Diode

Anode- positive part of the diodeCathode- negative part of the diode.Semi-Conductor- half insulator and half conductor.

Diode is an electronics component and a semi-conductor material that allows the flow of current in one direction.

Advantages of Diodes

Smaller in size

Lighter

No filament to warm up

Less power consumption

Functions of Diodes

Detection- detect radiant energy (crystal diode)

Voltage regulation- can control the voltage (zener diode)

Rectification- convert AC to DC (rectifier diode)

LED- Light Emitting DiodeA light-emitting diode (LED) is a semiconductor light source. LEDs are used as indicator lamps in many devices, and are increasingly used for lighting