Operational amplifier: The ideal op amp is an amplifier with infinite input impedance, infinite open-loop gain, zero output impedance, infinite bandwidth, and zero noise. It has positive and negative inputs which allow circuits that use feedback to achieve a wide range of functions. Using op amps, it's easy to make amplifiers, comparators, log [..]

Operational Amplifier. An entirely fictional device concieved to bring horror to electronics students.

short for operational amplifer. is a comparitor in its basic state but can be modified into things like summing amplifiers and shmitt triggers

Short for Operational Amplifier (an amplifying circuit used in most audio devices).

An electronic circuit element that behaves like a voltage-controlled voltage source. It is designed to perform mathematical operations of addition, subtraction, multiplication, division, differentiation and integration.