OpAmp - Differential Amplifier

110

02:33:00

In this configuration the OpAmp works as a differential amplifier.

Normally R1=R3 and R2=R4 to facilitate the design and minimize the influence of bias current.

In this case:
  Vou = (V+ - V-)*(R4/R3)

In this example R4 is the resistor of 20k and R3 the resistor of 10k.

Ps .: This simulation use DC signals because it's easier to see the numerical results and check with the formula. You can change to sine or square wave if prefer.

published 8 years ago

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.