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

What is incorrect with this picture, What is incorrect with this picture? ...

What is incorrect with this picture? Answer: The Current is the flow rate of charge. When the charge obtains to the junction of three wires (including the wire the

Constant negative velocity, Constant Negative Velocity Observe in which...

Constant Negative Velocity Observe in which the object below moves along with a constant velocity within the negative direction. The dot diagram displays in which each consecut

Illustrate what is a positron, Illustrate what is a positron? Answer:-...

Illustrate what is a positron? Answer:- A positron is a positively charged electron and it's an anti-electron - antimatter! The positron has a charge of +1 just the opposi

What is the use of surface tension? , It is jut a field of physics which is...

It is jut a field of physics which is made to understand the concept of fluids better ,you may not seek the benefit right now ,but can know the concept,and the application of it in

If the resistance to earth of earth electrode is high?, Q. Action to be mad...

Q. Action to be made if the resistance to earth of earth electrode is high? Ans: Earth resistance lies upon soil conductivity. To reduce earth resistance dig around the earth

Laser, why we use he-ni laser light in michelson interferometer

why we use he-ni laser light in michelson interferometer

What are paramagnetic substances, a) Spin motion of electrons b) On the ...

a) Spin motion of electrons b) On the basis of spin and orbital motion of electrons c) These are feebly attracted in an external magnetic field i.e., have a tendency to go fr

Power ratings of dc circuit, Power ratings of DC Circuit: Electrical eq...

Power ratings of DC Circuit: Electrical equipment can only stand a certain amount of heat production without damage and the safe power which a piece of equipment can consume wi

Inertia with a spade, Inertia with a spade Scoop up a spadeful of dry e...

Inertia with a spade Scoop up a spadeful of dry earth. Now pitch the earth away from you. View that when the spade stops the earth flies on due to inertia.

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