Characteristics:
There are some characteristics of common base transistor amplifier which are given below,
- It has very high output resistance.
- It has low input resistance.
- Its voltage gain is of the order of 1500.
- Its current gain is less than unity.
- Its power gain is of the order of 30 dB.
- Its input and output signals are in phase. i.e. there is no phase reversal between input and output signals.
Applications:
There are some applications of common base transistor amplifier which are given below,
- It is mainly used at high frequencies where low source resistance is common.
- It is used for impedance matching in circuits with very low output resistances to those with a high input resistance.
Common base transistor amplifier