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Controlling offset using VCR

Discussion in 'General Electronics Discussion' started by mwminor, Nov 9, 2012.

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  1. mwminor

    mwminor

    4
    0
    Nov 4, 2011
    Hi there

    I'd like to use a VCR to control the output offset Voltage of an OpAmp.

    The offset of the amplifer (OPA111) at the moment is controlled via a front panel pot (10K), but I'd like to take the pot out of the circiuit and control it using a JEFT (or similar).

    However, the OPA111 offset pins are referenced to the negative supply which complicates the circuit.

    Can anyone offer any assistance with this,...?

    Many thanks

    MW.
     
  2. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

    4,960
    651
    May 8, 2012
    Google AD5228 data sheet.

    Chris
     
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