Maximum%20Power%20Transfer

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Maximum Power Transfer

• Maximize the power delivered to a resistive load

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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?

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General Case (continued)
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Take the Thevenin equivalent of the circuit
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Look at the power developed in the load
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Find the value of Rload that maximizes power
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The maximum power delivered to the load
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Example 4.12

• a) Find the value of RL for maximum power
  transfer to RL.

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Determine the Thevenin Equivalent
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(No Transcript)
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Example 4.12 continued

• b) Calculate the maximum power that can be
  delivered to RL.

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Example 4.12 continued

• What percentage of the power delivered by the 360
  V source reaches RL?

Vab -
Isource
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Example 4.12 continued

• Percentage of source power delivered to the load