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An op-amp is an operational amplifier. It is a type of circuit that takes two inputs and compares them. It amplifies the difference between them by a *very* high gain -- typically 100,000 to 10,000,000 times. That is a sometimes useful in itself, but almost always, op-amps are used with feedback loops. This means that there are external components, usually resistors and sometimes capacitors, to control the way it works. You can get much more useful effects from an op-amp by using feedback loops. The feedback loops are really the key to using an op-amp. Over a wide range, you get very predictable operation from almost any op-amp in the same feedback loop. The differences start to show up at high frequencies, high accuracy, and high power conditions. That's where you look for specialty op-amps. Otherwise, any typical op-amp usually works for a standard circuit. There are two meanings to this question. One is... how many kinds of op-amp circuits are there. The answer is, there are an infinite number, because you make those circuits by building feedback loops around the op-amp to perform various functions. Some examples of the most basic kinds are: inverting amplifier, non-inverting amplifier, summing amplifier, schmitt trigger, comparator, differential amplifier, integrator, etc. The other meaning of this question is, how many kinds of op-amp components as a building block are there. Well, there are many kinds of op-amp available commercially, made by companies like National Semiconductor, Texas Instruments, Linear Technology, Analog Devices, etc. Some of these excel at high-speed operation, some excel at accurate low-voltage operation, some excel at driving power loads with their outputs. Some are low-power. Some use FET inputs. Some use JFET inputs. You can even build your own op-amp from a handful of transistors and resistors, or even tubes and resistors. Go to Digikey.com or Mouser.com and search on op-amps, and see what you come up with. Thousands of different components.
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Why do guitar rockers choose tube amplifiers instead of transistor amplifiers?
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Why power amplifier are called as large signal amplifiers?
in general the CE amplifiers are called low-signal amplifiers as they use only small values of voltage as a source of input which cant be used in practical purposes, whereas power amplifiers deal with practical values of input and output voltages
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One can purchase a Marshall Plexi amplifier on online shopping sites such as EBay, Musicians Friend, or ZZounds. If looking to purchase offline, one may wish to visit their local music store.
How does a amplifiers work?
well you have to have a wank
Where can you buy good stereo amplifiers?
One can purchase good stereo amplifiers from various websites like Amazon or eBay. One could also visit a local hardware store and ask if they have any good stereo amplifiers for sale.
What are the two types of rf amplifiers?
A unidirectional amplifier & a Bidirectional amplifier
What is amplifier and types of amplifiers?
Amplifiers are electronic device that responds to a small input signal (voltage, current, or power) and delivers a larger output signal.
Where can you purchase phone amplifiers?
One can purchase phone amplifiers at many electronic stores. Best Buy has a good selection of amplifiers to choose from. Most of these amplifiers are backed by a 90 day warranty.
How much are the most expensive amplifiers?
Many Yamaha amplifiers can cost you around $499 or higher.
What types of applications are valve amplifiers used for?
A quick search of this incredible question brought fourth some greater insight into the matter. It turns out the applications valve amplifiers are used for vary from guitar amplifiers, satellite transponders, audiophile stereo amplifiers, military applications and high power radio and UHF television transmitters.
Where are some of the places which one could find Mesa Boogie guitar amplifiers?
If you go to the website for Mesa Boogie Online Store, you go to the first page. One the bottom right, you click on 'Guitar Amplifiers. That will give all the information you need. They have all the types of guitar amplifiers from 'Express 5.25 Plus' to 'Stereo Power Amplifiers'.
Where could one find Roland Amplifiers?
There are many places where one can find Roland Amplifiers. A good place is the website "Amazon" or the website "eBay" to find Roland Amplifiers online.
Where can one buy car audio amplifiers?
There are many retailers where one can purchase car audio amplifiers. Edmunds, Best Buy, Amazon, Crutchfield and eBay all sell car audio amplifiers for people to purchase.
Where can one get cheap amplifiers from Pioneer?
There are many places where one can purchase cheap Pioneer amplifiers. One should visit online retailers such as Amazon to find low pricing and customer reviews. These amplifiers are also available on eBay.
What are the most used instrument amplifiers?
The most used instrument amplifiers are also some of the most popular amplifiers namely Marshall, Crate and Fox amplifiers. The impedance of these amplifiers does not need to match making it perfect for instrument use.
What are two brands of home stereo amplifiers?
Two brands of home stereo amplifiers include McIntosh and Yamaha amplifiers. Other brands that also include home amplifiers are Atlona, Russound, Onkyo, Bose, and Pyle amplifiers.
Why positive feed amplifiers are called as regenerative?
The positive feed amplifiers are called regenerative because they increase the gain of the amplifiers.
