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

Vector quantity, how to solve vector quantity, with solutions and drawing

how to solve vector quantity, with solutions and drawing

Derive first law of thermodynamics, Derive First law of thermodynamics ...

Derive First law of thermodynamics When an amount of heat energy is supplied to the system, part of it enhances internal energy of the system and remaining is utilized by the s

Calculation of magnetization and magnetic flux density, A silicon material ...

A silicon material is subjected to a magnetic field of strength 1000A/m. If the magnetic susceptibility of silicon is -0.3x10-5, calculate its magnetization and magnetic flux densi

Universal gravitation, Object A attracts object B with a gravatational forc...

Object A attracts object B with a gravatational force of 10 newtons from a given distance. If the distance between the two objects is doubled, what is the changed force of attracti

Determine direction of wire''s motion and magnetic field, The greatest indu...

The greatest induced EMF will occur in a straight wire moving at constant speed through a uniform magnetic field when the angle between the direction of the wire's motion and the d

Evaluatre the magnitude of the gravitational force, A 2400-kg satellite is ...

A 2400-kg satellite is in a circular orbit around a planet. The satellite travels with a constant speed of 6.67x10 3 m/s. What is the acceleration of the satellite? Determine the m

Define wave, A wave is a disturbance which transmits power and momentum fro...

A wave is a disturbance which transmits power and momentum from one place to the other without the transport of matter.

Determine the heat energy added to the mixture, 1) Consider 2kg mixture of ...

1) Consider 2kg mixture of H 2 and N 2 ideal gases inside a closed piston-cylinder device at 150kPa and 100o C. This mixture has 0.4 mole fraction of H 2 . This mixture undergoes

Heavy water is often used as a moderator in thermal nuclear, 'Heavy water i...

'Heavy water is often used as a moderator in thermal nuclear reactors.' Give reason.

Electronics, tell the fixed transistor bias and describe the design

tell the fixed transistor bias and describe the design

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