Transistors

The 2N2222 is a type of NPN bipolar transistor, a type of semiconductor device used as an amplifier or switch in electronic circuits. The 2N2222 has three pins: the collector, the base, and the emitter. When a voltage is applied to the base, it controls the flow of current between the collector and emitter. This allows the 2N2222 to act as a switch or amplifier in a circuit. The 2N2222 is a popular choice for electronic projects due to its low cost, ease of use, and versatility.