2006-12-03 01:44:07 · 3 answers · asked by josh 1 in Science & Mathematics ➔ Engineering
An operational amplifier, usually referred to as an 'op-amp' for brevity, is a DC-coupled high-gain electronic voltage amplifier with differential inputs and, usually, a single output. In its ordinary usage, the output of the op-amp is controlled by negative feedback which, because of the amplifier's high gain, almost completely determines the output voltage for any given input.
Op-amps are among the most widely used electronic devices today, being utilized in a vast array of consumer, industrial and scientific devices. General-purpose integrated op-amps of standard specification sell for well under one U.S. dollar. Modern designs are electronically more rugged than earlier implementations and some can sustain direct short-circuits on their outputs without damage.
For more pl. visit:
http://en.wikipedia.org/wiki/Operational_amplifier_applications
2006-12-03 02:39:33 · answer #1 · answered by Anonymous · 1⤊ 0⤋
An Operational Amplifier is an Integrated Circuit well designed so that the gain and other parameters of the amplifier can be varied by using external passive components.
The Common charecteristics of opamp are
1. High Gain (>50000)
2. High Input Impedance.
3. High Common mode signal rejection capability.
Operational Amplifiers are widely used in all elecronic circuits.
For Complete details about Opamps u can refer the text book
Operational Amplifiers - Gaykwad
2006-12-03 02:42:02 · answer #2 · answered by Ravi Kiran 1 · 0⤊ 0⤋
An operational amplifier or popularly known as Op-Amp, is a solid state IC with transistors that uses external feedback to control its functions. It has a very high gain
2006-12-03 01:46:46 · answer #3 · answered by richard_beckham2001 7 · 0⤊ 1⤋