P Type Semiconductor ‘P’ type semiconductor: Silicon is doped with acceptors (e.g. Boron or Aluminium atoms (of Group III of in Periodic Table), with 1 electron less compared to Silicon) This creates a half vacant bond with silicon.Mobile Positive Charge: ‘the Hole’ The half vacant

Diodes are simple device with 2 terminals – It allow current to only flow in 1 direction. Electron flows from ANODE –> CATHODE direction The diode characteristics can be placed in 3 regions Forward biased region VAK > V Forward ON (0.7-3 Volts) Reverse biased

Power Electronics is concerned with the control and conversion of electrical power using semicondcutor devices such as diodes, transistor, thyristor etc. commonly known as switches. It covers a very wide range of power level from a few wats as for example in the power suppliers