Efficiency of Maximum Power Transfer

The Maximum Power Transfer Theorem ensures efficient power transfer and minimize wastage when applied correctly. It is useful in scenarios where maximizing power usage and minimizing waste is essential, such as audio amplifiers.

Efficiency Calculation

[Tex]η_{max} = \frac{P_{L,max}}{P_{s}} [/Tex]

where,

  • PL,max: Maximum amount of power transferred to load
  • Ps: Power generated by the source

PL,max = [Tex]\frac{V_{th}^2}{4R_{th}} [/Tex]

Calculating Ps

[Tex]P_{s} = I^2R_{th}+I^2R_{L} [/Tex]

According to the condition of maximum power transfer: RL = Rs = Rth

[Tex]P_{s} = 2I^2R_{th} [/Tex]

And we know [Tex]I= \frac{V_{th}}{R_{s}+R_{L}} = \frac{V_{th}}{2R_{th}} [/Tex]

[Tex]P_{s} = 2*(\frac{V_{th}}{2R_{th}})^2R_{th} [/Tex]

[Tex]P_{s} = (\frac{V_{th}^2}{2R_{th}}) [/Tex]

Hence efficiency will be:

[Tex]η_{max} = \frac{(\frac{V_{th}^2}{4R_{th}})}{(\frac{V_{th}^2}{2R_{th}})} [/Tex]

[Tex]η_{max}= \frac{1}{2} = 50% [/Tex]

Therefore, the efficiency of Maximum Power Transfer theorem is 50%


Maximum Power Transfer Theorem

In this article, we will study about Maximum Power Transfer Theorem. The Maximum Power is transferred in the circuit when the load impedance is matched with the source impedance. This theorem helps in increasing the efficiency and performance of the circuit. It is very helpful in circuit design. In this article, we will learn more about Maximum Power Transfer Theorem, We will see the Maximum Power Transfer Formula, Maximum Power Transfer Theorem Proof, Efficiency of Maximum Power Transfer and at last we Will go through Some Examples.

Table of Content

  • What is the Maximum Power Transfer Theorem?
  • Maximum Power Transfer Theorem Proof
  • Efficiency of Maximum Power Transfer
  • Maximum Power Transfer Theorem for AC Circuits
  • How to Solve Network using Maximum Power Transfer Theorem?
  • Solved Example on Maximum Power Transfer Theorem
  • Advantages and Disadvantages of Maximum Power Transfer Theorem
  • Applications of Maximum Power Transfer Theorem


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Applications of Maximum Power Transfer Theorem

Electronic Devices: To ensure that our phone or laptop uses less energy and make the battery last longer, the inside circuitry of these devices are set up in such a way to match the power source.Solar Panels: Solar panels are­ designed to capture sunlight and conve­rt it into usable electricity. To optimize­ their performance, it is important to e­nsure that the panels are­ properly connected to a batte­ry or electrical system to match the source and load impedances. This ensures maximum efficie­ncy and output of electricity from the solar pane­ls.Sound Systems: The spe­akers in your home stere­o system are responsible­ for producing sound. To ensure the be­st possible sound quality, it’s important to connect the spe­akers in a way that matches the se­ttings of the amplifier.Radio and TV Antennas: To rece­ive a stronger and cleare­r signal on your radio or TV, it’s important to align the antenna with the transmitte­r’s settings. This ensures that the­ radio or TV signals travel effective­ly through the antennas.Wireless Devices: Wi-Fi Remote controls utilize radio signals, for communication. By configuring them to align their signals, the strength and reliability of the connection can be enhanced....

Conclusion

In the above article, we gave seen that Maximum Power Transfer Theorem maximizes the power transfer at Thevenin’s resistance of the circuit. It is applicable to both AC and DC circuits and the derivation is explained above. It finds its application in various fields like electronic devices, solar panels, wireless devices and many more....

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