[TCML] Re: Dummy load for optimum cap size Experimentation
glau1024 at gmail.com
Fri Oct 8 19:25:18 MDT 2010
I'm pleased to have completed my experiment,to determine the optimum
capacitor value for a Tesla coil using a static gap, by monitoring the
output of a halogen lamp dummy load in place of the primary coil. I had
originally planned to do this for both 15/60 and 15/30 NST, but due to time
constraints, I just did it for three different 15/60's. Maybe later...
When I started the experiment, I was certain that I would find that the
table used to choose cap values based on NST specs wasn't right, since it
was generated (I think?) using just simulation results. But it turns out
that it's pretty close, at least for a 15/60.
Other finding were that using a Variac to boost the NST primary voltage
above 120VAC results in a huge boost to power throughput.
Also, the power throughput when using a static gap, is far more chaotic than
I had ever imagined. It's not enough to try to average things over a few
seconds, 20 seconds, or even a minute. Even after averaging for two
minutes, there are still variations. I think this may explain why coils
sometimes deliver the occasional exceptionally long spark, but it's not
I have generated a comprehensive report, about a megabyte download. Please
look in http://drop.io/garylau for Dummy Load Experiment.pdf It's a good
To those who loaded me equipment, I thank you again.
Regards, Gary Lau
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