Circuit setups for pulse motors

[casman1969]

@Ren  Thanks

Got in this morning and found that after 14 hrs my voltage is now at 12.62 V.  7/100ths of a volt drop is not too bad but I remember reading on the Bedini site that it is common to see these fluctuations during the P.M. hours. So I'll let it run and wind my second pickup coil.
I am open for suggestions on my trigger coils and adjusting the pulse width down as much as possible. I know the Hall's will give me that control but my gut says the trigger coil is the way to go.

[Nastrand2000]

Welcome to the group of builders casman. Any input is helpful in our quest to understand the electrodynamics of our setups. Reading from different motors as well as circuit setups will help us focus on our final goal.
Jason

[Ren]

have you tried putting variable resistors on the trigger coils? I just put a small 12 v bulb on my trigger winding inline with a variable resistor and my amp draw dropped by more than half. Its funny I thought... because you light up this little bulb and you think that it would take more amps, but it actually drops. Speed is almost the same too. And the variable resistor allows me to adjust the speed (and the intensity of the light too.)

You probably have already done all of this and found the optimum resistance for your trigger winding, Id love to see some schematics and/or pics.

By the way, are you collecting bemf back into another charge battery using bedini circuit? Or does this setup just run off the one battery? What are the specs of the battery?

[Thaelin]

I really have to chime in here and tell my short tale of horror.   

   I built a 4" rotor with 1/2 X 1 cylynder neos  grade 35. The lost magnet is somewhere downd inside the wall. I had to do a hasty fix for the hole it left. Motor was about 3 feet from the wall when it let go. Sure glad it went that way and not at me or towards the sliding door.
Until I am sure of a setup, I have a scatter shield around it of 5/8" plywood.

thaelin

Oh, and about the hard drive, it seems to be charging these lead acid car batteries quite well. Amazing considering the coil is tiny, well the whole thing is tiny! I think I'll pull the big motor apart and make a small speed demon with four coils. ! I'll have a go at wiring up according to figure 19 on the new page, it looks very promising!

Hi Ren.
Sounds like your having fun. Transfer those electrons - yeh 
Just a little word about safety. I don't want to read about you losing an eye., , If you decide to build some little "guts" machines, with relatively small diameter rotors and low impedance coils and neos, then you should consider taking the time to make planar rotors if you're not already using them.

With low impedance coils, speeds can be astounding! The centrifigal force on your magnets in a radial layout makes them prone to flying off the rotor at very high speeds if they have the slightest weakness in their binding method. They can be lethal as a bullet. I will talk about this issue at some stage in conjunction with optical switching control (far more accurate).

Cheers all, happy pulsing, motorists 

[Ren]

lol. Well glad it wasnt you mate. I think its time to erect the bullet proof fence around my setup...