Calculate the feedback fraction, Physics

Assignment Help:

Q. The gain of an amplifier without feedback is 100 and the gain of an amplifier with feedback is 200. Calculate the feedback fraction.

Solution : Voltage gain after feedback,

Af = A / 1 - Aβ

200 = 100 / 1 - 100 β

2 = 1 / 1 - 100 β

2 - 200 β = 1                           (that is) 200 β = 1

β = 1 /200 = 0.005


Related Discussions:- Calculate the feedback fraction

Determine magnetic field among two poles of electric motor., (a) A 400mm le...

(a) A 400mm length of conductor carrying a current of 25A is situated at right-angles to a magnetic field among two poles of an electric motor. The poles have a circular cross

Illustrate thevenins theorem, Use Thévenin's theorem to find the current ?o...

Use Thévenin's theorem to find the current ?owing in the 14Ω resistor of the network shown in Figure. Find also the power dissipated in the 14Ω resistor.

Determine the axial force, Determine the axial force in the link AB of the ...

Determine the axial force in the link AB of the lifting tongs which cross without touching.  The weight of the crate is P44 kN and the width of the box is P45 mm   The axial for

Light, what is the speed of light

what is the speed of light

Magnitisam, what is magnitisam?how north pole and south pole takes part in ...

what is magnitisam?how north pole and south pole takes part in it?

Passing lane, Passing Lane A passing lane or overtaking lane is the lan...

Passing Lane A passing lane or overtaking lane is the lane on a multi-lane highway or motorway closest to the center of the road or the central reservation.

Define heat engine, Define Heat engine Heat engine is a device by which...

Define Heat engine Heat engine is a device by which a system is made to undergo a cyclic process that results in conversion of heat into work. It is explained as the ratio o

The nucleus of helium contains, The nucleus of helium contains : (1)Four...

The nucleus of helium contains : (1)Four protons (2)Four neutrons (3)Two neutrons and two protons (4)Four protons and two electrons Ans: (3)Two neutrons and two prot

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