Minimum Inductance Needed for an Inductor Based Marx Generator

Robert Francis, Wed Sept 21 2022, 11:41PM

Because so many inductors out there are not made for high voltages I decided to roll my own with FEP based 10kV wire. To keep the size down I used a ferrite core based bobbin.

I think the one I ordered was too small as fully wound it came out to about 300uH.

Is 300uH too low an inductance to work in an inductor based marx generator?

I have seen estimates go as low as 400uH.

On the high end I have seen 1000uH used.

The wire is very expensive which is why I am asking you guys instead of just making a prototype 3 stage marx generator with the fep wire.

I ordered the largest bobbin mouser had in stock and was going to test it with the fep wire and measure its inductance but I figured I would ask you guys before committing to using the larger bobbin. Obviously if I can get away with the bobbin I used it would reduce the amount of fep wire needed per inductor which would save me money.