Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Forward and Reverse battery bias
In diagram below(a) the battery is arranged that is why the negative terminal supplies electrons to the N-type material. These types of electrons diffuse toward the junction. The positive terminal eliminates electrons from the P-type semiconductor, forming holes that diffuse toward the junction. If the battery voltage is sufficiently great to overcome the junction potential (0.6V in Si), the N-type electrons and P-holes merge annihilating each other. This frees up space in the lattice for more carriers to flow toward the junction. So, currents of P-type and N-type majority carriers flow in the direction of the junction. The recombination at the junction permits a battery current to flow via the PN junction diode. Such type of a junction is said to be forward biased.
Figure: (a) Forward battery bias repells carriers toward junction, where recombination results in battery current. (b) Reverse battery bias attracts carriers toward battery terminals, away from junction. Depletion region thickness increases. No sustained battery current flows.
If the battery polarity is inverted like in Figure above (b) majority carriers are attracted away from the junction in the direction of the battery terminals. The positive battery terminal attracts N-type majority carriers, electrons, away from the junction. The negative terminal attracts P-type majority carriers, holes, away from the junction. This raises the thickness of the non conducting depletion region. There is no recombination of majority carriers; so, no conduction. This arrangement of battery polarity is known as the reverse bias.
Determine the node voltage by using KCL: Determine the node voltage V and then current flowing through each element by using KCL. Solution Apply KCL at the node whose
The field winding of a 200 V d.c. machine has a resistance of 20? and an inductance of 500mH. Calculate: (a) The time constant of the field winding (b) The value of curr
how does Proportional band affect the performance of control system?
1. Establish importance of Distribution Planning with help of suitable example. 2. Explain different distribution planning methods. 3.Explain the six level interv
Q. Define waves and transmission lines? In basic circuit theory we neglect the effects of the finite time of transit of changes in current and voltage and the finite distances
Define Sampling at a Very High Frequency? By sampling at a very high frequency compared with the signal frequency, we can ensure that we do not miss important information. Anot
DCR Decrement Instruction This instruction is used to decrement the contents of any register or memory location by one. There are two formats.
state seven main requirement for insulators
Discuss the properties and uses of ALNICO. Alnico : It is an alloy of iron, nickel, cobalt and small amount of copper and aluminium. Properties are - 1. Its saturation f
Discribe the ultrasonic machining with main emphasis on the following (a) Basic working Principle and machining set up (b) Accuracy and surface complete on work materials
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd