![]() ![]() ![]() When maximum power is delivered to RLD, the efficiency is a mere 50%. Calculate the maximum power transfer to the load if RLD=RTH Determine the power dissipated by RLD for load resistances of 2 and 6. Any power delivered by the source that does not get to the load is lost to the Thévenin resistance.Įxample Problem 1 Find the Thévenin equivalent circuit to the left of terminals a-b. The total power delivered by a supply such as ETh is absorbed by both the Thévenin equivalent resistance and the load resistance.BE CAREFUL!!! Note that this is not true if RLD RTh.But since the total resistance is increasing, the total current is dropping, and a point is reached where the total power dissipated by the entire circuit starts dropping. Maximum power transfer theoremĪs RLD increases, a higher percentage of the total power is dissipated in the load resistor. Therefore, the efficiency under the condition of maximum power transfer is: Efficiency Output / Input × 100. When RLD = RTh, the source and load are said to be matched. Consider the total power delivered from source equation (equation 2), in which the power is dissipated in the equivalent Thevenin’s resistance R TH by the voltage source V TH. Maximum power is transferred to the load when the load resistance equals the Thévenin resistance as seen from the load (RLD = RTh). How might we determine RLD such that PLD is maximized? Maximizing PLD Communicationsequipment Ourquestionis: Ifyouhave a system, what load shouldyouconnecttothesystem in orderthatthe load receivesthemaximumpowerthatthesystem can deliver?.MAX POWER TRANSFER In someapplications, thepurpose of a circuitistoprovidemaximumpowerto a load. ![]() Apply the Maximum Power Transfer theorem to solve appropriate problems.Analyze complex series-parallel circuits using thevenin’s theorem.Lesson 13: Maximum Power Transfer Theorem ![]()
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