Kapanadze Cousin - DALLY FREE ENERGY

[SolarLab]

No need to crash to perform fundamental experiments.

Exp #1: Just take a bowl of water and set it on the front seat beside you; then drive around for a while!

Exp #2: Slip the clutch a bit - when you achieve resonance - stop slipping the clutch - the bowl will continue
to empty itself. Then, look in rear view mirror and say - boy was that a stupid thing to do! 
    Kids loved it - wife, not so much!   

Or Not?      Sometimes you can "rock [resonate]" your way out of the mud or snow or sand (not so much)!

Scores of examples: {fast dv/dt} driving a nail, bullet, {not so fast dv/dt} anti-lock brakes, putting your cup down....

[Jeg]

Void or anyone else some help please.
Yellow waveform is an output of a circuit i am playing with. It is across a 2,375 Ohm wattage resistance. I'd like to calculate the wattade across the load.  I see a  VrmsP of 9.13V but i don't know what "P" at the end stands for. 9.13/2.375= 3.84A X 9.13V = 35 Watt?

Thanks in advance

[itsu]

Hi Jeg,

i am sure your Rigol manual will describe VrmsP somewhere.

But a quick google search shows something like this:
"The rms value of the phase voltage"

https://books.google.nl/books?id=4jZ7DwAAQBAJ&pg=SA4-PA21&lpg=SA4-PA21&dq=Vrms+VrmsP&source=bl&ots=-gnBfsGb_P&sig=F8VUNoeLJ3nsLNgxo43XWLPEBEI&hl=nl&sa=X&ved=2ahUKEwjU1IrW9NnfAhUQaVAKHfFWB7sQ6AEwAHoECAUQAQ#v=onepage&q=Vrms%20VrmsP&f=false

Has to do with harmonics etc. it seems.

Anyway, why not use Vrms (which i think is hidden underneat the 15Khz square wave signal symbol top right corner)
which seems to me to be 9.05V.

Then the power across the load (really 2.375 Ohm??) would be P=U²/R = 9.05²/2.375 = 34.48W.

Itsu

[Jeg]

Thanks a lot Itsu. I should read Rigol's manual.

[Void]

Hi Jeg, Not sure about the rmsP, but in general if you have an assymetrical waveform the RMS value
indicated on a scope can potentially be very misleading, especially if the current is rectified and only conducting
during part of that voltage waveform. The scope RMS voltage reading in such a case would not be
accurate, for example. Use the RMS reading from a scope with much caution. The RMS reading from a scope
on very symmetrical sinewaves should normally be more accurate, but even then you have to be careful depending
on the actual circuit setup.