Final answer:
The emitter terminal is common to both the input and output in a Common Collector (CC) transistor circuit. Transistors function by using a small base current to control a larger collector current.
The collector current is a multiple of the base current, determined by the current gain.
Step-by-step explanation:
In a Common Collector (CC) transistor circuit, the emitter terminal is common to both the input and output signals. When you are dealing with a junction transistor, it comprises three main parts: the emitter, base, and collector. The base voltage is used to control the electric current flowing from the emitter to the collector.
The current that controls this is known as the base current. A small base current can regulate a much larger collector current, allowing the transistor to act as an amplifier.
The relationship between the base current and collector current is also represented by the current gain (also called β) of the transistor.
For example, if a transistor has a base current of 4.4 A and a current gain of 1126, the collector current can be calculated by multiplying the base current by the current gain, resulting in a significantly higher collector current.