Operational Amplifier Circuits
The output voltage Vout is a sum of the input voltages with weighting factors given by the values of the resistors. If the input resistors are equal R1=R2=R3=R, Equation (1.3) becomes out (in12in in3 RF VVVV) R =− + + (1.4) The output voltage is thus the sum of the input voltages with a …
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