Week Nine: AC Power Analysis

Important terms and formulas to remember:

Instantaneous Power 
p(t)

     -absorbed by an element is the product of the instantaneous voltage v(t) across the element and the instantaneous current i(t) through it. 

p(t) = v(t) i(t)
v(t) = Vm cos(ωt + θv)
i(t) = Im cos(ωt + θi)




Average Power 
         -is the average of the instantaneous power over one period. 




Maximum Average Power Transfer
          -is the maximum amount of power will be dissipated by a load resistance when that load resistance is equal to the Thevenin/Norton resistance of the network supplying the power. If the load resistance is lower or higher than the Thevenin/Norton resistance of the source network, its dissipated power will be less than maximum.


Watch this video for more information!


Reflection:
      I think we must develop a deeper understanding about the basic theories of AC power analysis. Also, we must be able to familiarize ourselves with the formulas. I have learned that power is a significant and common quantity when you are planning to work in a electric company.

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