Principal of bipolar junction transistor, Electrical Engineering

Assignment Help:

Principal of Bipolar junction transistor:

A bipolar junction transistor (BJT) is a three-terminal electronic device that constructed of doped semiconductor material and might be employed in amplifying or switching applications. Bipolar transistors are so named as their operation includes both electrons and holes. Charge flow in a BJT is because of bidirectional diffusion of charge carriers beyond a junction among the two regions of different charge concentrations. This type of operation is contrasted with unipolar transistors, like field-effect transistors, in which only one carrier type is included in charge flow because of drift. By design, most of the BJT or bipolar junction transistor collector current is because of the flow of charges injected from a high-concentration emitter into the base in which they are minority carriers that diffuse toward the collector, and so BJTs are categorized as minority-carrier devices.

52_Bipolar junction transistor.png

Schematic symbols for PNP- and NPN-type BJTs.


Related Discussions:- Principal of bipolar junction transistor

DC generators, 3. Why the external characteristics of a DC shunt generator ...

3. Why the external characteristics of a DC shunt generator is more drooping than that of a separately excited generator?

Binary coded decimal to decimal conversions, Binary Coded Decimal to Decima...

Binary Coded Decimal to Decimal Conversions • Step1. Break up the Binary Coded Decimal number into 4 bit binary number, starting from the least significant binary bit. • Step2

Chemistry, explain why entropy of a gas increases with volume and tempeart...

explain why entropy of a gas increases with volume and tempearture

Digital electronics, design 4 bit binary coded decimal to excess 3

design 4 bit binary coded decimal to excess 3

Find the transfer function of a linear system, Q. The response y(t) of a li...

Q. The response y(t) of a linear system to an excitation x(t) = e -2t u(t) is y(t) = (t + 2)e -t u(t). Find the transfer function.

Compute the efficiency at one-half load, Q. A certain 10-hp, 230-V motor ha...

Q. A certain 10-hp, 230-V motor has a rotational loss of 600 W, a stator copper loss of 350 W, a rotor copper loss of 350 W, and a stray load loss of 50 W. It is not known whether

Find internal resistance across terminals, Q. In the Wheatstone bridge circ...

Q. In the Wheatstone bridge circuit shown in Figure, R 1 = 16, R 2 = 8, and R 3 = 40; R 4 is the unknown resistance. RM is the galvanometer resistance of 6 . If no current

System of forces.., Example of unlike coplaner parallel force''

Example of unlike coplaner parallel force''

Give a brief description of integrating circuits, Q. Give a brief descripti...

Q. Give a brief description of integrating circuits ? Integration is a summation of area. An integrating circuit produces an output voltage which is proportional to the area en

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