Question

A discriminator circuit is which of the following circuits?

(a) Wheatstone bridge

(b) Instrumentation amplifier

(c) Astable multivibrator

(d) Schmitt trigger

This question was addressed to me during an interview for a job.

My doubt is from Pulse Height Analyser topic in section Radiochemical Techniques of Analytical Instrumentation

Answer 1

Correct choice is (d) Schmitt trigger

For explanation I would say: A discriminator circuit is a Schmitt trigger circuit. There are two discriminator circuits in pulse height analyser.