Базовые элементы электрических цепей

6. We pass from loop currents to real ones, assuming that the real current of the branch is equal to the algebraic sum of the loop currents flowing along this branch.

Method of loop currents

1. Arbitrarily choose the directions of the currents of the branches

Method of loop currents

2. Arbitrarily choose the direction of the loop currents

III=J

?? II and IIII

Method of loop currents

We compose the equation for the first loop

Method of loop currents

We compose up an equation for the third loop

Method of loop currents

We have the following system of equations

Method of loop currents

Method of loop currents

Method of loop currents

Circuit calculation example

В цепи, изображённой на рисунке, рассчитать все токи методом контурных токов.

Параметры цепи: Е1 =24 В, Е2 =12 В, r1 = r2 = 4 Ом, r3 = 1 Ом, r4 = 3Ом.