Javalab
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Lars Drud Nielsen ldn@oersted.dtu.dk |
In the (normal) case of a large open-loop gain of the opamp (typically >100 dB) the feedback mechanism will force the opamp input voltage difference to be virtually zero. In this limit the equivalent load resistance of the circuit will be determined solely by the resistance values.
Turn on the voltage source and check the circuit with different resistance values.