Re: How should we measure coil efficiency

From: 	Julian Green[SMTP:julian-at-kbss.bt.co.uk]
Sent: 	Friday, July 25, 1997 5:22 AM
To: 	tesla-at-pupman-dot-com
Subject: 	Re: How should we measure coil efficiency

>The difference that I'm thinking of is that ground strikes that occur at
>longest possible distances do not stay connected...they eventually 
>release.  Sometimes they connect for only 1/10th of a second or less.
>John Couture is suggesting a measurement length that allows the arc
>to remain connected indefinitely (I believe).  To obtain such a long-term
>connected spark requires using a shorter distance.
>I however agree with you that we should measure our sparks at the 
>longest distance which produces for instance 10 hits per minute, and
>that this is basically the same as the free air sparking distance.
>John Freau

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