transistor current amplifier

transistor current amplifier

 (2) Basic functions of common collector
amplifier circuit     Common collector amplifier circuit outputs signals from the emitter
. The signal waveform and phase are basically the same as the input signal.
Therefore, it is also called emitter outputter or emitter follower, or emitter for short. Follower
, often used as a buffer. Figure 1-13 shows
the basic common collector amplifier circuit. Common collector transistor amplifiers are often used
as current amplifiers . They are characterized by high input impedance and
large current gain, but there is almost no
amplification in the amplitude of the voltage output, that is, the output voltage is close to the input voltage. Due to the high
input impedance, the output Due to its low impedance characteristics and load carrying capability, it can also be used as an impedance converter.