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Unformatted text preview: Maximum power transfer • Any power source can be modeled with complex Thevenin, • How much power delivered to a load? – Depends on RL, I – What is current? • Chose X L , R L to maximize power +V Th Z Th Z L ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 L Th L Th L Th L Th L L Th L Th L Th L Th L L Th L Th Th L Th Th L RMS L RMS Lavg L L L th th th Z Z R R R R R V R I X X X X R R R V I I R I X X j R R V Z Z V I R I Z I P jX R Z jX R Z * 2 2 2 2 2 2 2 2 2 if max is sfer power tran So if max is This if max is This * Re = = ⇒ + == + + + = ⋅ = + + + = + = = = + = + = “complex conjugate impedance matching”:...
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 Spring '05
 KELLEY/SEYLER
 Power, Cos, Maximum power theorem

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