Electrical – Op Amp DC multiplier


Is there a circuit (that only uses op-amp and resistors) that performs multiplication between two DC input signals v1 and v2? Similar to the Summing Amplifier but with multiplication.

Best Answer

The answer is: No there is no circuit that just uses op-amps and resistors that can multiply two voltages.

You can multiply one voltage times a resistor value. You can do things with log amplifiers and antilog amplifiers, you can do things with PWM, but all of those things (except the resistor value one) involve other (nonlinear) elements.