Well seen. I did the same observation and did some measurements to figure out what actually happens.
Here is the explanation. It requires some understanding of electronics to understand.
- Mulitwave “fattens” the sine wave coming from the wall.
- Voltage out of Powerplant is same in RMS for Sine and Mulitwave.
- As Multiwave is “fatter” the peak voltage of multiwave will be lower.
- The peak is largely what drives components, and power supply caps use the peak for charging.
- So using multiwave will “starve” your equipment of peak voltage and lower the power they consume.
- Hence you see lower power output with multwave on than on sine wave.
I think this implementation is wrong and go against the idea of multiwave. A more correct way to do it would be to maintain peak when turning on multiwave. I could see people being nervous though wiht voltage RMS which is what is displayed going up. The workaround is to increase output voltage when using multiwave so that you get same peak as for sinewave. This should be around 7% for full multiwave.
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