Explain working of inverting amplifier, Electrical Engineering

Assignment Help:

Q. Explain working of Inverting Amplifier?

One common op-amp circuit is shown in Figure. For the case of finite voltage gain Ao of an op amp that is otherwise ideal, the output voltage becomes

527_Explain working of Inverting Amplifier1.png

150_Explain working of Inverting Amplifier.png


which is independent of the op amp's gain Ao. The sign inversion associated with Equation makes the amplifier "inverting." Generally if Ao is at least 200 times the magnitude of R2/R1, then the actual gain given by Equation will be within 1% of the ideal gain given by Equation. Assuming infinite gain of the op amp, it follows that

vd = v2 - v1 = 0 or v1 = v2

Since terminal 2 is at ground potential (zero) in Figure, terminal 1 is said to be a virtual ground.Notice that when R2 =R1, the inverting amplifier becomes a voltage follower with inverted sign and a gain magnitude of unity.


Related Discussions:- Explain working of inverting amplifier

What do you mean by digital building blocks, Q. What do you mean by Digital...

Q. What do you mean by Digital Building Blocks? Whereas a continuous change from one value to another is the essential characteristic of an analog signal and continuous-state (

Determine the time delay of the cable, Q. Determine the time delay of the c...

Q. Determine the time delay of the cable? An RG-213/U (radio guide 213/universal coaxial cable) is a small-sized, flexible, double-braided cable with silvered-copper conductors

Representation of the control system, Question: (a) The forward path t...

Question: (a) The forward path transfer function of a unity feedback control system is given by: (i) Draw the labelled block diagram representation of the control system.

Find imax and imin, Q. (a) In the circuit shown in Figure the zener diode (...

Q. (a) In the circuit shown in Figure the zener diode (with zero zener resistance) operates in its reverse breakdown region while the voltage across it is held constant at VZ and t

What are the signals involved in memory bank selection, What are the signal...

What are the signals involved in memory bank selection in 8086 microprocessor? The 8086 based system will have two sets of memory IC's. One set for even bank and another for od

Measures of regulator quality, Measures of regulator quality: The outp...

Measures of regulator quality: The output voltage can just be held roughly constant; the regulation is fixed by two measurements: 1. Load regulation is the alteration in ou

Circuit theory, contribution of circuit theory on the health and quality of...

contribution of circuit theory on the health and quality of life of the citizen

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