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High Voltage Low Current Op Amps ?

Discussion in 'Electronic Design' started by RJR, Sep 4, 2007.

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  1. RJR

    RJR Guest

    Does anyone know a source of High Voltage Low Current Op Amps
    (300-400V,1mA) other than APEX ?

  2. John Larkin

    John Larkin Guest

    I posted a simple, but rather slow, HV opamp design here a while back.
    It uses high-voltage optocouplers as the output devices.

  3. I posted my 2500-volt low-noise (0.1ppm) HV
    amplifier design last year - it took 350uA.
  4. Are you sure? Google groups with "2500 hv amplifier author:hill" returns
    only this one post (the one I'm replying to).

  5. Winfield

    Winfield Guest

    I can't tell you the words, but it occupied several threads.
    We made 160 of the amplifiers; they're in use at CERN now.
  6. Ah, then it was that thingy with the stacked MOSFETs that had to do the
    precise ramps. Yes, I remember.

  7. Good memory, but no, that was my 10kV, 1us
    precision ramp generator.
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