Hi Unless you want run for < 1 second, that rules out a Krytron.
Length of operation also impacts some of the other implementations. Bob On Dec 26, 2013, at 9:16 PM, ct1dmk <[email protected]> wrote: > Many thanks to all for the nice tips. > > I may narrow down by saying a few more specs as suggested. > The pulse would see a somehow unknown load but for a start I > was suggested to have my source with 50ohm impedance so worst > case would be a short circuit and therefore the pulse would be a current pulse > and would have some 10Amp. Pulse length about 100ns so only some 0.5mJ energy > that would die inside the pulse source( this would be the worst case). > The 100us repetition rate make a a very small duty cycle of 1/1000 so average > power > maximum 5W. > > Since the amplitude and timing parameters are to be controlled (pulse timing > come from an FPGA) I really need a solution using that trivial switching > element fet or bipolar (and can't really do a more exotic scheme if I cant > electronically control the parameters) also I must use a transformer because > these short pulse are to be superimposed to another voltage and a transformer > becomes very handy to do that. I interrupt the wire and insert the secondary > there to add the pulses. > > The challenge I'm facing is on the device either RF FET or Biplolar tr etc. > and > surrounding circuits, transformer, etc. this to achieve the 4ns (or 5ns). > (the transformer I have in mind is something very similar to those > transformers > on the final stages of HF/VHF ham radio amps, coax cables and ferrite cores) > any suggestion regarding devices etc ?... > > Thanks for all comments. > > Luis Cupido. > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
