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average spark length



Original poster: "Rodney Goolsby by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jeronimo-at-bright-dot-net>

I know that John Freau's equation says that the spark length for a 12/30 
NST is 3 feet (or very close), but in actuality what is the average sparks 
people get from any TC powered by a 12/30 NST?