Diodes: Types and Applications
Diodes is a two terminal electronic device which allows the flow of current in only one direction and high resistance in opposite direction. The most common diode used currently are p-n junction diode. The diodes are of different types as illustrated below: p-n junction Diodes Avalanche Diodes Zener Diodes LED(light emitting diode) Photo Diodes Sckottky Diodes Tunnel Diodes Gunn Diodes Laser Diodes Pin Diodes p-n junction diode: A pn junction diode is made up of silicon or germanium doped at certain level. Any pentavalent or trivalent impurities can be added to form pn junction diode. It can be either a donor if pentavalent impurities are added or acceptor when trivalent impurities are added. p-n junction diodes are the electronic components that can allow the flow of current in only forward direction and gives 100 percent resistance in reverse direction. Avalanche Diode: These are the diodes which conducts in the reverse direction when the reverse bias vol...