The virtual Ground

Discussion in 'Homework Help' started by Andy91, Dec 24, 2009.

  1. Andy91

    Thread Starter New Member

    Oct 18, 2009
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    I am a bit confused about the virtual ground. The voltage at node A is apparently at 0V, I can't seem to except this. To me the total voltage should be V2 + V1 and should be shared across the two resistors. Therefore to me the voltage at A should be (v1+v2)R2/R1+R2. I've been pondering over this all morning and understanding this would help me understand how the inverting OP-AMP works, I get easily confused so please explain as simply as possible. Cheers
     
  2. Jony130

    AAC Fanatic!

    Feb 17, 2009
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  3. Wendy

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