Depletion zone in p-n junction, Electrical Engineering

Assignment Help:

Depletion Zone in P-N Junction

The power of the depletion zone electric field gets increases as the reverse-bias voltage increases. One time the electric field intensity increases further than a critical level, the p-n junction depletion zone breaks-down and current starts to flow, generally by either Zener or avalanche breakdown processes. Both of these types of breakdown processes are non-destructive and are reversible, so long as the amount of current flowing does not reach levels which cause the semiconductor material to overheat and cause thermal damage.

This effect is employed to one's advantage in zener diode regulator circuits. Zener diodes have a specific - low - breakdown voltage. A standard value for breakdown voltage is for example 5.6V. The meaning of this is that the voltage at the cathode can never be more than 5.6V higher than the voltage at the anode, since the diode will break down - and therefore conduct - if the voltage gets any higher. This efficiently regulates the voltage over the diode.


Related Discussions:- Depletion zone in p-n junction

#boiler troubles, Ask question #Minimum 300 words accepted#

Ask question #Minimum 300 words accepted#

Op-amp amplifier, A voltage signal generated by a sensor conditioning circu...

A voltage signal generated by a sensor conditioning circuit varies from -0.5V to +0.5V . The signal from the sensor is to be connected to the analog to digital  converter which onl

What is the function of gate signal in 8254 timer, What is the function of ...

What is the function of gate signal in 8254 timer? The  8254 has three independent 16-bit counters, which can be programmed to. Work in any one of possible six modes. Every cou

Define gray code - bcd to decimal conversion, Define Gray Code - bcd to dec...

Define Gray Code - bcd to decimal conversion? The Gray Code is a variation on binary code in which only 1 bit is changed from the preceding number. The bit so as to changes is

Hot line maintenance, how do you define the expertise for this hot line mai...

how do you define the expertise for this hot line maintenance?

Show the enhancement of mosfet, Q. Show the Enhancement of MOSFET ? Her...

Q. Show the Enhancement of MOSFET ? Here also the slab of p type material called the substrate is provided. The substrate is connected to a source terminal. Many discrete devic

Negative voltage regulator series, Negative Voltage Regulator series with N...

Negative Voltage Regulator series with Nine voltage options - IC 7900 Series The IC 7900 series of fixed output negative voltage regulators are complements to the 7800 seri

Explain about adaptive control system, Q. Explain about Adaptive Control Sy...

Q. Explain about Adaptive Control System? Another type of control system that makes use of the computer is known as adaptive control, which is functionally represented in Figur

Determine the advantages of e-nrz over nrz, 1. A modi?ed NRZ code known as ...

1. A modi?ed NRZ code known as enhanced-NRZ (E-NRZ) operates on 7-bit words; invert- ing bits 2,3,6 and 7; and adding one parity bit to each word. The parity bit is chosen to make

Triac - power semiconductor devices , Triac  As the  name  suggests T...

Triac  As the  name  suggests TRIAC  is advice which  has three  electrodes and works  on AC.  The three terminals of triac are MTI ( Main Terminal ) MT2 ( Main  terminal ) an

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd