Author Topic: The Ossie motor (Read 332322 times)

Jimboot · « **Reply #570 on:** July 10, 2010, 04:21:06 AM »

Ill do the other measurements tonight. The reason I hve the coils stacked is the motor runs more efficiently when I have them there

I have no idea why. the negative on the meter I think means I have something wired backwards on the gen coil bridge/cap. I'll work it out tonight.

Im searching for a resource that tells me what the pinouts are on the hdd coil but have yet to find anything. So if anyone can point me at something that explains the hdd coil config it would be greatly appreciated. There are 4 pins and I am using 2.

The ampmeter is showing input current. the 6.3 is the SLA battery. I have only hand wound the bifilar coils. They are in series with the normal machine wound ones. Cant remember the cap value or schottkys but Ill have a look tonight & measure coil resistances and do a schematic.

gyulasun · « **Reply #571 on:** July 10, 2010, 05:33:25 PM »

Thanks for the infos. Hopefully the negative on the meter can be 'fixed' with replacing its endings and the polarity from the bridge correctly corresponds to the capacitor polarity.

The pinouts on the hdd coil: If I see it correctly in IMG_9512.jpg you have 9 or 10 coils, right? (Normally such motors were designed as 3 phase motors, 3 coils for each phase, then it had 9 coils but with 10 coils it had 2 phases I think.)
Try to do the followings: speed up the rotor and measure the generated AC voltages with your two channel scope across both pin pairs at the same time, no bridge or load connected to any output.
You say there are 4 pins (you used 2 pins), if you measure across the two pins you already used with one of the scope channels and you measure across the other sofar unused 2 pins with your scopes other channel and compare the amplitudes. You can see any phase difference between them too. Here I assume you already know there is DC continuity between the other 2 pins too. I assume the coils are in seriesly connected between the two pins you have used and surely the rest coils are also in series between the other two pins. With an Ohm meter this could be explored if all the coil endings are accessable somehow.
If you find the generated voltage amplitudes are about equal between the two pin pairs then you may wish to connect the voltage source in series (mind the phases) and then the summed output should go to the diode bridge AC input. Probably you will find the drag on rotor RPM will double when you load the output, unfortunately.

Jimboot · « **Reply #572 on:** July 11, 2010, 04:12:07 AM »

Quote from: gyulasun on July 10, 2010, 05:33:25 PM

Thanks for the infos. Hopefully the negative on the meter can be 'fixed' with replacing its endings and the polarity from the bridge correctly corresponds to the capacitor polarity.

The pinouts on the hdd coil: If I see it correctly in IMG_9512.jpg you have 9 or 10 coils, right? (Normally such motors were designed as 3 phase motors, 3 coils for each phase, then it had 9 coils but with 10 coils it had 2 phases I think.)
Try to do the followings: speed up the rotor and measure the generated AC voltages with your two channel scope across both pin pairs at the same time, no bridge or load connected to any output.
You say there are 4 pins (you used 2 pins), if you measure across the two pins you already used with one of the scope channels and you measure across the other sofar unused 2 pins with your scopes other channel and compare the amplitudes. You can see any phase difference between them too. Here I assume you already know there is DC continuity between the other 2 pins too. I assume the coils are in seriesly connected between the two pins you have used and surely the rest coils are also in series between the other two pins. With an Ohm meter this could be explored if all the coil endings are accessable somehow.
If you find the generated voltage amplitudes are about equal between the two pin pairs then you may wish to connect the voltage source in series (mind the phases) and then the summed output should go to the diode bridge AC input. Probably you will find the drag on rotor RPM will double when you load the output, unfortunately.

Xlnt! Thanks Gyula ! The motor does slow slightly when lighting a bulb or charging a cap but there is no discernible change in current draw from the motors battery. That's the main thing that has me curious.

Jimboot · « **Reply #573 on:** July 11, 2010, 09:59:31 AM »

Thanks Gyula.
Here is the scope shot. The 1st trace represents what I was measuring in the last vid.

gyulasun · « **Reply #574 on:** July 11, 2010, 11:50:19 AM »

So the green trace is from one output pin pair, loaded by the diode bridge + capacitor and some load?

And the yellow trace is the unloaded output voltage from the second output pin pair of your hdd coil set, right?

Jimboot · « **Reply #575 on:** July 11, 2010, 12:13:30 PM »

Quote from: gyulasun on July 11, 2010, 11:50:19 AM

So the green trace is from one output pin pair, loaded by the diode bridge + capacitor and some load?

And the yellow trace is the unloaded output voltage from the second output pin pair of your hdd coil set, right?

Both are unloaded. Pins 1 & 4 make up the green trace & 2 & 3 are the yellow trace. I just hit the auto button to configure the scope.

gyulasun · « **Reply #576 on:** July 11, 2010, 12:23:03 PM »

Then all you can do is to connect them in series to get their summed result, the two output amplitudes are different unfortunately. You surely cannot access the individual coil ends in the 9 or 10 core segments to check if they are surely grouped in series and brought out as a result of pin 1-4 and pin 2-3?

You can test this with DC Ohmmeter too?

synchro1 · « **Reply #577 on:** July 19, 2010, 05:59:21 AM »

Someone might be interested in looking at my Ossie dipole. Normaly opened and normaly closed reverse polarity switchs wired in series positioned at either side of a spinning dipole, with one diode between the coil and positive pole of the primary battery. You can read more about this Ossie type dipole Reed Switch circuit idea over on the "Single magnet Bedini" thread at Energetic Forum.

Jimboot · « **Reply #578 on:** November 23, 2010, 01:27:23 AM »

Just resurrected the ossie circuit coupled with a Rodin coil. Pretty happy with the results. http://www.youtube.com/watch?v=ibxIEFSpUDU 3mw 1600RPM

FatChance!!! · « **Reply #579 on:** November 23, 2010, 09:22:38 AM »

Quote from: Jimboot on November 23, 2010, 01:27:23 AM

Just resurrected the ossie circuit coupled with a Rodin coil. Pretty happy with the results. http://www.youtube.com/watch?v=ibxIEFSpUDU 3mw 1600RPM

Your videos does not show 1600RPM, its more like 160 RPM.
Just look at the wobbling shaft rod.
If it really was 1600 RPM then the wobbling would not be visible.

Jimboot · « **Reply #580 on:** November 23, 2010, 08:56:50 PM »

Quote from: FatChance!!! on November 23, 2010, 09:22:38 AM

Your videos does not show 1600RPM, its more like 160 RPM.
Just look at the wobbling shaft rod.
If it really was 1600 RPM then the wobbling would not be visible.

Yes there is a wobble but the frame rate of the iPhone makes it look very different. I show you on the vid the rpms. If you don't believe me I couldn't give a toss.

Jimboot · « **Reply #581 on:** November 26, 2010, 11:45:16 PM »

Had the osier motor up 9000rpm. I don't think the reeds will switch much faster. The Rodin coil is amazing. To use so little copper and achieve such high speeds compared to what I had been doing.

Low-Q · « **Reply #582 on:** December 01, 2010, 03:22:30 PM »

Quote from: Jimboot on July 11, 2010, 09:59:31 AM

Thanks Gyula.
Here is the scope shot. The 1st trace represents what I was measuring in the last vid.

Looks like you have about 90 degrees phase shift between green and yellow measurements. Is this due to some filter function/delay somewhere in the circuit?

Vidar

Jimboot · « **Reply #583 on:** December 01, 2010, 09:02:20 PM »

@low-q that was just me using a hdd coil as a pick up. It is purely what is coming off the coil.

Magluvin · « **Reply #584 on:** December 03, 2010, 03:30:48 AM »

JIMMY! Last I seen of you I believe you were saying the motor was causing headaches. What made you swing to the new Christmas coil? =]

Mags

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