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

    AAC Fanatic!

    Feb 4, 2005
    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).