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

Heart, how many pumps does the heart pumps

how many pumps does the heart pumps

Periodic and non periodic, how are digital signal are periodic and non peri...

how are digital signal are periodic and non periodic signal

Holes in semiconductors , (1) Holes works as virtual charge, although there...

(1) Holes works as virtual charge, although there is no charge on holes. (2) Effectual volume of hole is more than electron. (3) Mobility of hole is fewer than electron.

Explain limitations of dimensional analysis, (i)  The size examines cannot ...

(i)  The size examines cannot be operated to derive relations other than product of power functions, for example, s = ut + 1/2 at 2 or y = y 0 cosωt and so on, cannot be derived

About taking reading of screw gauge, how to take readings from screw gauge ...

how to take readings from screw gauge and zero error of it

Motion, How do objects move in one dimension?

How do objects move in one dimension?

Explain radioactivity and its problems and applications, Explain Radioactiv...

Explain Radioactivity and its Problems and Applications ? All radiation, electromagnetic as well as the kind from nuclear decay, takes its toll on living organisms. If the radiati

What is meant by the term modulation, What is meant by the term 'modulation...

What is meant by the term 'modulation'? Define with the help of a block diagram, how the process of modulation is carried out in radio broadcasts.

Farad, farad; F (after M. Faraday, 1791-1867) The derived SI unit of c...

farad; F (after M. Faraday, 1791-1867) The derived SI unit of capacitance, described as the capacitance into a capacitor that, if charged to 1 C, contain a potential differenc

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