If both clamps are placed directly next to each other, the result is an absolute overlap of the curves with 0 watt difference. Let’s start in the already mentioned measurement setup and positioning at the respective line ends with a measurement duration of 120 ms and first without capacitors. Here, too, the curves on the timeline lie (almost) perfectly on top of each other, only the deflection differs slightly. This is the result of conduction loss due to the ohmic resistance of the cable. On average, I measure a little more than 1.5 watts as the average value for the difference (red curve). However, the excursions of up to 10 watts also include the residual ripple of the power supply, which can be easily neglected. The load peaks here range from 247 to just under 250 watts with an average of about 152 watts at the socket.
If you zoom into the middle area, the image remains almost the same. Less than 2 watts of losses are also here and the load peaks coincide at both measuring positions.
If I resolve this even further, nothing changes again, which is actually only logical.
Not even halving the time brings further insight, because it is what it is. Everything lies neatly on top of each other.
Now let’s move on to the maximum resolution. We see a good overlap of the curves and the same losses. So without capacitors we have a curve without phase shift and change. Only the power losses have to be included.
But what happens if you now put a capacitor adapter in between? A lot, as we’re about to see!
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