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Emitter Repeater (Current Amplifier)

Lecture




Emitter Repeater (Current Amplifier)

An amplifier in which the transistor is connected in a circuit with a common collector is called a current amplifier.
The main resistor, which is removed from the output voltage, is included in the emitter circuit. The collector is connected to a common point with the ground of the amplifier, since Rвн of the Ek power supply is small.

  Emitter Repeater (Current Amplifier)

Main settings:

  Emitter Repeater (Current Amplifier)

Gain

  Emitter Repeater (Current Amplifier)

Output impedance

  Emitter Repeater (Current Amplifier)

Current gain

  Emitter Repeater (Current Amplifier)

Comparing the current amplifier with the voltage amplifier we can draw the following conclusions:
input and output voltages are in the same phase;
input impedance (1 + h21) times greater than in the UNIVERSITY;
output impedance (1 + h21) times less than in the UN

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Electronics, Microelectronics, Element Base

Terms: Electronics, Microelectronics, Element Base