virtual ground

Reply to Thread

Discussion in 'General Electronics Chat' started by dileepchacko, Aug 7, 2008.

Reply to Thread
  1. Aug 7, 2008 #1
    dileepchacko

    Thread Starter Active Member

    May 13, 2008
    102
    1
    Hi All

    What is the exact meaning of the virtual ground of an op-amp, why we are calling as virtual ground. Is the point is directly connected or internally connected.
     
    #1 Reply
  2. Aug 7, 2008 #2
    studiot

    AAC Fanatic!

    Nov 9, 2007
    5,005
    521
    The answers to your question can be found here

    http://www.allaboutcircuits.com/vol_3/chpt_8/5.html

    Note in particular the virtual ground only applies to the inverting input of an amplifier, and that it is not directly connected to ground, either internally or externally.
     
    #2 Reply
  3. Aug 7, 2008 #3
    Wendy

    Moderator

    Mar 24, 2008
    21,175
    2,870
    It is not directly connected, but if you were to measure it with a meter it appears to be ground, hence the name. The op amp does an excellent job of making that point "appear" to be ground, even to instrumentation.
     
    #3 Reply
Loading...
Related Forum Posts:
  1. Gagneet

    Virtual ground

    Posted by Gagneet in forum: General Electronics Chat
    Replies:
    4
    Views:
    1,312
  2. CaptainPrice

    AGC circuit virtual ground

    Posted by CaptainPrice in forum: The Projects Forum
    Replies:
    5
    Views:
    3,814
  3. pete.york

    Virtual ground

    Posted by pete.york in forum: General Electronics Chat
    Replies:
    2
    Views:
    1,934
  4. cryosar

    virtual ground

    Posted by cryosar in forum: General Electronics Chat
    Replies:
    5
    Views:
    2,550
  5. haditya

    virtual ground

    Posted by haditya in forum: General Electronics Chat
    Replies:
    2
    Views:
    2,263
  6. nick

    virtual ground of OPA

    Posted by nick in forum: Homework Help
    Replies:
    2
    Views:
    2,542
You May Also Like:

  1. Update the Firmware in Your ESP8266 Wi-Fi Module

  2. Gallium Nitride Gaining Traction One Chip at a Time

  3. Introducing the PICAXE System


Load More