Hi...

I'm trying to determine effective power consumption by integration, over a complete cycle at 50Hz,

and not over 1 second (as it is in the majority, if not all, oscilloscopes) .

The video "How & Why to use Integration on an Oscilloscope" from Dave

was very elucidate but there is something I'm still missing.

**Scope screenshot is at:**

photobucket.com/gallery/user/miguelgpbs/media/bWVkaWFJZDoxMzAzNTk3NTQ=/?ref=

anyway, the image is also attached here...

I'm using a Rigol DS1054z

* Yellow (CH1) : Mains sine wave voltage, 230Vac rms 50Hz

* Cyan (CH2) : Current, measured through a 1 ohm series resistor.

* Purple : Voltage (Yellow CH1) times Current (Cyan CH2) math function to compute power

* Red vertical lines are the imposed area of measurement

As the current is an irregular waveform, consequently the power is also a irregular one.

To integrate this irregular power waveform over a complete cycle, I used the area measurement function of this oscilloscope,

confined between the red lines (this gives me immediately the final integrated value) .

The result value for the integration (area calculation) was 152mWs (green bordered at bottom right side).

**Question is:**

The 152mWs, as the unit of measurement itself states (mWs), is valid for a time of 1 second.

So, as long as I understood, this result is not the effective power for a 50Hz frequency.

Given this, how to calculate the effective power consumption, from the result 152mWs, for the

power waveform (Purple) over a complete 20ms cycle (50Hz) ?

Thanks in advance,

Miguel Garcia