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!
Q. Explain working of Bipolar junction transistors?
The family of bipolar junction transistors has two members: the npn BJT and the pnp BJT. Both types contain semiconductor junctions which operate with bipolar internal currents consisting of holes and electrons. These are illustrated in Figure along with their circuit symbols.
The emitter in the circuit symbol is identi?ed by the lead having the arrowhead. The arrow points in the direction of conventional emitter current ?ow when the base-emitter junction is forward biased. A transistor can operate in three modes: cutoff, saturation, and active. In the active mode, for an npn BJT, the base-emitter junction (BEJ) is forward-biased by a voltage vBE, while the collector-base junction (CBJ) is reverse-biased by a voltage vCB. Thus for an npn BJT, as shown in Figure (a), iB and iC are positive quantities such that iB + iC = iE. For a pnp BJT on the other hand, in the active region, the base-emitter and collector-base voltages are negative, and currents iB, iC, and iE are all negative quantities such that iE = iB + iC, that is to say, the bias voltages as well as current directions are reversed compared to those of an npn BJT.
Merits and demerits of? AC and DC onboard ship
ABCD propagation of an optical ray through a system can be described by a straightforward two by two matrix. In ray optics, the feature of a system is known by the correspondin
Q. The coil is placed so that its axis of revolution is perpendicular to a uniform field, as shown in Figure If the flux per pole is 0.02 Wb, and the coil, consisting of 2 turns, i
Q. Explain with the help of a block diagram the working of harmonic distortion analyzer. OR Write short note on Harmonic distortion analyzer. Sol. Several methods h
Q. A dc shunt machine has an armature winding resistance of 0.12 and a shunt-?eld winding resistance of 50 . The machine may be run on 250-V mains as either a generator or a mot
I''m trying to design ADC using MAX1198 and DAC using IDAC in Multisim 12 but none of them are working. I need some help in this regard
A wound-rotor induction machine, driven by a dc motor whose speed can be controlled, is operated as a frequency changer. The three-phase stator winding of the induction machine is
Q. Explain Continuous-data and discrete-data systems? A continuous-data system is one in which the signals at various parts of the systemare all functions of the continuous-tim
a. Determine the ratio of cross section of a circular waveguide to that of a rectangular one, if each is to have similar cut off wavelength for its dominant mode. b. Compare wav
For the network shown in Figure, find the current in each resistor by means of nodal analysis.
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