Virtual Ground A virtual ground is a concept in analog circuits that allows us to assign a single reference potential to multiple nodes in the circuit, rega...
Virtual Ground
A virtual ground is a concept in analog circuits that allows us to assign a single reference potential to multiple nodes in the circuit, regardless of their actual physical ground connections. This allows us to analyze the behavior of the circuit in a simplified manner, without the complexities and limitations of physical ground connections.
Imagine a virtual ground as a reference point located at a fixed potential, regardless of the actual ground connections within the circuit. We can assign this virtual ground potential to any node in the circuit, effectively disconnecting it from any specific physical ground connection.
Using a virtual ground allows us to perform a variety of operations on the circuit, including analyzing open-loop gain, closed-loop gain, and frequency response. By manipulating the virtual ground potential, we can observe how the circuit's behavior changes, providing valuable insights into its performance