1. ECE 201 Circuit Theory I1 Maximum Power Transfer Maximize the power delivered to a resistive load

2. ECE 201 Circuit Theory I2 Consider the General Case A resistive network contains independent and dependent sources. A load is connected to a pair of terminals labeled a – b. What value of load resistance permits maximum power delivery to the load?

3. ECE 201 Circuit Theory I3 General Case (continued)

4. ECE 201 Circuit Theory I4 Take the Thevenin equivalent of the circuit

5. ECE 201 Circuit Theory I5 Look at the power developed in the load

6. ECE 201 Circuit Theory I6 Find the value of R load that maximizes power

7. ECE 201 Circuit Theory I7 The maximum power delivered to the load

8. ECE 201 Circuit Theory I8 Example 4.12 a) Find the value of R L for maximum power transfer to R L.

9. ECE 201 Circuit Theory I9 Determine the Thevenin Equivalent

10. ECE 201 Circuit Theory I10

11. ECE 201 Circuit Theory I11 Example 4.12 continued b) Calculate the maximum power that can be delivered to R L.

12. ECE 201 Circuit Theory I12 Example 4.12 continued What percentage of the power delivered by the 360 V source reaches R L ? I source + V ab -

13. ECE 201 Circuit Theory I13 Example 4.12 continued Percentage of source power delivered to the load