Circuit setups for pulse motors

[hoptoad]

i understand the principal of pulsing, its a known fact that even factory made electric motors suffer no noticable loss in performance if the electrical input is regulated in equal pulses of off and on. however i do not understand the back emf. i know what it is however how is it collected? is that what the outer coil is used for? and can the firing coil be set up with a diod to collect back emf?  does collecting the back emf for use have an impact on the motors performance verses not using the back emf?

@Artic
You are correct that even factory made electric motors suffer no noticable loss in performance if the electrical input is regulated in equal pulses of off and on. Pulse Width Modulation is the preferred means of controlling all DC motors.

It may be tedious reading, but the answers to your questions might be on Pages 2+3 and Following Pages at this link below :

http://www.totallyamped.net/adams

Cheers from The Toad Who Hops 

[casman1969]

@ HopToad

Thanks for the link, it helps to clarify. I'm going through various common steel tubes to see which ones will work the best but as usual it will be trial and error. In the link, you said they work better as pickup coils and I do believe it but I'm more focussed on the drive aspect.
Can you suggest the optimum AWG wire size for drive coils if I'm using 2 X 1 X 1/2 N42 Neos?
Currently using 20AWG and have a single winding resistance of +/- 6 ohms and can adjust my input to approximately .1 amp. This arrangement gets me pretty good BEMF on second winding and I feed that serially to three more pickup coils giving me a FWB rectified 49V which I'm pulsing (10K MFD cap) back while motor is between drive pulses. Damn thing will go figuratively forever with very little drop on battery. Yes I'm learning and yes I'm having a ball. Thanks for your research and good work.
I check up on this site every day (work does have a way of interfering!!!)
Thanks again,

Carl

[bakercool]

Hello All!

    I'm almost done restoring my 59' Ford, and still waiting for a lot of the stuff I ordered to come in (like the rotor, etc).  I'm hoping to start building my motor in about 2-4 weeks, depending on delivery.. EXCITING TIMES!!!!   

    I have been searching desperately to find a way to take a car battery, and reduce the voltage down to about 12v - 5amp (or less amps).  I hooked up a potentiometers, but it just went POP! and that was the end of that.   

    Do I have to buy/make a circuit to reduce the amps coming from the battery?  I thought I would only need a resistor, but the ones I bought just overheat real fast.  Any help would be greatly appreciated!!!

    Corey

[Nastrand2000]

@bakercool,

The way I control current flow in my motors is by adding or decreasing resistance (with resistors) to my trigger coils. Hope that helps.
Jason

[bakercool]

@Nomen
I looked into the resistance in the coil, but want to run specific amounts of turns.  Thanks for the input though!

@Jason,

Thanks!  I tried some resistors, but they all overheat superfast.  Is there like a resistor "number" I can get from you?  I'm having a hard time figuring these things out..  I got a DC Converter so I can continue to test my Coils from 5-24 Volts, that should be cool...  I need to get my amps down though..  Thanks Jay!