Active two-pole method (generator)

This method is used when it is necessary to calculate the parameters of one branch in a complex scheme. The method is based on the active two-terminal theorem: “Any active two-terminal network can be replaced by an equivalent two-terminal network with parameters Еэкв and Рэкв or Jэвв and Geqв, the mode of the circuit will not change.”

Algorithm:
Open the branch in which you want to define parameters.
Determine the voltage at the open terminals of the branch, i.e. with idle mode Eekv = Uxx favorite method.
Replace active bipolar, i.e. the circuit without the branch under study is passive (exclude all power sources, leaving their internal resistances, not forgetting that the ideal EMF has Rvn = 0, and that of the ideal current source Rvn = ∞). Determine the equivalent resistance of the resulting circuit RACK.
Find the current in the branch by the formula I = Eeqv ((R + Rekv) for the passive branch and I = E ± Eeqv / (R + Reqv) for the active branch