Common collector amplifier circuit a

Common collector amplifier circuit a

 (1) The structure and key components of the common collector amplifier circuit
    are as shown in the figure. The key components of the common collector amplifier circuit are basically the same as those of the common emitter amplifier circuit. There are two differences:
one is that the collector The resistor & Mu goes to the emitter (denoted by Van), and the second is that the output signal is no longer taken from the collector but from the emitter.
    In this circuit, two bias resistors L and R are connected to supply power to the base of the transistor (b) through the power supply: Rc is
the load resistor of the emitter of the transistor (e); both capacitors serve as communication isolation. DC-acting coupling capacitor: resistor Rr. is the load resistor for loading the
output signal .
    Like common emitter transistor amplifiers, the biggest difference between NPN and PNP transistor amplifiers is the difference in power supply.
    Since the internal resistance of the power supply of the transistor amplifier circuit is very small, the positive and negative electrodes are equivalent to a short circuit for AC signals. Alternating current is equivalent
to the power supply, which means that the collector of the transistor (c) is equivalent to ground. The input signal is loaded between the base (b) and emitter (e) of the transistor and
the load resistor Gen, which is equivalent to loading between the base (b) and collector (c) of the transistor. The output signal is taken from the transistor. The emitter (e) of the
transistor is equivalent to being taken between the emitter (e) and the collector (c) of the transistor. Therefore, the collector (c) is the
common terminal of the input signal and the output signal, so it is called a common collector . Electrode amplifier circuit .