The working principle of common collector amplifier circuit

The working principle of common collector amplifier circuit

After the signal passes through the common collector amplification circuit , it outputs a signal that is in phase and has almost the same amplitude (slightly smaller than the input signal ). Its working principle is
shown in Figure 1-15. It can be seen from the figure that U^TUk+U-H, then it can be seen. U Kuang U^-Uc, and the voltage Ube between the base and emitter of the transistor is much smaller than the voltage
on the load , so U m is almost equal to U^. In this circuit, only the current is amplified, so it is often used as a current amplifier.