I'm faced with the following problem. I would like to send a current pulse of about one amp through tissue with a resistance of about 3000 ohm (so I need 3000 V obviously). The pulse should be as short as possible (I'd say no longer than 10 µs). The shape of the pulse is not that important, but it should be reproducible and short and deliver about 30 mJ or more.
And the whole thing should be as cheap as possible. So far I've collected the following ideas:
Building a mini Marx Generator: Kind of like this http://www.electricstuff.co.uk/marxgen.htm Maybe triggered by a relay. As i understand it the unloading time decreases with the capacity, so two charged capacitors connected in series would halve the unloading time, so one could work with this (according to my estimates) but I'm not really sure about the reproducability and I have little experience in electronics anyway.
Another idea would be to use a flashlight used in photography, here I'm not sure if the pulse would be short enough. Or a high voltage switch.
I'd be grateful for any ideas thoughts and suggestions.