A diode is a semiconductor device that allows current to flow in one direction while blocking it in the opposite direction. It consists of two layers of semiconductor material, typically p-type and n-type, forming a p-n junction. Diodes are widely used in electronic circuits for rectification (converting AC to DC), signal modulation, voltage regulation, and protection against reverse polarity. Their unique unidirectional behavior makes them essential components in power supplies, signal processing, and various other applications.
Diode