The equivalent circuit of a generator and load is shown in the diagram to the right.

There are a number of very well known and often used equivalent circuits in linear network analysis.

Postulation of the first electronic equivalent circuit for the visual process.

Sometimes, a more complex model is required such as the equivalent circuit shown in figure 4.

The resulting equivalent circuit of a solar cell is shown on the left.

In its most common form, an equivalent circuit is made up of linear, passive elements.

Operation of a solar cell can be understood from the equivalent circuit at right.

The output signal is then related to this mechanical force as if it had passed through the equivalent circuit.

The equivalent circuit and the formula at right are valid for any type of antenna.

A thin post has an equivalent circuit of an inductor.