Notes

Wednesday, 20 February 2019

4:49 PM

Peak Value - Maximum value (in one magnitude)

Peak-to-Peak Value -

 

Average Value (DC Offset) - Average of all its instantaneous values over a full cycle.

 

To calculate the DC offset, take the integral of the waveform

 

 

 

• Root Mean Square (RMS) Value

Aka 'effective voltage'

Meant to help make the power produced from an AC and DC similar.

 

RMS Value is a measure of the heating effect of a sine wave.

Equivalent value of DC

 

RMS(VAC)=VDC

 

Average power -> integration of power

 

Then equate to RI^2

Then simplify to get I

 

 

 

 

FOR A SINUSOID ONLY

RMS = Peak div sqrt2

 

 

 

For a waveform consisting of a sum of sinusoids of different frequencies

The rms is equal to the suare root of the sum of squares of each RMS