Original poster: Just Justin <rocketfuel@xxxxxxxxxxxxx>
I picked up a Maxwell pulse cap rated thusly:
Voltage: 35kV
Cap. (Meas.): 30.7uF
E.S.L: ~0.02uH
I would like to use it with my first coil, which is
a full wave rectified 12kV NST (~17kV peak DC).
I'm not planning to use a charging reactor at this time.
I will pursue that avenue when I move up to MOTs (otherwise
I'd be looking a tank cap voltage of 35kV!).
I just thought I'd ask if anyone knows of any gotchas that
I should be aware of that could possibly raise the primary
circuit voltage above the 17kv DC coming out of the PSU?
I know with AC there is the issue of resonance in the primary
circuit that can raise primary voltage through the roof, but
since my PSU is DC, that seems like it should be less of an
issue. On the other hand, there will be some ripple (or a lot,
if I can't find some cheap filter caps!) which I imagine could
end up resonating with the cap as well. Am I correct in assuming
one would use 120Hz as the frequency in calculating the resonant
capacitance of the NST-Tank Cap system? Does it even apply here?
Thanks!
Justin in Austin
>Original poster: "Gerry Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
>
>Hi Mike,
>
>Cres(nf) = 10^9/(2*pi*line_freq*XLtranny)
>
>XLtranny = Vs_oc/Is_ss = 14400/120ma = 120Kohms
>
>Cres @ 120ma = 22nf
>Cres @ 240ma = 44nf
>
>Use Cp = 1.6*Cres (LTR value for static gaps)
> Cp = 2.8*Cres (LTR value for SRSG's)
>