How to remove ground noise

Discussion in 'General Electronics Chat' started by dileepchacko, Mar 12, 2009.

  1. dileepchacko

    Thread Starter Active Member

    May 13, 2008
    102
    1
    How to eliminate ground noise for differential amplifier using op-amps, please suggest me some techniques.
     
  2. Mike33

    AAC Fanatic!

    Feb 4, 2005
    349
    25
    You can try star grounding...all grounded points go to 1 ground bus on the board, then that buss is the only connection to the battery "-"....also, maybe bypassing your supply at the board with a 10uF cap, then a cap across the V- and V+ of about .1uF. Some noise is going to be present no matter what due to the movement of electrons...some opamps are quieter than others (ie., TL072 vs. LM741).
     
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