pulse motor Working video and info

[Nastrand2000]

Ren
Your microswitch can be replace with a transistor(see picture in reply #41). And you can use one of your secondary windings to as a trigger coil (pickup coil in picture), to trigger the transistor to pulse all four driving coils. The secondary coils on the rest of the coils can be uses as straight generator coil to recover extra voltage. If you follow the diagram I posted to capture back emf, you should be looking at about 200 to 300 volt spikes. Good luck.
Jason

[tropes]

Peter,
Looks good. I was wondering the what you guess the rpm is and what amount of current is it taking at 4.5 volt?
keep up the good work.
Jason

I have long since disassembled that motor but you can view the video and guess at the RPM. It was just a start and a good learning experience but very inefficient.
Peter

[Ren]

thanks Jase, that would be the next step for me I think. Looking at Rick F's bedini circuit I notice the secondary winding has a 1k variable resistor which I assume allows you to tune the device? I still need a little help with the electronics side of things. I will have an attempt at the transistor wiring soon. I also got some new equipment and gauges today, will hook them up and let you know the findings.

Thanks Peter, I will check out your page. And good luck with your surgery, keep your spirits high. My wife is a RN (10 years) who works in a chemotherapy ward, and is studying alot of information in regards to cancer and treatment, if you have any questions or concerns she would be  happy to share her wealth of knowledge. All the best.

s

[Nastrand2000]

Ren
The one thing that I have found, is that the slower you can run "motor" the more back emf you will capture. However, this comes at a price, because the motor will consume more current. You have to find the resonant frequency your motor is most efficient at. If you have questions about this, I'm more than happy to help you.  I live in Oregon, if you are anywhere close it is much easier in person. Good luck.
Jason

[Ren]

thanks jase, but im in Australia, it doesnt get too much further away than that! Thank for the offer though

To slow my motor down I have used the rotor to drive a small 12 volt hobby motor (read, very small). With four coils it still has enough torque to continue at a decent speed and depending on how I gear the hobby motor it will put out 0.5 -  9 volts. This could be combined with the voltage I am receiving through the secondary windings. I dont know how long this hobby motor will last though. Could possibly burn out.

I get more through my secondary windings the faster it goes however, so when the hobby motor slows down the rotor I lose a little bit of juice on that end.

Can anyone tell me part numbers for the hall sensor? And does the transistor need the 1k pot as seen here in pics http://rpmgt.org/SSG.html for dialing in?