DC CIRCUIT ANALYSIS

Figure 38 Assumed Direction of Current Flow

Electrical Science Volume 1 of 4
Page Navigation
119

Basic DC Theory DC CIRCUIT ANALYSIS DC CIRCUIT ANALYSIS All of the rules governing DC circuits that have been discussed so far can now be applied to analyze complex DC circuits. To apply these rules effectively, loop equations, node equations, and equivalent resistances must be used. EO 1.15 Given a simple DC circuit, DETERMINE the equivalent resistance of series and parallel combinations of elements. Loop Equations As we have already learned, Kirchhoff’s Laws provide a practical means to solve for unknowns in a circuit. Kirchhoff’s current law states that at any junction point in a circuit, the current arriving is equal to the current leaving. In a series circuit the current is the same at all points in that circuit. In parallel circuits, the total current is equal to the sum of the currents in each branch. Kirchhoff’s voltage law states that the sum of all potential differences in a closed loop equals zero. Using Kirchhoff’s laws, it is possible to take a circuit with two loops and several power sources (Figure 37) and determine loop equations, solve loop currents, and solve individual element currents. Figure 37 Example Circuit for Loop Equations Rev. 0 Page 49 ES-02

Privacy Statement
Press Release
Contact