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Because of the geometry of the common collector configuration, changes in base voltage appear at the emitter. Said another way, what happens at the base pretty much happens at the emitter, and the emitter can be said to "mirror" or "follow" the base. The emitter is a follower of the base, and the name emitter follower appeared and was used.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoBecause of the geometry of the common collector configuration, changes in base voltage appear at the emitter. Said another way, what happens at the base pretty much happens at the emitter, and the emitter can be said to "mirror" or "follow" the base. The emitter is a follower of the base, and the name emitter followerappeared and was used.
Wiki User
∙ 12y agoThe transistor monitors continuously Vdiff and adjusts its emitter voltage almost equal (less VBEO) to the input voltage by passing the according collector current through the emitter resistor RE. As a result, the output follows the input voltage variations and hence name emitter follower.
Ninan V. Mathew
Wiki User
∙ 13y agoA: Because the signal output is taken off the emitter as opposed to the base that actually has the same signal amplitude. The difference is better current drive capability
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What is the advantage of emitter follower?
The advantage of the emitter follower is that it has a positive gain of 1.
What kind of feedback is used in emitter follower?
emitter follower is a type of negative feedback ,
What are the differences between Emitter follower and source follower?
no difference between emiter follower and source follower
What is the difference between a CB amplifier and CE and emitter-follower?
I think you mean a common emitter amplifier, which is an amplifier of voltage. Emitter-follower or common collector amplifiers are used to match impedances, or to amplify power or current. The emitter-follower is a type of common emitter circuit that has a resistor between the emitter and ground. The output signal is taken from the point between the emitter and its resistor.
What is emitter follower?
A: When a signal is not amplified but simply taken from an emitter the reason is that the emitter will provide better current capabilities
Why common current is called an emitter follower?
It is not called that.
Why collector current is called an emitter follower?
It is not. You have something confused.
What is the advantage of emitter follower?
The advantage of the emitter follower is that it has a positive gain of 1.
What kind of feedback is used in emitter follower?
emitter follower is a type of negative feedback ,
Which transister is used in emitter follower circuit?
A: Any transistor of either polarity can be used as an emitter follower, The purpose of an emitter follower is to provide current to the load since it cannot provide any voltage gain
What are the differences between Emitter follower and source follower?
no difference between emiter follower and source follower
What is the difference between a CB amplifier and CE and emitter-follower?
I think you mean a common emitter amplifier, which is an amplifier of voltage. Emitter-follower or common collector amplifiers are used to match impedances, or to amplify power or current. The emitter-follower is a type of common emitter circuit that has a resistor between the emitter and ground. The output signal is taken from the point between the emitter and its resistor.
What is emitter follower?
A: When a signal is not amplified but simply taken from an emitter the reason is that the emitter will provide better current capabilities
What is Voltage gain of emitter follower?
The voltage gain of an emitter follower is theoretically 1. In practice, due to losses, it is marginally less than one.
Why emitter follower is used in circuits?
The (Class C, Common Collector) Emitter Follower is used to amplify the available current from a voltage driving circuit that might be disturbed by the load impedance. If the actual voltage value is important, the emitter follower is often teamed up with an opamp which sets the emitter voltage based on the input voltage.
What is the effect of no emitter resistance on common emitter amplifier?
Limit current through emitter, Often the resistance is the load itself. So the restatnce limits current on what otherwise would act as a voltage follower.
Why npn transistor is called emitter follower?
because one of the terminals is common for for both i/p and o/p
