Bjt amplifiers, Electrical Engineering

Assignment Help:

Explain the working of BJT Amplifiers?

The purpose of electronic amplifiers is essentially to increase the amplitude and power of a signal so that either useful work is done or information processing is realized. The output signal power being greater than the input signal power, the additional power is supplied by the bias supply.

Thus, the amplifier action is one of energy conversion in which the bias power is converted to signal power within the device. A single-stage amplifier is one in which there is only one amplifying element. By combining several single-stage amplifier circuits, a multistage amplifier is produced. Audio amplifiers are designed to amplify signals in the frequency range of 30 to 15,000 Hz perceptible to the human ear. A video amplifier is designed to amplify the signal frequencies needed for television imaging (see Chapter 15). An amplifier, in general, is then made up of a cascade of several stages. A stage usually consists of an elementary amplifier, which normally has only one transistor. The cascade is formed by making the output of the first stage as the input of the second stage, the output of the second stage as the input of the third stage, and so on. This section is devoted to the study of three basic forms of amplifier stages which use a BJT.


Related Discussions:- Bjt amplifiers

Show the storage layout of digital system, Q. Show the Storage Layout of di...

Q. Show the Storage Layout of digital system? The IEEE floating point numbers have three basic components: the sign, the exponent, and the mantissa. A mantissa is composed of t

Physics, find the resultant of two forces 20N and25N acting at an angle 60...

find the resultant of two forces 20N and25N acting at an angle 60 degree each other

Write the kvl equation for the circuit, Q. Consider a reverse-biased diode ...

Q. Consider a reverse-biased diode with a source voltage VB in series with a load resistance RL. Write the KVL equation for the circuit.

DC Generators, The armature of a 6 pole, 600 r.p.m. lap wound generator has...

The armature of a 6 pole, 600 r.p.m. lap wound generator has 90 slots. if each coil has 4 turns, how do you calculate the number of conductors to calculate the flux per pole to gen

Compute the primary current and the braking torque, A three-phase, wye-conn...

A three-phase, wye-connected, 400-V, four-pole, 60-Hz induction motor has primary leakage mpedance of 1 + j2  and secondary leakage mpedance referred to the primary at standstill

Describe the term pure hardware delay, Question: (a) Describe the term...

Question: (a) Describe the term "Pure Hardware Delay" in microcontroller design. (b) Name the three types of subroutines which are placed at the interrupt location in ROM a

Determine the voltage across each resistor, For the circuit of Fig: (i) ...

For the circuit of Fig: (i) using Kirchoff's Laws , find all the currents (ii)  determine the voltage across each resistor and check that all loops comply with KVL (iii

The value of resistance in the regulator circuit, A zener regulator consume...

A zener regulator consumes a zener diode with an internal zener resistance of 5 ohm and the value of resistance in the regulator circuit is 82 ohm. If the supply voltage alters by

Illustrate inductance with example, Q. Illustrate Inductance with example? ...

Q. Illustrate Inductance with example? An ideal inductor is also an energy-storage circuit element (with no loss associated with it) like a capacitor, but representing the magn

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