Ch4-2 - 1 i u u = U m sin t u i Im Um Um Im = R U I= R U =...

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第第第 第第第第第第第第第第第 第第第第第第 第第第第第第 第第第第第第
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第第第第第第 u 1 第第第第第第第第 i t sin U m ω = u 第第第第第第第第第第第第第第第第第第第第第第第第第第第第第第第第第 u 、 i 第第第第第第
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R 0 I U I U = ° = o 0 U U = R U I = Im Um 第第第第第第第第第第第第第 第第第第 第第第第第第第第 R U I m m = o 0 I I =
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第第第第第第第第第第第 R I U = I U i u ui φ 第第 第第第
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第第 :P≥0 第第第第第第第第第第 2 第第第第第 第 第第第第 p = ui =U m I m sin 2 ωt =UI(1- cos2ωt) ( 2) 第第第第 = UI = I 2 R = U 2 /R = T pdt T P 0 1 i u ωt ui ωt p UI
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第 . 第第第第 u i 1 . 第第第第第第第 i =I m sinωt u = L di/dt = ωLI m cosωt =U m sin(ωt+90°) U m = ωLI m 第第 U=X L I X L = ωL
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第第第第第第 : L j X I U U = = o 90 I . . I
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Ch4-2 - 1 i u u = U m sin t u i Im Um Um Im = R U I= R U =...

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