fast shorting relay
fast shorting relay
(OP)
I am currently generating an AC sinusoidal signal for approximatley 60ms across two electrodes. However, after I shut off the function generator signal, there appears to be some post electrical ringing and reflection that I would like to eliminate. I would like to short the two electrodes together immediately after I finish generating the signal within several tens to hundreds of nanoseconds. In theory, I think I can accomplish this with a symmetric MOSFET but I am having difficulty finding one. All of the MOSFETs I can find are design for DC drain to source applications and all of the photovoltaic power FETs switch in the orders of milliseconds. Any recommendations would be appreciated.





RE: fast shorting relay
If you need higher currents and voltages, you have to use thyristors. You should be able to find units with hundreds - even thousands of amperes and at least a couple of kilovolts.
Triacs are not very fast. I guess that you have to do with microsecond delays. Nanoseconds will probably be difficult.
RE: fast shorting relay
(50 Ohm ?)
How much attenuation do you need?
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