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Current Impulse waveforms

Current Impulse waveforms

Current Impulse waveforms

I am currently developing a test circuit to output a lightning current wave with a peak of 10kA. My problem is that in order to get the required characteristics of the wave ie. rise and fall times, I need a 0.3ohm resistor. I am not sure what type of material to use that would sustain a peak of 10kA for approxiamately 30microseconds. I was considering water...any suggestions.

RE: Current Impulse waveforms

You might try getting in touch with the folks at HV Technologies ( http://www.hvtechnologies.com/ )  

I once attended a high voltage testing techniques seminar sponsored by them, and a number of them seemed pretty well plugged in (no pun intended) to the suppliers for equipment like that.

HV Technologies, Inc.
P.O. Box 1630
Manassas, Virginia  20110

tel. (703) 365-2330
fax. (703) 365-2331

RE: Current Impulse waveforms

It is only 300 J/pulse. I think you could make the R
from a a lenght of iron band. I would fold it in a
VVVVVVV  shape and if the frequency is high enough
perhaps immerse it in water.

E-mail for more....


RE: Current Impulse waveforms

Suggestion: Visit
and search for the resistor manufacturer offering the resistors for lightning circuits. In case that you need a nonlinear resistor it could have some other name, e.g. thyrite, etc.

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