Editing Network analysis (electrical circuits) (section)

====Separation of bias and signal analyses====
This technique is used where the operation of the circuit is to be essentially linear, but the devices used to implement it are non-linear. A transistor amplifier is an example of this kind of network. The essence of this technique is to separate the analysis into two parts.  Firstly, the dc [[Biasing (electronics)|biases]] are analysed using some non-linear method. This establishes the [[Biasing|quiescent]] operating point of the circuit. Secondly, the [[small signal]] characteristics of the circuit are analysed using linear network analysis. Examples of methods that can be used for both these stages are given below.