Tuesday, 10 May 2011

Average Value & Root Mean Square

Average Value( mean value )

The mean or average value for a complete AC sine wave is zero because of the symmetrical shape of the sine wave.

Positive value = Negative value

Root Mean Square( rms )

The rms is the effective voltage that can generate the same amount of power as a direct current ( DC) that flows through the resistor.

Vrms = (1/2)X Vp
         = 0.707 X Vp

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