What is a discriminator in amplifier?

Answer 1

A discriminator in an amplifier is a circuit component that distinguishes between different signal levels or frequencies, typically used in communication systems to extract information from modulated signals. It converts an input signal into a corresponding output signal, often producing a binary output that indicates whether the input has crossed a certain threshold. Discriminators are commonly used in applications like FM demodulation, where they help recover the original message from the frequency-modulated carrier wave.