Answer / srikrishna

zener diode is used as a voltage regulatory device..
because..
the voltage across the zener diode in reverse bias is
constant after reaching certain value i.e. breakdown
voltage.
normal diodes distorts at htis breakdown voltage but the
zener still runs after this voltage and keeps the voltage
across the diode constant even the supply voltage increses..

Answer / uday rathore

zener diod is used as a voltage regulaltor

Answer / munish kumar

Zener diode is used as a voltage regulator because it is
specially designed,heavily doped Si or Ge diode.We cannot
use "Normal semicondutor diodes" as voltage regulator
because they only conducts in forward bias region and acts
as open circuit (nearly) in reverse bias condition.

Since Zener is heavily doped,so its
depletion layer width is also very thin in reverse bias
condition as compared to normal diodes.

Answer / subhash chand

Zener diode in reverse bias is used as a voltage regulator . Because it has constant output voltage across it after reverse bias breakdown voltage.

Answer / anahita

a zener diode can be used as a voltage regulator to provide
a constant voltage from a source whose voltage may vary
over sufficeient range.The zener diode of zener voltage Vz
is reverse connected across the load Rl across which
constant output is desired.The series resistance R absorbs
the output voltage fluctuations so as to maintain constant
voltage across the load .It maintain resistance longly.

Answer / uday

7805 Ic

Answer / anand

Zendr diode

Answer / pratik adhikari

Zener diode is used as a voltage regulator device and the voltage across the zener diode in reverse bias is constant after reaching the breakdown voltage.

Answer / c.kumaresan

A silicon semiconductor device used as a voltage regulator
because of its ability to maintain an almost constant
voltage with a wide range of currents.

Answer / anshul

silicon semicindustor is used as voltage regulator coz it
has a ability to maintain constant voltage across wide
range of current...

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