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December 2nd, 2012, 01:35 AM   #1
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Average Power help

Show that:

P(ave.) = Im*Vm(cos?)/2

v=Vm*sin(?t+?) ==> sin(?tcos? + sin?*cos?t

hint: P = v*i (instantaneous power)

P(ave.) =1/T?0^T P.dt (integrated from 0 to T)

please help guys... thanks.
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December 3rd, 2012, 07:38 PM   #2
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Math Focus: Electrical Engineering Applications
Re: Average Power help

Can you take it from here? The second term should cancel when evaluated.
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