Adder circuit

Posted on Mar 28, 2007

Adder circuit commonly used inverting input, namely the inverting adder circuit. It was to the inverting input of the operational amplifier electrical path, based on the signal

Adder circuit
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voltage to be added through a resistor connected to the inverting input terminal of the operational amplifier. Adder circuit shown in Figure 7-5, which is having a three input inverting adder circuit. Wherein the input signal number eight ii, machine 2,1113 are N input from the inverting input terminal, pin feedback resistors, non-inverting input terminal P via the balancing resistor R4 connected to. The resistance value of the balancing resistor R4 vase should be Ri, R2, R3 and the parallel and Rr. The output voltage of adder circuit input voltage is equal to the sum of the branch, which kind of structure can be realized adder plurality of input signals.

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