Circuit setups for pulse motors

[Nastrand2000]

Ren,
I send the spike directly to a cap. In fact the diodes on the capture side are not entirely necessary. I use them when charging a battery so that if anything happens to stop the motor, the battery doesn't have any possible chance at discharging. As for the meter reading, I just swapped mine around and I too get a lower reading.
Jason

[Ren]

hmmm interesting. So no diode on capture side, only on return. Capture diode is to stop current drain from primary if motor stops.

Also, I have nearly completed a simple circuit borrowed from Bedini ssg. It uses the first winding to trigger the second, like yours. It has a 1k pot and 100 ohm resistor on the trigger coil, the firing coil runs to collector on the npn. I am going to hook it up but I am unsure of whether it will fire due to my coil being less winds than Bedinis specs. Is it possible that the 1k and 100 ohm will be too high/low for the coils I use? Would it be as simple as shuffling these parts with others to find something that works or would I just be better off winding a coil to spec?

Sorry, still trying to get my head around firing from a secondary winding. Thanks for your help Jase

[Nastrand2000]

Ren,
I don't put any resistance on my driving coil. All of my resistance is on my trigger coil. I have a 1.5k resistor inline with my pot. This controls how much current I allow to the driving coil through my transistor and reduces the stress on the pot. As for the coil itself, I never worried about Bedini's design, I use about 1/3rd the wire.
Jason

[Nastrand2000]

Also the only diode that is necessary to run this motor (or a motor like mine, North south north south setup)for experimental purposes,  is on the trigger coil.
Jason

[Ren]

Ok, thanks. I also have no resistance on the drive coil in this schematic. I thought the variable pot and resistor on the drive winding might have some effect as to when the trigger coil completes the circuit allowing the drive to fire.

When magnet passes the drive (and fire coil in this case) coil it creates a voltage in the coils which in turn triggers the transistor to connect the drive coil to + and - completing the circuit. When magnet passes  away transistor disconnects circuit because voltage in secondary winding has dropped. Is this pretty much how it works? What purpose does the pot have? Does it create more resistance in the secondary winding thus creating a higher/lower voltage and thus allowing different timing because transistor fires at a set voltage?

And your diode allows current/voltage to only pass one way on the trigger coil, thus effectively blocking negative current produced by the south pole and only allowing transistor to fire on the north?

Hope those q's made sense.