pulse motor Working video and info

[Nastrand2000]

The coil is switched with a transistor.  the poles on the rotor are north south north south.  Bemf is captured by connecting wires between the collector and the emitter of the transistor.

[Nastrand2000]

the magnets are neos 2 inch wide by 1 inch in depth. The coil to run this motor is bifilar without a iron core..so an air core. the rotor is 2 inches in diameter using crap bearings

[tropes]

the magnets are neos 2 inch wide by 1 inch in depth. The coil to run this motor is bifilar without a iron core..so an air core. the rotor is 2 inches in diameter using crap bearings

The coil is switched with a transistor.  the poles on the rotor are north south north south.  Bemf is captured by connecting wires between the collector and the emitter of the transistor.

Nastrand
Do you wind your own coils?
Have you ever used a solid core or attraction by the rotor magnets to the coil cores in any of your motors?
Are you using a Hall IC or Reed switch?  Do the wires go directly from the transistor to a capacitor? Is there not lag time between the pulse to the coil and the captured bemf?
Are you familiar with the Adams Motor?
What do you mean by crap bearings?
Peter

[lasher23]

Hello all,

I'm a long time lurker here at overunity. Until now I haven't had anything interesting to add to your discussions. I have a suggestion for anyone thinking of a replication of this device.
I am a tattooist by trade and the machines we use to tattoo with are basically electromagnetic oscillators. Tattoo machines are actually based on old doorbell technology if you can believe it. Anyway, to sum this ramble up, tattoo machines use very nicely wound iron core electromagnets which are available to purchase all over the net. They come in various core lengths, the most common being 1 and 1 quarter inch. They range from 8 wrap to 12 wrap and also come in different wire gauges. They come in pairs, are not terribly expensive, and are very strong. Just food for thought if any of you builders are looking for uniformly wrapped, small, electromagnetic coils. One last thing, the coil cores are drilled and tapped at one end which makes mounting them securely a breeze. If all of this is useless, just ignore it.

Regards,

Jason

[tropes]

[/quote]

Hello all,

I'm a long time lurker here at overunity. Until now I haven't had anything interesting to add to your discussions. I have a suggestion for anyone thinking of a replication of this device.
I am a tattooist by trade and the machines we use to tattoo with are basically electromagnetic oscillators. Tattoo machines are actually based on old doorbell technology if you can believe it. Anyway, to sum this ramble up, tattoo machines use very nicely wound iron core electromagnets which are available to purchase all over the net. They come in various core lengths, the most common being 1 and 1 quarter inch. They range from 8 wrap to 12 wrap and also come in different wire gauges. They come in pairs, are not terribly expensive, and are very strong. Just food for thought if any of you builders are looking for uniformly wrapped, small, electromagnetic coils. One last thing, the coil cores are drilled and tapped at one end which makes mounting them securely a breeze. If all of this is useless, just ignore it.
Regards,
Jason

Hey Jason
I just did a search of "tattoo machine" at Answers.com and actually learned something!!
Thanks,
Peter