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Re: [TCML] Spark gaps, Solid state switches and diodes



Yes, 648 turns at 32 tpi. I would expect Ipeak to range 185A to 1130A (15/30 up to 15/180). The primary details are important as geometry greatly influences Lpri and thus Ipeak. Top loads play a role also since primary resonance is based on an accurate f2 with all components in place. So if the system is listed in some detail, then Ipeak is better guesstimated.

Regards,
Bart

Finn Hammer wrote:
Stephen Hiscock skrev:
Hello Fin Hammer,
thank you for helping me out!.

I've done some basic Calculations.
Here is the basic config of the coil.
6.5'' Diameter, 20.25 winding length and 32 turns/inch so about 968 turns in total.
wound on PVC former.

I get around 600 something turns.......

The primary is 12.5 turns 13.5 inside diameter and 37 inches outside diameter. and in inch between turns. giving inductance range of 30 - 100uF fopr tuning

I would expect henries here......
the Capacitor is 6.4nF per transformer as they are 15kV at 30mA each.
so giving a range of 6.4nF to 38.4nF depending on how many I hookup.

you sent me this:
Ipeak is a relation to Lpri, Cpri and Vmax.

First calculate Zpri =>sqrt(Lpri/Cpri)
so from this my Impedance is 781 to 125
Then Ipeak => Vmax/Zpri = 21,213 / 125 = 169
or 21,213 / 781 = 27
and Ipeak ranges from 27 to 169 Amps (this seems a bit low)
is this correct?

So I'm guessing the standard design will work fine - but just lots in series?

Stephen


Could you supply tuning point for the biggest capacitor you use. This means: how many turns do you have engaged when all caps are in the circuit.
From this we can calculate Lpri needed to calculate Ipeak.

Cheers, Finn Hammer
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