Explain the virtual ground concept.

Question

Accepted Answer

The virtual ground concept is a technique used in electronics to create a reference point at a voltage level that is virtually equal to ground.

The virtual ground concept is commonly used in operational amplifier circuits.
It is achieved by using negative feedback to maintain the voltage at a specific node close to ground potential.
This technique allows for easier analysis and design of circuits.
For example, in an inverting amplifier circuit, the virtual ground is created at the inverting input terminal of the operational amplifier.
The virtual ground concept is based on the principle that the input impedance of an operational amplifier is very high, causing almost no current to flow into the input terminals.

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