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

Write down the equation of electromagnetism, One of the Maxwell's e-m equat...

One of the Maxwell's e-m equations involves the curl of the electric field. Write down the equation and mention the law of electromagnetism which is shown by the equation.

Verify gauss theorem in electrostatics, Verify Gauss' theorem in electrosta...

Verify Gauss' theorem in electrostatics. Apply it to search the electric field strength at a point near a long straight conductor carrying electric charge.

Colours of white light travell , Why different colours of white light trave...

Why different colours of white light travell with different speed in a glass prism,while they travell with same speed in air? Ans)Since in diffeernt medium frequecy remains const

Analogue multimeter, Analogue multimeter: Even the most basic analogue ...

Analogue multimeter: Even the most basic analogue multimeter can prove to be invaluable when in the hands of an experienced user. Simple measurements of voltage, current and r

Electronics, a n-p-n transistor having a.c. current gain of 50 is to be use...

a n-p-n transistor having a.c. current gain of 50 is to be used to make an amplifier of power gain 300. what will be the voltage gain of amplifer

Thin film technologies in solar cells, THIN FILM TECHNOLOGIES The...

THIN FILM TECHNOLOGIES The various thin technologies currently being developed reduce the amount of light a bsorbing material required in creating a solar cell. This

Explain variable or non-uniform velocity, VARIABLE OR NON-UNIFORM VELOCITY:...

VARIABLE OR NON-UNIFORM VELOCITY: If a body covers unequal displacement in most equal intervals of time, though the smallest interval may be, then the velocity of the body is s

Circular motion, QUESTION 1 A car of mass 800 kg is pulling a trailer of m...

QUESTION 1 A car of mass 800 kg is pulling a trailer of mass 300 kg up the slope of angle ? to the horizontal where sine ? = 1/200. Resistance to motion (apart from gravity) is 1.

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