Inspired by #keysightlabs and #danielbogdanoff, latest YouTube video, where he uses a super nice #keysightoscilloscope to demonstrate reactive (negative) power, I decided to make my own setup and replicate his experiment.

I don’t have an advanced scope as the one he used, but I can create a voltage vs current phase difference by changing the frequency of a signal I pass through an RC circuit.

Measuring the current with a differential probe, lets me multiply current and voltage and display a power curve on the oscilloscope (sorry for the weird colors, my camera messed up).

As you can see, with a phase difference between voltage and current, I get negative power: the top curve begins to move below zero. At 90 degrees difference, the power would average zero which is why inductors and capacitors never really heat up (besides the resistive loss ofc) 🙂

#electronics #signalsaturday #siglent #micsig #engineer #electronicsengineering #testandmeasurement #hamr #hamradio