Explain the virtual ground in an operational amplifier, Physics

Assignment Help:

Explain the significance of virtual ground in an operational amplifier?

Ans: Significance of Virtual Ground: Fig. (a) illustrates the circuit diagram of basic Inverting Amplifier. In this figure, the non-inverting terminal  is  grounded and input signal is applied to inverting terminal via resistor R1. However, difference input voltage is ideally zero: that is, voltage at the inverting terminal (v2) is approximately equal to that at non-inverting terminal (v1). Or we can say,  inverting  terminal  voltage  v2  is  approximately  at  ground  potential. Hence, inverting terminal is said to be at Virtual Ground. This notion is extremely useful in analysis of closed loop Op-amp circuits.

 

1235_Inverting Amplifier with Feedback.png


Related Discussions:- Explain the virtual ground in an operational amplifier

What is the dimentional formula of surface tension?, Surface tension is a ...

Surface tension is a contractive tendency of the surface of a liquid that permits it to resist an external force. It is revealed, for instance, in the floating of some objects on t

Huygens wave theory, Huygens wave theory: Huygen's wave theory is not c...

Huygens wave theory: Huygen's wave theory is not correct in all respects. 2. It assumes simply that light energy is propagated as a wave. 3. At the time of his proposition

What is hologram, What is hologram? Holography When an entity ...

What is hologram? Holography When an entity is photographed by a camera a two dimensional image of three dimensional objects is obtained. A three dimensional image of

Explain surface imperfection, Surface Imperfection: These are two dimensio...

Surface Imperfection: These are two dimensional and refer to a region of distortions that lies around a surface having a thickness of a some atomic diameters.

Explain the types of equilibrium, STABLE EQUILIBRIUM If object is in st...

STABLE EQUILIBRIUM If object is in stable equilibrium and if we displace object to a very little displacement dr then it will return back to starting position. UNSTABLE EQU

Network theorems, which theorem is better among all network theorems

which theorem is better among all network theorems

Peltier effect, Peltier effect (J.C.A. Peltier; 1834) The change in tem...

Peltier effect (J.C.A. Peltier; 1834) The change in temperature generated at a junction among two dissimilar metals or semiconductors while an electric current flow through the

How many ports does a fiber optics system have, How many ports does a fiber...

How many ports does a fiber optics system have? Depending upon the final use the main common parts to account for in a fundamental system are: bushing, end fittings and illumin

Determine the highest order spectrum, Determine the highest order spectrum ...

Determine the highest order spectrum which can be seen with monochromatic light of 589.3 nm wavelength by means of a diffraction grating having 15000 lines/inch.

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