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

Explain current and voltage relationship for two resistors, The current/vol...

The current/voltage relationship for two resistors A and B is as shown in Figure. Verify the value of the resistance of every resistor.

Measurement, How do we measure the height of a house

How do we measure the height of a house

Relative density, The weighted rod floats with 6 cm of its length under wat...

The weighted rod floats with 6 cm of its length under water [density 1000 kg/m3]. What length is under the surface when the rod floats in brine [density 1200 kg/m3].

State joules law of heating, Q State Joule's law of heating? The heat p...

Q State Joule's law of heating? The heat produced in a conductor is (i) Unswervingly proportional to the square of the current for a given R (ii) Unswervingly proportiona

.inkjet printer, tell me in detail about inkjet printer???

tell me in detail about inkjet printer???

Magnetic effect, Determne the magnetic field due to a finit sraight wire of...

Determne the magnetic field due to a finit sraight wire of length 2l, carrying a steady current i. The point of interest P is l distance away from the middle point of wire O. So

What is radioactivity, What is radioactivity? Radioactivity: The proc...

What is radioactivity? Radioactivity: The process of spontaneous disintegration of the nuclei of heavy elements with the emission of certain radiations is known as natural ra

Uniformly charged rod, a) Three charges, every equal to 1 micro coulomb, ar...

a) Three charges, every equal to 1 micro coulomb, are placed at the three corners of a square of side 1 m. Find the electric field at the fourth corner. b) Determine the electri

Define electric circuits, Define Electric Circuits So far we have only ...

Define Electric Circuits So far we have only looked at electric charges sitting still and static discharges (like a shock or lightning). When we count on the charges moving thr

Find the magnitude and direction of the force, Two straight, parallel, curr...

Two straight, parallel, current carrying conductors are kept at a distance from each other, in air. The direction of present in both the conductors is the same. Find the magnitude

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