What is a conventional diode?

A conventional diode is a semiconductor device that allows current to flow in one direction while blocking it in the opposite direction. It is typically made from materials like silicon or germanium and has two terminals: the anode and the cathode. When the anode is at a higher voltage than the cathode, the diode conducts; when the voltage is reversed, it does not conduct. Diodes are commonly used in rectification, signal modulation, and protection circuits.