New comer needs any and all help

[jhsmith87]

Yea my neon on the collector was working. I had to take the neon of the base before it worked. I don't really have a decent platform yet but I'll see if I can post a video
I was thinking about hooking a jt to it

[jhsmith87]

OK here is my video.
http://static.photobucket.com/player.swf?file=http://vid1147.photobucket.com/albums/o547/jhsmith87/20121014_195546.mp4

[TinselKoala]

You got it! Ace! All right..... now you deserve to celebrate a little.

[jhsmith87]

I sure do.. I've been getting so irritated the past few weeks trying to make this.

[TinselKoala]

This motor is a bit mysterious to me. I mean.... .why does it work? Does it attract the rotor magnet, or repel it? Or Both? Or does it even work as a core effect motor like Orbo?

Here's why it's mysterious: It runs equally well in either direction, and.... the polarity of the drive coil doesn't seem to matter much.

That is: the rotor magnets are glued in place with one pole facing outward towards the coil. So the rotor magnets determine the "overall polarity" of the machine, since they cannot be changed easily once glued in place.
But the drive coil is getting strictly DC pulses, according to my oscilloscope. With the drive coil hooked up one way, he current is always in the same direction for the drive pulse and so the polarity of the electromagnet is always the same, just turning on and off, not alternating polarity like it would for an AC drive signal. Now reverse both the drive coil and the sense coil...... the motor still runs, even though the drive coil is now getting the _opposite polarity_ of current than before. So if it was attracting the rotor magnet the first way, the second way is repelling the rotor magnet. Yet the motor runs fine anyway.

The timing requirement is different for an attraction PM than for a repulsion PM. Call the closest approach of a magnet to the coil "Top Dead Center". Somehow, flipping both coils must also change the timing so that the pulses occur in the right place to drive the rotor by attraction: timed to fire just before "TDC" and shuts OFF as the magnet actually passes the coil,  OR by repulsion or core effect: timed to fire at or just after TDC, turning ON as the magnet passes the coil.

For me to determine the exact relationship of the drive pulse to the rotor magnet position, I need to be able to trigger my oscilloscope using some measure of the rotor position unrelated to the coil drive pulse, like an optical sensor separately powered. This will allow me to see whether the drive pulse always stays in the same place or advances or retards depending on  the sense coil polarity. Hmmmm.......

Thank you, jhsmith87, for showing me this interesting aspect of the Bedini system. I can see why many people have been fascinated by this thing over the years.