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Re: Main spark gap across one or both transformer legs?
Original poster: John <guipenguin@xxxxxxxxx>
Ok.... the only caps I have right now are 11x 910pF caps.... so the
highest capacitance I can go is 0.01uF
If I were to use a 12000v 30ma transformer needing
0.006631uF then would it be safe using 0.01uF with pi/2*
0.006631 = 0.010416uF is that safe enough?
You are the first person to tell me about this rule.... everywhere
else I have read it says resonant.
for a 9kv 30ma transformer 11x 910pf is still low.....
On 10/3/06, Tesla list <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx> wrote:
Original poster: Vardan
<<mailto:vardan01@xxxxxxxxxxxxxxxxxxxxxxx>vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
At 04:49 PM 10/3/2006, you wrote:
>Never use the resonant cap size? if the resonant cap size is
>0.0088uF then how much higher or lower capacitance should I
>go? I was planing on doing about 0.0091 anyways
EEeeaakk!! You want pi/2 x the 0.0088uF!!!
If you have a 9kV 30mA transformer and a static spark gap (pipe
tubes, bolts, etc. as opposed to a sync motor rotary gap), You need a
roughly 0.0133uF!! The extra capacitance "loads down" the NST so it
will not go over voltage.
We should probably start putting "never use" warnings on cap
charts!! I just fixed my document with a warning not to use resonant
value caps ;-)))
<http://hot-streamer.com/temp/FormulasForTeslaCoils.pdf>http://hot-streamer.com/temp/FormulasForTeslaCoils.pdf
Version 3.3 now!
Cheers,
Terry