Window Motor Doubles Voltage At The Power Supply [Overunity ?]

[DadHav]

thank you Gyula. Please take your time I'm so tied up with company that I won't have time myself for a while.
John

[jadaro2600]

Lumen. When you put it that way it does certainly sound to good to be true. Maybe I don't understand what you recommend. I can put a large cap on the output of the PS but once I add the diode it's likely the power supply wouldn't go up capacitor or not right? Maybe I don't picture what you say.
John

Perhaps you could do the same test with current as you do with voltage?

[Magluvin]

Hi all

Been thinking and Lumen is correct. The caps and diode will isolate the pulses from getting back to the PS. Then you measure the second cap with a meter.
Thing is, if the motor is putting out like it seems, depending on the second cap size, the motor may just spin to oblivion, due to the lack of PS limitations to incoming power. Have you tried a battery on the motor? That would solve a lot of questions here, maybe.

Very nice motor by the way

Magluvin

[DadHav]

Thank you Magluvin. The motor did turn out to be a little sweetheart. I have another about half the size also. I have a video of it at 20,000 rpm's but it can do more. I'm afraid of the magnets dislodging. Yes the battery would solve a lot of problems, but I haven't been able to get the same effect with a battery. That's why I keep mentioning impedance. This may not apply but something is going on with the supply circuit. I'll be home in a few days and I'll try some of the things you are suggesting here and we'll see what happens.
John

[Magluvin]

Hey Dadhave
Well being that you say it doesnt give you the effect with the battery, that got me thinking that the back emf pulses, probably not the consumption pulses, are causing the power supply to become inaccurate at regulating. One test you can try is to use one of those a/c outlet power meters on the input of the power supply to see if the PS consumption increases when the motor goes into overdrive when you hit the turbo switch. =] That would give a definite answer to what is going on. To go through that schematic to figure out PS operation wont be necessary.
Also, lets say you use Lumens cap diode setup on a battery, having the cap closest to the motor a large value, then run it, with the turbo switch Off (back charge switch, I like turbo switch for your situation) to get it running, then when you hit the switch, if the motor is back charging like it seems, the battery would not be a load on the back charge and the cap will accept the back charge easier and it should speed up, only if this is what is really happening.
Other than that, the PS is being fooled into stepping up the voltage due to the back charge pulses. Trying a large cap on the power input of the motor will lower the magnitude of the back pulses also, and the motor wont go into overdrive like you show, but maybe some, if the PS IS being fooled into putting out more than it should.
These tests should be easy and conclusive.

Magluvin