis
>>
>>At 06:24 AM 1/22/98 +0000, you wrote:
>>
>>  Richard -
>>
>>  Your Nemesis coil apparently was well tested with powers from 5 to 13 KW.
>>The Tesla List at present is interested in secondary voltage vs spark
>>length. Can you give us some comments on spark lengths, pri and sec
>>capacitance, primary voltages, etc.?
>>
>>  Forget about the secondary voltage unless you want to comment.
>>
>>  John Couture
>>
My knowledge is largely based on emperical experiment from the doing.  What
>I am speaking of now is regarding classic Tesla coils only.  Magnifiers are
>different beasts.

----------------------------------------------    Big snip

>Richard Hull, TCBOR

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