I want some help with LM358 based differential amplifier

Discussion in 'General Electronics Chat' started by ishank3, Nov 19, 2015.

  1. ishank3

    Thread Starter New Member

    Nov 19, 2015
    2
    0
    Hello Sir,
    I am new in the community. I need some help for my circuit.
    I am using LM358 for building diff.amplr circuit for making sensor offset zero.
    But, its not working properly. Offset of my sensor is 100mv. Can you please help me to build the circuit?
    Thank you.
     
  2. DickCappels

    Moderator

    Aug 21, 2008
    2,659
    632
    You don't give much information. Please post your circuit including the transducer.


    By the way the LM358's output cannot go all the way ground unless you help it with a 2.2k resistor (typical value) from the output to ground.
     
  3. AnalogKid

    Distinguished Member

    Aug 1, 2013
    4,545
    1,252
    Schematic, input voltage ranges, schematic, desired output voltage range, schematic....

    ak
     
  4. Bordodynov

    Active Member

    May 20, 2015
    643
    188
    See

    Ampl2.png

    and
     
    Last edited: Nov 20, 2015
    absf likes this.
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