Reverse bias, Electrical Engineering

Assignment Help:

Reverse bias

Reverse biased generally refers to how a diode is employed in a circuit. If a diode is reverse biased, the voltage at the cathode is gets higher than that at the anode. Hence, no current will flow till diode breaks down. Connecting the P-type region to the negative terminal of the battery and the N-type region to the positive terminal corresponds to reverse bias. The connections are demonstrates in the following diagram: 

728_Reverse Bias 2.png

Figure: (a) Blocks of P and N semiconductor in contact have no exploitable properties. (b) Single crystal doped with P and N type impurities develops a potential barrier.

This type of separation of charges at the PN junction constitutes a potential barrier. This potential barrier has to be overcome through an external voltage source to form the junction conduct.

523_Reverse Bias 1.png

Figure: A silicon p-n junction in reverse bias.

The creation of the junction and potential barrier occurs during the manufacturing process. The magnitude of the potential barrier is a function of the materials employed in manufacturing. Silicon PN junctions comprises a higher potential barrier than germanium junctions.


Related Discussions:- Reverse bias

Design a water supply scheme for a station, Q. Design a water supply scheme...

Q. Design a water supply scheme for a station, adopting the following data - a) Source of water - River flow at a distance of 1 km. b) Requirement of water - 1 lack gallons p

General equivalent circuits, What we have seen for practical power supplies...

What we have seen for practical power supplies applies to any  electrical circuit provided it contains only linear components

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

Ask question #Minimum 300 words accepted#

RC phase shift oscillator, For the RC phase-shift oscillator if c=1pF and R...

For the RC phase-shift oscillator if c=1pF and R=10K determine the value of Rf

Explain the steps of the evolution of the microcontroller, Question: a)...

Question: a) Give one reason why a "subroutine" could be written into the body of the main program. b) With the help of the diagram below, write down the sequence of the ni

Compute the smallest load resistance, Q. A practical voltage source is repr...

Q. A practical voltage source is represented by an ideal voltage source of 30 V along with a series internal source resistance of 1.2 . Compute the smallest load resistance that c

Unconditional jump - jump instruction , Unconditional Jump JMP ( Uncon...

Unconditional Jump JMP ( Unconditional Jump ) Instruction: This  instruction is used to transfer  the execution to the  specified  memory  address unconditionally ( does not c

Interrupt structure of the 8085 microprocessor, List the four instructions ...

List the four instructions which control the interrupt structure of the 8085 microprocessor. DI ( Disable Interrupts ) EI ( Enable Interrupts ) RIM ( Read Interrupt Masks

Digital Electronics, You are expected to do the experimentation on digital ...

You are expected to do the experimentation on digital electronics and realize the result...

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