op amp offset adjust

Discussion in 'The Projects Forum' started by kahafeez, Dec 11, 2008.

  1. kahafeez

    Thread Starter Active Member

    Dec 2, 2008
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    0
    hi there. i need to know that in op amps other than 741 in which there arent any dedicated offset adjust pins is it necessary to adjust it for smaller gains???

    if it is plz post a schematic on how to adjust the offset for an op amp like LM358. and plz post a schematic. thanx

    Note: i dont have EPOTs in my country so plz dont suggest solutions involving EPOTs
     
  2. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    Feed a low current into the inverting input of a dual or quad opamp to adjust its input offset voltage.
    Use a trimpot across the supply then a series resistor. I don't know what is an EPOT (a digital pot?).
     
  3. kahafeez

    Thread Starter Active Member

    Dec 2, 2008
    150
    0
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