[time-nuts] fast edge, rise time.
Marek Peca
marek at duch.cz
Thu Dec 26 11:13:47 EST 2013
> The target is 4ns, while ideas seemed to be clear at some point, now I'm
> having doubts if better to use a MOSFET or a bipolar transistor
> as the switch element. Experiments with MOSFETs presented me some
> difficulties charging the gate capacitance having some trouble to achieve
> something in the 4ns region. Well 4ns seems hard whatever device anyway.
I have seen recently two kinds of devices for similar task: MOSFETs and
avalanche breakdown transistors. Try the second ones, might be a good fit
if the pulsing is not very frequent (say, kHz range).
Regards,
Marek
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