# Methods of Analysis of AC Network

For networks with two or more sources that are not in series or parallel, the methods described in the last two chapters cannot be applied. Rather, methods such as mesh analysis or nodal analysis must be employed. Since these methods were discussed in detail for dc circuits in Chapter 7, this chapter will consider the variations required to apply these methods to ac circuits. Dependent sources will also be introduced for both mesh and nodal analysis. The branch-current method will not be discussed again because it falls within the framework of mesh analysis. In addition to the methods mentioned above, the bridge network and $\Delta-Y$, $Y-\Delta$ conversions will also be discussed for ac circuits. Before we examine these topics, however, we must consider the subject of independent and controlled sources.