Wanted: 600 volt amplifier

[John Hunt]

I am having difficulty finding a high voltage amplifier
needed for some experiments.

Here are the specifications:

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- output up to 600 V p-p

- bandwidth 100 Hz to 100 kHz
(ideal would be DC to 1 MHz)

- voltage gain at least 30 x

The load is about 30 kohm (about 10 mA peak current).
The load is referenced to ground.

*************************************************

I would prefer a commercial unit, but may need to
build my own.

Any suggestions would be appreciated. Please
email replies; I will post a summary if there is interest.

Thanks,

John Hunt john...@eeap.ogi.edu

Senior Research Engineer
Dept. of Electrical Engineering and Applied Physics

Oregon Graduate Institute
PO Bx. 91000
Portland OR 97291

(503) 690-1143

[Carl F. Ijames]

Apex Microtechnology Corp., in Tuscon, AZ, makes high voltage op amps (so
do others, I've just had good luck with Apex in the past). They have one
with the bandwidth you need (model PA85), but rated at 450 V max. If your
load wasn't referenced to ground, you could use two and drive each end with
an op amp.

Carl Ijames ija...@helix.nih.gov