1. ECE 201 Circuit Theory I1 Superposition Principle of “Superposition” –When a linear circuit is excited by more than one independent source of energy, the total response is the sum of the responses to each source acting individually. To find the response due to each independent source –suppress voltage sources by replacing them with short circuits (V=0). –suppress current sources by replacing them with open circuits (I=0).

2. ECE 201 Circuit Theory I2 Example, page 130 of the text Find the branch currents in the circuit shown. i1i1 i2i2 i3i3 i4i4

3. ECE 201 Circuit Theory I3 Find the response to the voltage source i1’i1’ i2’i2’ i3’i3’ i4’i4’ v1v1

4. ECE 201 Circuit Theory I4 Find the response to the current source i1”i1” i2”i2” i3”i3” i4”i4” v3v3 v4v4

5. ECE 201 Circuit Theory I5 Find the branch currents by adding the results due to each source i1i1 i2i2 i3i3 i4i4