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

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Q: Why a transistor is used as a amplifier and switch?
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Related questions

How transistor acts as a amplifier?

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


What is use of bipolar junction transistor?

amplifier, switch, oscillator, etc.


When a PNP transistor is connected in a circuit it can be used as a power amplifier because?

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.


What component is typically used as an amplifier?

A transistor


What is an unbiased transistor?

An unbiased transistor is one being used with no bias voltage to offset its operating point. If the input signal is very small it still can operate as an amplifier but the output will be non-linear. One use for an unbiased transistor is when the transistor is used as a switch, turning it on or off.


When transistor acts as an amplifier then does its output voltage increase or decrease?

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


What is difference between transistor and amplifier?

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).


Why a transistor acts as a switch?

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.


What is the difference between a transistor used as a switch and an amplifier?

A transistor used as a switch is operated in saturated mode, where the ratio of base-emitter current over collector-emitter current is far more than hFe, or beta gain. The transistor is either fully on or fully off in this mode. A transistor used as an amplifier is operated in linear mode, where the ratio of base-emitter current over collector-emitter current is equal to or less than hFe, or beta gain. The transistor is partially on in this mode, and is operating as a current controlled current sink.


Is a transistor a small electronic switch?

A transistor is used to switch electronic signals.


What is transistor BC557?

it is a transistor used in IR TOGGLE SWITCH. :-)


Why is it necessary to bias a transistor when it is to be used as an amplifier?

Biasing is necessary in a transistor circuit to keep the transistor working. Without proper biasing, the circuit will fail