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

Schottky diode, what are the v-i characteristics of schottky diode?

what are the v-i characteristics of schottky diode?

Explain semi conductors, Semi conductors: Semi conductors are these sub...

Semi conductors: Semi conductors are these substances which lie among conductor and insulators. Semi conductor is those substances which hardly pass electric current by them

Internal combustion engine, Truck has a 100 kW engine power and 40 % effici...

Truck has a 100 kW engine power and 40 % efficiency . As oil burn in an hour if q = 4.4 to force multiplication 10 to 7 ?

State electric field lines in good metallic conductors, Electric field line...

Electric field lines In good metallic conductors: In good metallic conductors:  (i)   Static electric fields are not there (zero inside a conductor) (ii)  Charges reside

Cathode rays are made up of, Cathode rays are made up of: (1) Positivel...

Cathode rays are made up of: (1) Positively charged particles (2) Negatively charged particles (3) Neutral particles (4) None of these Ans: (2)Negatively charged pa

4, #question.5.

#question.5.

What is the charge on each one ball then, Q. Regard as two small metal...

Q. Regard as two small metal balls one having a charge of +1 micro-coulombs and the other having a charge of +3 micro-coulombs. The balls are get into momentary contact with e

What is pyrometer, A thermocouple is used to calculates very high (2000 0 C...

A thermocouple is used to calculates very high (2000 0 C) as well as very low (- 200 0 C) temperature in industries and laboratories. The thermocouple used to measure very high tem

Define speed, SPEED: The distance covered by a body in unit time is kno...

SPEED: The distance covered by a body in unit time is known as speed. It is represented by V.

Explain acceleration due to gravity, ACCELERATION DUE TO GRAVITY. In th...

ACCELERATION DUE TO GRAVITY. In the absence of air resistance, all objects in free fall near the surface of the earth move in the direction of the earth with a uniform accelera

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