Difference Op Amp Circuit Diagram A difference amplifier / difference op amp amplifies the difference of two input signals. It functions as a subtractor. It has two inputs and one output, thus amplifies the difference between the voltages at the two inputs. The difference amplifier is useful for handling floating signal sources. The following schematic shows the Difference Op Amp Circuit Diagram. There are two resistors Rf and Rf ‘ as well as two Ri and Ri ‘ resistors.

For correct circuit operation, the two ratios p = Rf/Ri and q = Rf ‘/Ri ‘ must be precisely equal, then the Voutput will be calculated as:

vo = [q(p+1)/(q+1)]v2 – pv

If Ri = Ri ‘ and Rf = Rf ‘, the Voutput is:

vo = (v2 – v1) Rf/Ri



Related Post

Sony Aiwa F2100 TV Circuit Diagram
Daewoo XGA Color Monitor 531X Circuit Diagram
2003 Lexus ES300 Speed Sensor Wiring Diagram
1986 Fiat Uno Turbo Wiring Diagram and Electrical System Circuit
Mitsubishi Lancer Evolution EVO XIII Wiring Diagram and Electrical System