Let me repeat- the video teaches us some history on how to run a motor more efficiently than regular engines can.
Motors, engines, whatever you want to call it

I will say it again like this, the video teaches us all to run an electrical motor for 85% cheaper.
Think of it like this, we know from the books 1hp=750watts and regular motor are only 80% efficient or they loose 20% of 750watts so a 1 hp electrical motor uses 600watts and looses 150watts.
The video teaches us that the same 1hp motor uses 600watts but does not waste but instead recover 85% of the 600watts which = 510watts returns. So a 1 hp motor only takes 90watts instead of 600watts.
That is a big deal.
Now to answer your question you may gain 10% by pulsing the DC but that flywheel should give you 200%
https://www.amazon.com/RioRand-7-80V...%2C156&sr=8-14
- Control power: 12V within 300W ; 24V within 400W ; 48V within 450W ; 72V within 500W
- Duty cycle adjustable range: about 1% -100%
- PWM frequency: 12KHZ
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