Normally, there is a hole in the emitter terminal. In BJT Transistor, it has two terminals which is the emitter and the collector. And the metal wire connecting the base terminal to the emitter terminal is called a collector electrode. The metal wire connecting the source terminal to the base terminal is called a base electrode. The device can be used to both conduct and insulate the electrical current. BJT Transistor is a semiconductor device where the device has the source and the drain terminals. The abbreviation BJT stands for two junction transistor.

The input signal will be transferred to the collector and then the collector will transfer the high output to the external circuit.

When you make a base-emitter connection, the collector of the transistor will change its output and form a high output. The emitter terminal of a transistor is a hole in a certain position, there can be two kinds of emitter, one is called A-type and the other is called B-type. The collector terminal is connected to the base of transistor by a metal wire. The emitter terminal receives the base voltage. There are two pendants, one is called emitter and one is called collector.

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