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Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Pinky's Brain wrote ...
Easier said than done for more than 1 kV, transformer won't be sharp and a single MOSFET on each leg of a bridge won't get you there.
If you mean for the square wave generator, i was planning to use two 1 kV MOSFETs in series, switching a resistor on and off at 2kV, but i dont know how to do so with out killing the MOSFETs .
Wait, wait, wait i have a great idea!
What about this, TVS diodes were used with a ramping voltage up to breakover? I have to think about this more.
Registered Member #2901
Joined: Thu Jun 03 2010, 01:25PM
Location:
Posts: 837
If all you are ever going to do with the generator is switching into into your divider (essentially a xx pF load) the TVSs can almost certainly handle it even if a gate drive were too fail ... it's just not a whole lot of power.
If it has to be able to deliver some real power to a lower impedance load you will have to be a bit more careful.
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Ive got the whole HV section assembled after class ill fill it with olive oil.
A disturbing developement: its top heavy, dam it. And thats without oil and just the acrylic insulator. with the porcilain insulator it'll be even more so.
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High voltage probe for O-scope, 2 of 2, ( FABRICATION ).
