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

[gyulasun]

Hi John,

I have had a look at the PS schematics. It is a decent linear PS with pass transistors and control + reference circuits as such linear PSs have been designed for long, before the switched mode PS era. It has a separate board for the 3 digit digital panel meter and this senses the output voltage directly between the + and - ports, current is sensed by watching the voltage drop across a series shunt resistor.  This digital meter works like a DMM (digital multimeter) except it has a maximum input voltage range of 50-60V or so.
So this built in digital meter is able to measure the voltage level whatever is either set by the front panel control or as in your case the PS output + your motor combination makes the output voltage level increase up to 41-42V and the meter also shows that.

I do not recommend any tests which would connect series batteries onto the output of this PS, even if the PS were unplugged. This is true for any such PSs, damage can easily occur in the inside circuits, especially when an inductive load like your motor can 'bang' the output ports with inductive spikes due to the switching.

Would like to ask if your motor circuit is a normal H bridge made with MOSFET or bipolar transistor switches? and where the diode bridge is exactly connected, together with your feedback switch, if you happen to have a rough schematic drawing, it could be of further help.

rgds, Gyula

EDIT: Just read what Magluvin wrote and I fully agree with him.

[DadHav]

Gyula. I would like to thank you and everyone else who has commented on the video. I have had time to try some of the suggestions and have to agree that the power supply is causing the voltage increase due to the unusual characteristics of the motor and circuit. After installing capacitors and the diode the motor acted normal as everyone was expecting. I'm sorry for taking up so much of everyones time, but am happy to have met some helpful interested people here. I probably should get the video off of the Tube. Maybe I'll hang around a little bit to see what I might learn.
Oh sorry, You asked about the circuit. This is the typical Bedini Full Wave Sequential Bipolar Circuit that is published most everywhere.
DadHav/John H

[gyulasun]

Dear John,

thanks for reporting back.

Would you mind confirming whether the DC voltage across the second capacitor after the diode (lumen indicated it as an optional cap in his drawing) increases with your switch on?
This would make your test the most informative and complete.

Thanks, Gyula

[Magluvin]

hey Dadhav
Actually maybe keep the vid up and make a vid of the correction for others to learn from.  It would be interesting to see the measurement of the capacitor with the turbo switch on/off. The pulses that were getting back to the PS would show up in the cap.
What were the values of the caps you used?
Also, was the window motor a bifilar with the pickup coil? Still like that motor. =]
Mags

[Magluvin]

Also to show if there is a difference in current output from the PS with the switch on and off.

Mags