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what is the Primary function of the common collector amplifier?

Anonymous

∙ 12y ago

Updated: 8/11/2023

current gain

Wiki User

∙ 12y ago

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Q: What is the Primary function of the common collector amplifier?

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What is the formula for VE in a common collector amplifier?

what is common collector

What is the other name for the common-collector amplifier?

emitter follwer

What is the applications of bootstrap amplifier?

it is a mechanism applied in an amplifier so as to raise it's input impedance.Mostly this mechanism is applied in a common collector(emitter follower) amplifier.

Why in common collector amplifier however you change value of resistance not amplifier in voltage?

The question does not quite make sense. It sounds like you are asking why does changing the emitter resistor in a class C common collector amplifier not affect the output voltage? If so, the answer is that the common collector is an emitter follower, meaning that the emitter will follow the base, less the base-emitter junction voltage, within the limits of hFe. The resistor is simply there to ensure output biasing when the base voltage goes low.

What is the effect of emitter resistance in common emitter amplifier?

The gain of a common-emitter amplifier is collector resistor divided by emitter resistor, or hFe, whichever is less. Since hFe depends on temperature, designing the amplifier to be dependent on resistance ratio makes it more stable. As such, the emitter resistance serves to stabilize the amplifier.

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Related Questions

What is the formula for VE in a common collector amplifier?

what is common collector

Application of a common - collector amplifier circuit?

Common collector amplifier can be used as a voltage buffer and in impedance matching

What is the other name for the common-collector amplifier?

emitter follwer

Why is a common collector used in the last stage of the amplifier?

becoz it gives good gain which is necessary for an amplifier.

Main use of a Common collector transistor amplifier is?

No voltage gain

What are the advantages and disadvantages in using common collector amplifier?

Current gain. At the cost of no voltage gain.

What is the applications of bootstrap amplifier?

it is a mechanism applied in an amplifier so as to raise it's input impedance.Mostly this mechanism is applied in a common collector(emitter follower) amplifier.

Which bjt transistor amplifier can be used as a voltage buffer?

the common collector can use as voltage buffer

Why is common emitter is greater than common collector?

Common-emitter gives more voltage gain because a common-collector amplifier has a voltage gain of 1. But a common-collector can have a power gain because the input impedance is much more than the output impedance.

Why is it the phase relationship between input and output signals of the common collector amplifier is in phase?

no phase shift

Why in common collector amplifier however you change value of resistance not amplifier in voltage?

The question does not quite make sense. It sounds like you are asking why does changing the emitter resistor in a class C common collector amplifier not affect the output voltage? If so, the answer is that the common collector is an emitter follower, meaning that the emitter will follow the base, less the base-emitter junction voltage, within the limits of hFe. The resistor is simply there to ensure output biasing when the base voltage goes low.

Why output of common emitter amplifier is inverted?

In a common emitter amplifier, the base-emitter current causes a corresponding collector-emitter current, in the ratio of hFe (beta gain) or collector resistance over emitter resistance, which ever is less. Since this ratio is usually greater than one, the differential collector current is greater than the differential base current. This results in amplification of the base signal. As you increase the base-emitter current, the collector-emitter current also increases. This results in the collector being pulled towards the emitter, with the result that the differential collector voltage decreases. This results in inversion of the base signal.

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