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!
Bipolar junction transistor:
Transistors are so named as they conduct via using both majority and minority carriers. The bipolar junction transistor that is abbreviated as BJT, the first type of transistor to be mass-produced, is a mixture of two junction diodes, and is made up of either a thin layer of p-type semiconductor sandwiched among the two n-type semiconductors (an n-p-n transistor), or a thin layer of n-type semiconductor sandwiched among the two p-type semiconductors (a p-n-p transistor). This construction generates two p-n junctions: a base-emitter junction and a base-collector junction, separated via a thin region of semiconductor termed as the base region (two junction diodes wired together with no sharing an intervening semiconducting region will not make a transistor).
The BJT or bipolar junction transistor has three terminals that are corresponding to the three layers of semiconductor - an emitter, base, and collector. It is helpful in amplifiers as the currents at the emitter and collector are controllable through a comparatively small base current." In the active region, the emitter-base junction is forward biased and electrons are injected into the base region, in an NPN transistor operating. Since the base is narrow, most of these electrons will diffuse into the reverse-biased (electrons and holes are made at, and move away from the junction) base-collector junction and be swept into the collector; may be one-hundredth of the electrons will recombine in the base that is the dominant mechanism in the base current. Through controlling the number of electrons which can leave the base, the number (digit) of electrons entering the collector can be controlled. Collector current is almost β (common-emitter current gain) times the base current. It is commonly greater than 100 for small-signal transistors but can be much smaller in transistors intended for high-power applications.
i have selected this paper as my semester project according to teacher we have to fully implement it. i need its full written matlab code simulink model and results. can you help m
Determine a normalized frequency at 820nm for a step index fibre having 25µm core radius. Given n 1 =1.48 and n 2 =1.46.Also calculate how several modes propagate within this fibre
(a) Consider the following transmission line with the reactance X1 placed across the input. It is being driven with a frequency ω such that the length of the line is λ/4. W
Q. If an antenna has an available noise power of 1.6 × 10 -15 W in a 1-MHz bandwidth, find the antenna temperature.
Q. How and why are the grounding and shielding used in electronic instruments? Sol. In electronic instruments grounding and Shielding techniques are available in order to a
Q. The twin-tee or notch network shown in Figure is often used to obtain band-reject characteristics. (a) Determine the transfer function V 2 /I 1 . (b) Find the angular freq
Enhancement type MOSFET In these types of devices operate by comprising a channel enhanced in the semiconductor material in which no channel was constructed, they are termed
Q. A 6.6-kV line feeds two loads connected in parallel. Load A draws 100 kW at 0.6 lagging power factor, and load B absorbs 100 kVA at 0.8 lagging power factor. (a) For the comb
Whose principle or law states that each point on a wave front may be considered a new wave source? Is it: w) Snell's Law x) Huygen's Principle y) Young's Law z)
I want project ideas.
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