Thane Heins Perepiteia.

[Heinstein]

Black & Decker
DR501  13mm
Type 2 120 Vac 50/60 Hz 6 A
0 - 750 RPM

"750rpm sounds like a fair bit of slip for an induction motor, but I doubt it's a DC motor."

You are right - it's a 120 V AC motor - definately NOT DC.

Thane

[aether22]

Very funny, should I  take that as a joke, or as 'I don't know'?
Do you believe the effect may work on other types of electric motors besides induction?

YES it does the hand drill rotates faster when magnetically coupled.
Thane

Ah, indeed it is a universal motor (the low speed reported is almost without doubt the tripple gear reduced speed, after all if the motor was truly turning at 750rpm with tripple gear reduction it would be only 4 revolutions a second at the drill bit!).
I know this because not only does putting an induction motor in a hand drill seem a bit off but on B&D's website it reports: Reversing brush system provides full power in forward and reverse.

Obviously that could only mean either a DC motor which allows AC input due to diode rectification or most probably a universal motor.

So the only question that remains is 'How different would have the video parts 1&2 looked if you had used the drill, would the change in speed have seemed as dramatic as with your induction motor?'

That your effect works on 2 totally different motor types (likely the key effect in many OU mot/gen setups over the years) is very very important!  But please do clarify is the result near as dramatic as we've all seen with the induction motor?


Adittion: 2 requests, one could you if not too much trouble release a quick version of video parts 1 & 2 but with your electric drill as the motor this time? 
Ok, now I've made the slightly unreasonible request hopefully it will make this next request seem all the more reasonible. Can you give plans for the coils (& cores) you used in your generator?

Thx

[EMdevices]

The speed did not stabilize - it was still increasing Ã,â€" I lowered the input voltage to keep it within safe limits.

What kind of safe limit? ( as it magnets flying off?)Ã,  Because the AC induction motor will not speed up beyond it's operating speed dictated by #of poles etc..

Perhaps a suggestion would be to design a wheel that can handle the full speed of the induction motor. Then see if it accelerates even more when loaded.  If that happens we know power flow occurs from the motor (now a generator) to the grid.  But perhaps the real quest should be to see if we can break into overunity, even below this top speed.

Black & Decker
DR501Ã,  13mm
Type 2 120 Vac 50/60 Hz 6 A
0 - 750 RPM

"750rpm sounds like a fair bit of slip for an induction motor, but I doubt it's a DC motor."

You are right - it's a 120 V AC motor - definately NOT DC.

Most drills have gear reduction so rpm specs say very little.Ã,  Also,Ã,  you can run a DC motor off of AC just fine.Ã,  In fact the powerfull drills are DC motors with brushes, but use AC, at least mine does.

EM

[aether22]

Most drills have gear reduction so rpm specs say very little.  Also,  you can run a DC motor off of AC just fine.  In fact the powerfull drills are DC motors with brushes, but use AC, at least mine does.

I found his specific drill and it uses gear reduction to reduce speed x3 so 750rpm is the gear reduced speed.
And obviously you do not mean to say that you can run a DC motor on AC, but you can run a universal motor off it (the only difference is it has electromagnetic stators) or run a DC motor off DC rectified from AC.

If you run a DC motor on AC it viabrates rather than turning.

[JustMe]

If you run a DC motor on AC it viabrates rather than turning.

Can I do this at home?