Bipolar Transistors – BJT (16423)

Bipolar Junction Transistors (BJTs) are semiconductor devices used for amplification and switching in electronic circuits. They consist of three layers of semiconductor material, forming two p-n junctions. BJTs are classified into two types: NPN and PNP, based on their doping structure. These transistors are widely used in analog and digital circuits, including amplifiers, oscillators, and switching regulators. Their ability to control large currents with small input signals makes BJTs versatile and valuable in various applications.