EES512_L10_W2011_PracticalSources_MaxPowerTransfer_commented

EES512_L10_W2011_PracticalSources_MaxPowerTransfer_commented...

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Unformatted text preview: EES 512 :: Electric Circuits Winter 2011 Lecture 10 :: Practical Sources & Maximum Power Transfer Sections: 111/121/131/141 Instructor: Dr. Matthew Kyan Outline previously: – Linearity – Superposition – Thevenin equivalent circuit ● This week: – Thevenin (in practice) – Practical Sources – Maximum power transfer Thevenin (in practice) ● Can treat an unknown circuit as a black-box , then use Thevenin's theorem to form a model: Ideal vs Practical Sources ● Ideal Sources: Ideal vs Practical Sources [2] Ideal vs Practical Sources [3] Determining source characteristics open-circuit condition short-circuit condition ● In general, we need 2 conditions to find the source characteristics (Vs, Rs) or (Is, Rp) V I Example 1 ● A battery has a short-circuit current of 20A and an open-circuit voltage of 12V. If the battery is connected to an electric bulb of resistance 2 Ω, calculate the power dissipated by the bulb Example 2 ● A practical voltage source delivers 0.1 A to a load consisting of three resistors , A practical voltage source delivers 0....
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This note was uploaded on 09/24/2011 for the course EES 512 taught by Professor Karim during the Winter '11 term at Ryerson.

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EES512_L10_W2011_PracticalSources_MaxPowerTransfer_commented...

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