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 instrument is used to measure volume, What instrument is used to measu...

What instrument is used to measure volume? Liquid volume is calculated with beakers, measuring cups, spoons, graduated cylinders, and the like. For regular objects, solid volum

binding power of a hydrogen molecules, Binding energy of a system is descr...

Binding energy of a system is described as the energy released when its constituents are brought from infinity to form the system. It can also be explained as the energy required s

Tachyon paradox, The argument reveling that tachyons (must they exist, of c...

The argument reveling that tachyons (must they exist, of course) cannot carry an electric charge. For a (imaginary-massed) particle travelling quicker than c, the less energy the t

Necessity of a starter, Necessity Of A Starter For D.C Motors When moto...

Necessity Of A Starter For D.C Motors When motor is at rest, then N=0 and due to Eb  is directly proportional to N, so   At begin E b  =  zero Thus armature current at t

Evaluate intensity in youngs double slit experiment, In a young's double sl...

In a young's double slit experiment a point on the screen is similar distance from both the slits if any one of the slit is closed the intensity at P due to the other slit is 0.02

Measuring field strength of permanent magnets, I want to measure H, not B T...

I want to measure H, not B The magnets in question are permanent magnets (large Neo or SmCo magnets), not coils =====================....Steel ____........................____ |.

Force constants, what is the force constants of Gd2MoO6?

what is the force constants of Gd2MoO6?

Electromagnetic induction, The structure of a simple d.c. motor and explain...

The structure of a simple d.c. motor and explain briefly how it works

Assembling three charged particles, How much work has to be completed in as...

How much work has to be completed in assembling three charged particles q1= 2 micro coulomb, q2= 3 micro coulomb and q3= 4 micro coulomb at the vertices of a equilateral triangle o

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