Op-amp performance is disrupted by EMI in a variety of ways. Reducing EMI in amplifiers using filters. How to mitigate EMI in Class-D audio amps. In this article, electromagnetic interference (EMI ...

In designs that omit a voltage amplifier, a shunt regulator can serve as an inexpensive op amp. Resistors R I and R set the power supply’s dc output voltage, and optocoupler IC 2 provides galvanic ...