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

which is independent of the op amp's gain A_o. The sign inversion associated with Equation makes the amplifier "inverting." Generally if A_o 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

v_d = 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.

Posted Date: 6/21/2013 2:17:12 AM | Location : United States

Ask an Expert

Related Discussions:- Explain working of inverting amplifier, Assignment Help, Ask Question on Explain working of inverting amplifier, Get Answer, Expert's Help, Explain working of inverting amplifier Discussions

Write discussion on Explain working of inverting amplifier
Your posts are moderated

Write your message here..

Related Questions

Performance equations of three phase induction motor , Performance Equation... Performance Equations of Three Phase Induction Motor When balanced 3-? voltages are applied to the  stator  winding  a rotating magnetic field  of constant amplitude is produc

3 phase 4 wire meters, 3 Phase 4 Wire Meters 3-phase 4 wire meters (10... 3 Phase 4 Wire Meters 3-phase 4 wire meters (10/20, 20/50 A) are used for agricultural and industrial consumers. For loads up to 50 A, the meters are directly linked to the su

What are plastics, What are plastics? Plastics are materials (containi... What are plastics? Plastics are materials (containing carbon as common element) that have organic substances of high molecular weight and are able of being formed in required

Signal., explain about signal explain about signal

Show function of compensating plate in interferometer, Q. Show Function of ... Q. Show Function of Compensating Plate in interferometer? In absence of plate G2 the reflected ray passes the plate G1 twice, whereas the transmitted ray does not passes even o

Capacitive var, how over compensation by capacitive var rises voltage in a ... how over compensation by capacitive var rises voltage in a circuit?

Importance of transistor, Importance: The transistor is the main activ... Importance: The transistor is the main active component in practically all current electronics, and is considered through many to be one of the greatest inventions of the 20 t

Equivalent series impedance referred to the high-voltage, Q. A 25-kVA, 2300... Q. A 25-kVA, 2300:230-V, 60-Hz, single-phase transformer has the following parameters: resistance of high-voltage winding 1.5 , resistance of low-voltage winding 0.015 , leakage

Compute the starting torque with the starting compen sator, A three-phase, ... A three-phase, 2200-V, 60-Hz, delta-connected, squirrel-cage induction motor, when started at full rated voltage, takes a starting current of 693 A from the line and develops a sta

Use mesh analysis and nodal analysis to determine current, Q. Use (a) mesh ... Q. Use (a) mesh analysis and (b) nodal analysis to determine the current through the 4-resistor of the circuit of Figure.