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

Effect of feedback on stability, Q. Effect of feedback on stability? Le...

Q. Effect of feedback on stability? Let us consider the direct transfer function of the unstable first-order system of Figure (a). The transfer function is given by whe

What are encoder and the decoder, There are zillions of things in electroni...

There are zillions of things in electronics known as encoders. You can look up LCDs and NAND gates as well and this is actual basics.

Show capital asset pricing model, Q. Show Capital asset pricing model? ...

Q. Show Capital asset pricing model? This model was developed by the William F Sharpe ( 1990 Nobel prize winner in the economy ) and john linter in 1960. The model attempt to c

Two stage rc coupled amplifier, Q. Two Stage Rc Coupled Amplifier? ...

Q. Two Stage Rc Coupled Amplifier? It is the most popular type of a multistage amplifier because it is cheap and provides excellent audio fidelity over a wide range of fre

Explain commercial adcs and dacs, Explain Commercial ADCs and DACs? Ana...

Explain Commercial ADCs and DACs? Analog interface chips (AICs), like those in the Texas Instruments TLC32040 series, consist of all type of the analog components that explaine

Internal frequency compensation of operational amplifier, Q. Internal Frequ...

Q. Internal Frequency Compensation of operational amplifier? Some op amps, such as the 741, have internal RC networks which are intentionally designed to reduce gain at high fr

Determine the apparent power and the reactive power, Q. A balanced electric...

Q. A balanced electrical industrial plant load of 9.8 MW with 0.8 lagging power factor is supplied by a three-phase 60-Hz system having a maximum rating (load-carrying capacity) of

Induction heating levitation, Using a levitation coil, you levitate a condu...

Using a levitation coil, you levitate a conductive object in the magnetic field and heat within that field. I have 2 sample report and I would like you to write some thing similar

Determine the coil resistance, Relays a) Sketch the schematic symbol for...

Relays a) Sketch the schematic symbol for a relay with a single pole changeover switch b) Determine the coil resistance and determine the current at 12Vdc c) Connect the r

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