Re: How should we measure coil efficiency

From: 	Julian Green[SMTP:julian-at-kbss.bt.co.uk]
Sent: 	Monday, July 28, 1997 12:15 PM
To: 	tesla-at-pupman-dot-com
Subject: 	Re: How should we measure coil efficiency

>>I agree.   Attempts to measure spark length by continious spark is useless
>>as the tune of the coil is affected by the spark.   If this method of
>>measuring coils was adopted then we would be measuring the output of a 
>>de-tuned coil.
>Julian Green
>Julian -

>  Why measure the output of a de-tuned coil?

>  Why not keep retuning until you get a tuned coil and the longest
>continuous spark?
>>  John Couture

Sorry, I was thinking that a TC generating continous spark to earthed target would 
be loaded such that it is not operating in 'normal' mode.

Just like that crystal oscilator circuit I was trying to make work the other day.
It would only work when the scope probe was attached.  The method of measurement
affects the outcome.

I do like the idea of 10 strikes per minute to earthed probe as this allows the 
coil to operate in the way we all intend and provides a meaningfull measurement.

Julian Green