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. Why we Need biasing?
Need for biasing : Baising is necessary to establish the quiescent operating point so that the device operates with the linear region without exceeding the maximum power dissipation curve.
Operating point or quiescent point: It is fixed in the active region of the transistor characteristics within the maximum constraints it either shortens the life time of the device or destroys the device. The operating point is fixed for a particular value of base current IB , collector current IC and collector emitter voltage drop VCE. If any of these parameters change them, the quiescent point tends to change.
Factors affecting Q-point
· Change in ß
· Changes in temperature
Effect of change in temperature on VBE
VBE decreses by 2.5mV per degree C in temperature the base current IB is fixed bias .with the increase in temperature the base-emitter voltage VBE decreases which inturn increases the difference between VBE and collector biasing voltage VCC and therefore base current IB increases.even a small increase in IB increase collector current IC to a larger extent and VCC drops .Hence the Q-point fixed on these two parameters varies.
If a current is passed through a coil, it creates a flux within the coil. Any attempt to change this flux will create a back emf that acts to oppose the change. Consider again
Determine the value of capacitance to give resonance: A circuit shown in Figure having a resistance of 5 Ω, an inductance of 0.4 H and a variable capacitance in series is conn
Loudspeakers using single driver are unable to cover the entire frequency band from low frequency to high frequency. Sometimes multiband frequency is required for the bass enhancem
Q. Explain about Transistor Amplifiers? Amplifiers are circuits that produce an output signal which is larger than, but proportional to, an input signal. The input and output s
Question: a) Give the instruction cycle state diagram for a typical Von Neumann machine. b) Give two diagrams to differentiate between a Memory and CPU connections. c) Co
a) Include a Smoothing Capacitor to the Rectifier circuit and calculate the Output Voltage and Frequency b) Include a 47Ω Load Resistor and sketch the schematic diagram of the c
Q. In the circuit shown in Figure the switch opens at t = 0. Develop and execute a P Spice program to solve for v(t), and use PROBE to obtain a plot of v(t). Hint: Use the follo
Q. Let the solenoid carry an alternating current of 10 A (rms) at 60 Hz instead of the direct current. Find an expression for the instantaneous force.
Explain Thermosetting Plastic Materials. Thermosetting Plastic Materials: They undergo huge changes while subjected to high temperatures for rather sometimes. They are call
i) Calculate the eigenvalues of a 100 hp, 1150 rpm dc machine at rated flux with no extra load inertia. Use the "hot" value of the armature resistance. Calculate estimates of t
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