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

Properties of a semiconductor, Properties of a semiconductor: What pr...

Properties of a semiconductor: What properties of a semiconductor are determined from a Hall effect experiment ? Sol. The Hall Effect experiment is used to determine th

Transformer of distribution, Transformer of distribution: Let be the t...

Transformer of distribution: Let be the transformer of distribution of the Face(Figure) 3 connected to the primary between phase a and c of a three-phase network of 23 kV. Bot

Bias circuit requirements, Bias circuit requirements: Signal requirem...

Bias circuit requirements: Signal requirements for Class A amplifiers The Q-point is placed thus the transistor stays in active mode (does not shift to operation in the s

What is capacitor, What is Capacitor -  A capacitor is an electrical d...

What is Capacitor -  A capacitor is an electrical device that is used to kept electrical energy.   -  The unit of capacitance is Farad. The symbol of capacitance is C.

Metals, Metals, Semiconductors, and Insulators For electrons...

Metals, Semiconductors, and Insulators For electrons to move within an applied electric field there have to be states available to them. A totally filled band ca

Representation of magnetic fields, The direction of the magnetic field line...

The direction of the magnetic field lines is given by 'Maxwell's Right-Hand corkscrew rule'  The thumb of the right hand indicates the direction of current flow in the wire and

Give the properties and application of bronze, Give the properties and appl...

Give the properties and application of bronze. Bronze : It is alloy of copper and tin. This alloy is very brittle and hard. Its corrosion resistance is better than brass. Bron

Realization of digital filter design, why we are going to realization of di...

why we are going to realization of digital filter after finding the H(z).

Find the current and voltage at input terminals of the line, Q. A source of...

Q. A source of impedance ¯ Z S = R S = 100  has an open-circuit voltage v S (t) = 12.5 cos ωot and drives a 75- transmission line terminated with a 75- load. Find the current

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