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Overunity Machines Forum



Shorting coil gives back more power

Started by romerouk, February 18, 2011, 09:51:45 PM

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Lakes

#80
February 24, 2011, 08:51:21 AM
You should be able to measure the pulse freq from the hall effect to get an idea of speed/run down times with/without load.

e2matrix

#81
February 24, 2011, 01:39:55 PM
Nice work Romerouk!  Looks like you could get a self runner there.  Considering the low power consumption on HD motors it seems doable.  Might need to try a smaller laptop HD like the 2.5" ones.  I see you went back to a reed switch on this one.  It appears to be lighting up some in the video.  Is that from sparking or getting hot?   I blew one out recently when I accidentally put a 12 volt nicad across it, lit up real nice for a couple seconds. 

romerouk

#82
February 24, 2011, 02:00:52 PM
Quote from: e2matrix on February 24, 2011, 01:39:55 PM
Nice work Romerouk!  Looks like you could get a self runner there.  Considering the low power consumption on HD motors it seems doable.  Might need to try a smaller laptop HD like the 2.5" ones.  I see you went back to a reed switch on this one.  It appears to be lighting up some in the video.  Is that from sparking or getting hot?   I blew one out recently when I accidentally put a 12 volt nicad across it, lit up real nice for a couple seconds.
I a not using the HDD motor to power the system, it is there just to have the disks with the magnets on it. I am powering the system with the small air core, hall sensor and a transistor.
I will post a diagram later.
Stefan suggested to use a 5w/240volts bulb but I don't have one yet.
The smallest bulb I have is a 15w/240volts and it does lit up but somwhere close to half brightness.

gyulasun

#83
February 24, 2011, 02:19:01 PM
Hi Romero,

Would you mind using a current meter at the input so that any effect of the load (LED, bulb etc) could be seen on it, how much the input current changes?  I understand and can hear from the sound of the RPM in your video that the load quasi does not affect the RPM but still it would be nice to see it too.  You could use a 1 or 10 Ohm series resistor and indicate the voltage drop across it with even a digital DC meter, the tendency of change could be seen, no need for true RMS value measurements now.

Thanks and keep up your excellent ideas.

Gyula

romerouk

#84
February 24, 2011, 04:21:22 PM
This is the circuit diagram used in my youtube video
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