Linear Circuit Analysis


Source Transformation

Source transformation is the process of simplifying a linear circuit, especially with mixed sources, by transforming independent voltage sources into independent current sources using Norton's theorem, and vice versa using Thévenin's theorem . The process is usually combined with series and parallel simplifications of resistor (or impedance in the case of AC circuits), current sources and voltage sources.

V R I R A B A B
Fig. 1. Example of a source transformation. Notice that resistance $R$ is the same in both configurations. In order for the two circuits to be equivalent the components need to satisfy $V=RI$.
Conversion from Norton to Thévenin equivalent circuit

When transforming a circuit from a Norton equivalent circuit to a Thévenin equivalent circuit the value of the resistance remains the same, while the voltage of the voltage source is $$\begin{equation}V=R I\end{equation}$$

Conversion from Thévenin to Norton equivalent circuit

When transforming a circuit from a Thévenin equivalent circuit to a Norton equivalent circuit the value of the resistance remains the same, while the current of the current source is $$\begin{equation}I=\frac{V}{R}\end{equation}$$

Sample Solved Problems
The examples below are randomly generated.
See also
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Source transformation