high voltage probes

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Mark Broker <mbroker-at-thegeekgroup-dot-org> 

I have a desire to hook our small Marx Generator up to an oscilloscope to 
view the waveform across the rectifier during the discharge event.  A while 
back we overvolted a 32kV rectifier we were using at "low voltage" with 
only a little over 10kV cap charge.  In theory, only 20kVmax should have 
existed across the rectifier.  I don't want a similar event with the final 
55kV rectifier when we run it at full voltage off a 15/30 NST.

I was thinking of just making a 1000:1 resistive divider, which would work 
for low frequency/DC, but I don't know how well that would work with the 
MHz hash in the discharge.  Any opinions from the crowd?  I don't expect 
the need to measure more than 25kV.

Thanks!

Mark Broker
Chief Engineer, The Geek Group