§ 9-1 Instantaneous power
i
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? N
P=vi--(passive sign convention)
RRiipR R /22 ?? ?????
dtL i d iipL L /???? ?
dtdCipC C /??? ????
The current response:
)c o s ()( ?? ?? tIti m
)2c o s (c o s ??? ??? tVIVI
)c o s (c o s ???? ??? ttIVip mm
tV ms ?? c o s?
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iR
L
tVItVIVI ????? 2s i ns i n2c o sc o sc o s ???
)2c o s (2c o s2 ??? ??? tIVIV mmmm
)t a n,( 1222 R L
LR
VI m
m
??
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???
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(R) (L or C)