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# How a transistor acts as an amplifier?

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###### 2010-12-28 04:24:26

A transistor does not act as an amplifier. It is used as a component in an amplifier circuit.

## Related Questions

That depends on both the input signal and the type of amplifier the transistor is used in.

When transformer is used in step up mode then we can use transformer as amplifire

A PNP transistor has no advantage or disadvantage over an NPN transistor in its ability as an amplifier. Rather, the current-handling capacities of the transistor determine if it's usable as an amplifier.

Only because the circuit that its embeded in is designed that way. Remember, a transistor is basicly an amplifier ... only if you design everything to go to the extreams will it act as a switch.

A transistor can be used as an amplifier because the electrons in the base are multiplied by a gain factor to give the collector current.

it is a combination of two transistors connected in series. the emitter of transistor t1 is connected to the base of transistor t2 . now the total circuit acts as a single transistor. this combination will gives high gain, as the gain is multiplied.

A transistor can act as an amplifier. An amplifier you use for music might have many transistors as well as many other types of components. Transistors have other applications as well.

A: A transistor is a voltage amplifier and a tube is a current amplifier. A tube needs emission power to function a transistor does not.

it doesn't have to be. depends on design of amplifier using transistor.

A transistor is an electronic component. By itself it has little use. An amplifier is a complete, functional circuit, generally made up of several components. A transistor can be a component part of an amplifier, however an amplifier may be constructed without any transistors (using vacuum tubes instead, for instance).

A Unijunction Transistor is a transistor that acts solely as a switch.

cascade: the output of one amplifier stage is connected to the input of another amplifier stages, it's also connected in series. cascode: it said to be cascode, when it has one transistor on the top of another where a common emitter transistor drives a common base transistor.

A vacuum tube is a current amplifier where the transistor amplifies voltageA tube is a voltage amplifier. A transistor is a current amplifier. A tube is an older design that requires substantial voltage to operate correctly. A transistor is a semiconductor device that operates on relatively low voltage.

transistor has 2 output 1 and 0 so can be used as a switch

It lies in middle of the DC load line of that Amplifier.

Biasing is used in a transistor amplifier circuit in order to place the transistor as nearly as possible in the center of its linear region. Transistors have cutoff, linear, and saturation regions. Too little bias current, and you enter cutoff - Too much, and you saturate. Both conditions cause distortion when you attempt to use the transistor as an amplifier, as opposed to a switch.

Based on the application, a transistor can be used as a switch or a signal amplifier in a circuit. - Neeraj Sharma

common emitter amplifier can be where we want phase shift of 180 and as a current amplifier

With a common emitter amplifier it's the emitter that is usually grounded.

amplifier consists of active components like transistor fet etc,. for example transistor, it produces high output is common emitter configuration. when u give weak signal to the base of the transistor and the output is taken in collector terminal(amplitude of the weak is increased, so the output is high ) its known as amplifier

depends on the circuit it is used in:CE/CS is inverting voltage amplifierCC/CD is noninverting current amplifierCB/CG is noninverting voltage amplifier

at full input, if the transistor is working, the value of capacitor will be 0.

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