Terry's Differential Probe Circuit

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Original poster: "Mccauley, Daniel H" <daniel.h.mccauley-at-lmco-dot-com> 

Terry,

In regards to your differential amp probe design you were working on,
you said you were having some problems with it.
Were those problems simply related to compensation or do you think it
was more a function of the device you were
using (THS4151).

I'm looking to use a differential type amplifier to sample the output of
my new SSTC controller, which will then be
connected a BNC output at the front panel to be used with an
oscilloscope.  Basic requirements are at least 1MHz bandwidth, and able
to sense at least +2000V/-2000V.  Since I'm only interested in a general
waveform view, i'm not worried about
any small amounts of distortion or droop or other problems which might
be associated with a poorly compensated amplifier.

If you could provide some details and any lessons learned, it would be
appreciated.

Another approach is using a simple voltage-sampling transformer.   I'm
still looking into both.

Dan