What are the applications of operational amplifiers?

Question

give examples

Answer 1

*The term operational amplifier or "op-amp" refers to a class of high-gain DC coupled amplifiers with two inputs and a single output. The modern integrated circuit version is typified by the famous 741 op-amp.
*Operational amplifiers are used in many places including:

In strain gage circuitry to measure deformations in structures like bridges, airplane wings and I-beams in buildings.
In temperature measurement circuitry for boilers and in high altitude aircraft in a cold environment.
In control circuits for aircraft, people movers in airports, subways and in many different production operations.
- The operational amplifier is a versatile component that can do many things in measurement, signal processing and control. That versatility is the largest reason that you find so many operational amplifiers being used!
Advantages:
High gain, on the order of a million
High input impedance, low output impedance
Used with split supply, usually +/- 15V
Used with feedback, with gain determined by the feedback network.
*Applications:
audio- and video-frequency pre-amplifiers and buffers
voltage comparators
differential amplifiers
differentiators and integrators
filters
precision rectifiers
precision peak detectors
voltage and current regulators
analogue calculators
analogue-to-digital converters
digital-to-analog converter
voltage clamps
oscillators and waveform generators

Pl. visit:
http://en.wikipedia.org/wiki/Operational_amplifier_applications

Answer 2

Operational amplifier applications:

A) Linear circuit applications
1 Differential amplifier
i) Amplified difference
ii) Difference amplifier
2 Inverting amplifier
3 Non-inverting amplifier
4 Voltage follower
5 Summing amplifier
6 Integrator
7 Differentiator
8 Comparator
9 Instrumentation amplifier
10 Schmitt trigger
11 Inductance gyrator
12 Zero level detector
13 Negative impedance converter (NIC)
B)Non-linear configurations
1 Precision rectifier
2 Peak detector
3 Logarithmic output
4 Exponential output

Answer 3

operational amplifiers were invented to make mathematical operations (sum, rest, multiply, derivate, integration and so on) with electrical signal. This allow to build the called "analog computer" which was used a lot before the digital computer (your pc). the main use of the analog computer was to simulate physical systems like rocket, cars, and so on, so that you can see the behavior of the system without the need of actually building it. With the digital computer you can do the same simulations easier.

operational amplifier keep being a very useful electronic device because it is a very flexible device. the flexibility of opamp is due to that the function of the opamp depends of the external component you use with it (resistors capacitors), and not of the opams itselt. so you can do with the same opamp many different thing: amplifiers, oscilators, mathematical computations, comparators, interfaces, and so on.

Answer 4

An OP AMPmay be used to perform many mathematical operations. this feature accounts for the name operational amplifier .it is used as analog inverter, a scale changer, a phase shifter,an adder,voltage to current convertercurrent to voltage converter ,dc voltage follower.it is used in making differential dc amplifier,bridge amplifier,stable ac -coupled amplifier.
u can contact me if u wanna know how it can be used in applications stated above

Answer 5

I use them for making amplfiers for instrumentation for launch vehicle (rocket) and satellite telemetry (they amplify signals from guages, like pressure gauges, temperature gauges, etc).

They are used in guitar amplifiers, hi-fi amplifiers, and guitar effects boxes (usually in the preamplifier stages).

They are used in cell phones, I-Pods, portable phones, TVs, just about all consumer electronics with any kind of audio output, or where filtering is needed (because Op Amps are used in active filters, too).


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