Zener Diode : A properly doped P-N junction diode has sharp break down voltage , when operated in reverse bias is called “Zener Diode”.
INVENTED BY :
The device was named after Clarence Melvin Zener, who discovered the Zener effect. Zener reverse breakdown is due to electron quantum tunnelling caused by a high strength electric field.
Zener Diode is used to generate low power stabilized supply rails from a higher voltage and to provide reference voltages for circuits, especially stabilized power supplies.They are also used to protect circuits from over-voltage, especially electrostatic discharge (ESD).Zener diodes are widely used in electronic equipment of all kinds and are one of the basic building blocks of electronic circuits.
ZENER DIODE AS VOLTAGE REGULATOR :
” The device constant output voltage even if input voltage & load current changes is called VOLTAGE REGULATOR “