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  1. kng

    Virtual ground concept of OPAMP

    I do not know if it has exceeded the specs. The simple inverting amplifier circuit is setup as such: http://www.phys.ualberta.ca/~gingrich/phys395/notes/node103.html where, for example: RI=2.7K Ohm, RF=2.7K Ohm. The maximum value of Vin can only be about 4 V. Any higher value will break down...
  2. kng

    Virtual ground concept of OPAMP

    May I ask when will the virtual ground property fail? As I was setting up the simple inverting amplifier with an opamp (LM324), with the positive node grounded, the negative node only follows the virtual ground property up to a certain voltage. Any increase that voltage, the virtual ground...

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