Two-Port Parameters and Transformations

https://www.electronics-lab.com/article/two-port-parameters-and-transformations/

Introduction A linear circuit is one whose output signal is linearly proportional to its input signal. As a simple case, it is possible to model the network at only two terminals as shown in Figure 1. Here, only V1 and I1 as the voltage and the current internal to the circuit, need to be described. […]