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

What is meant by wait state, What is meant by Wait State? This state is...

What is meant by Wait State? This state is used by slow peripheral devices. The peripheral devices can transmitted the data to or from the microprocessor by using READY input l

Use delta-wye transformation for network reduction, 1555_Use delta-wye tran...

1555_Use delta-wye transformation for network reduction.png what is the solution to this particular problem?

UJT Help, What''s the formula for the VB2'' in a UJT?

What''s the formula for the VB2'' in a UJT?

Mr, what is pole core and pole shoe in a dc machine

what is pole core and pole shoe in a dc machine

Sampling of digital communication systems, Q. Sampling of digital communica...

Q. Sampling of digital communication systems? Sampling of an analog signal makes it discrete in time. A bandlimited signal can be recovered exactly from its samples, taken peri

Illustrate sources and loads, Q. Illustrate Sources and Loads? A source...

Q. Illustrate Sources and Loads? A source-load combination is represented in Figure. A node is a point at which two or more components or devices are connected together. A part

Illustrate frequency-shift keying, Q. Illustrate Frequency-shift keying? ...

Q. Illustrate Frequency-shift keying? Digital transmission by FSK is a nonlinear modulation method that is appropriate for channels that lack the phase stability needed to perf

Show jkff connected as a t flip-flop, Q. For a JKFFwith JK = 11, the output...

Q. For a JKFFwith JK = 11, the output changes on every clock pulse. The change will be coincident with the clock pulse trailing edge and the flip-flop is said to toggle, when T = 1

Determine the signal to noise ratio, Your manager has requested you to revi...

Your manager has requested you to review current techniques for reducing, or eliminating, the effects of external interference upon electronic circuits. He requires a short report

Comparison between motorola processors and intel processors, Differentiate ...

Differentiate between Motorola processors and INTEL processors. Comparison between Motorola processors and INTEL processors: AMD/Intel processors are actually about similar t

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