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An op-amp is a DC coupled amplifier composed of two main stages:
- differential input stage
- high gain output stage
By use of appropriate feedback networks around the op-amp all the mathematical operations of an analog computer can be implemented. Because of its versatility op-amps have found wide usage in electronic fields unrelated to its original usage in analog computers.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoamplifier consist of transistor. suppose if you take npn transistor there are three regions base,emitter,and collector. so if the signal is applied the electrons in emitter moves towards the base and the carrier concentration in the collector increases due to early effect so collector current increases. Amplifier has high out put impedance and low output impedance so if collector current increases and because of low output impedance signal is amplified
Wiki User
∙ 12y agoJim se poochh le, aur jawab bhi le le........
Wiki User
∙ 11y agoto amplify voltages, currents and power
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When diode is used as an amplifier it is operated in what?
Diodes are not amplifiers.
Why 3db line used in amplifiers?
its where the gain is max and stable
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
What are signal conditioners used for?
Signal conditioners are used for a variety of purposes. They can be used as amplifiers, electrical isolators, exciters, and cold junction compensators.
Why the name push pull is given to class B power amplifier?
Because two amplifiers are used to accomplish class B power amplifier. One is used to push the current and the other one is used to pull the current. These two amplifiers are almost same but one is connector supplied and the other one is emitter supplied.
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 antenna amplifiers used for?
Antenna amplifiers are used to strengthen the signal being supplied to an appliance such as your TV. Amplifiers are necessary when the signal is weak and interferes with your TV reception.
What are the most used instruments?
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.
Do guitars need capacators?
No, a capacator is used in amplifiers.
When diode is used as an amplifier it is operated in what?
Diodes are not amplifiers.
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.
What is the average frequency range for bass amplifiers?
Bass amplifiers are used to amplify the music that comes from a bass guitar. The average frequency range for bass amplifiers is between 25 and 250 watts.
Why 3db line used in amplifiers?
its where the gain is max and stable
What is the function of amplifiers?
A: Obviously is to amplify or to create a function to be used
What are the uses of an alpine amplifier?
Alpine amplifiers are used to amplify sound of digital equipment such as Subwoofers. You can purchase Alphine amplifiers online from retailers such as Amazon.
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
What amplifiers are used at a rock and roll concert?
The best amplifiers used in a rock and roll concert is Marshalls. It has the best sound quality and it works well for rock, heavy metal, country, blues, and jazz.
