2006-11-03 08:42:28 · 5 answers · asked by Jermaine 2 in Science & Mathematics ➔ Engineering
The op-amp is basically a differential amplifier having a large voltage gain, very high input impedance and low output impedance. The op-amp has a "inverting" or (-) input and "noninverting" or (+) input and a single output. The op-amp is usually powered by a dual polarity power supply in the range of +/- 5 volts to +/- 15 volts.
One of the most common applications of this device is the propagation of sound, like a line driver for your stereo. The signal from an external source is very low-powered ... the operational amplifier is used to boost the signal to where it can "drive" the speaker to reproduce the sound.
Anywhere a signal needs to be boosted - and distortion minimized - you can find an op-amp configuration of some sort.
2006-11-03 08:47:34 · answer #1 · answered by CanTexan 6 · 0⤊ 0⤋
Op-amps are electronic pieces, and they are used in every single electronic device you have in your house. this piece is made of two elements Ge and Si and this part has 5 leads, two of them are used to energize the OP amp, lets say 12 volts another one is the output another one is ground and the last one is the input voltage the OP amp behaviour is that when the input voltage reaches the 12 volts you will have an output voltage at the output lead of exactly 12 volts.
2006-11-03 08:55:06 · answer #2 · answered by menlopark 1 · 0⤊ 0⤋
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.
2006-11-03 08:43:42 · answer #3 · answered by Drofsned 5 · 1⤊ 1⤋
I don't know if this is the answer you're looking for, but in the music business we use them for sound production....operational amplifiers.
2006-11-03 08:45:34 · answer #4 · answered by Anonymous · 0⤊ 0⤋
click here:http://en.wikipedia.org/wiki/Operational_amplifier
http://en.wikipedia.org/wiki/Op_amp_applications
2006-11-03 08:43:58 · answer #5 · answered by Anonymous · 0⤊ 0⤋