Common Base
The Common Base configuration is a type of transistor amplifier circuit where the base terminal is common to both the input and output. In this setup, the input signal is applied between the emitter and base, while the output is taken from the collector and base. This configuration is known for providing high voltage gain and low input impedance, making it suitable for specific applications.
In a Common Base amplifier, the transistor operates in a way that the output current is largely independent of the input voltage. This results in a stable performance, particularly in radio frequency applications. The configuration is less commonly used than the Common Emitter and Common Collector setups but is valuable in certain niche areas of electronics.