Originally posted by email@example.com:
So am I able to hook the motor up to DC power and a switch, turn it on an run it? Does such a motor require the circuitry you describe in order to run at all?
Thanks for your help!!!
On a stepper motor, they frequently come with 8 poles whose polarities are changed by switching. the rotor magnetism can be generated by external excitation or a permanent magnet.
A 4 stator winding motor has 8 poles possibly 5 leads coming out of the motor. In order to hook this up properly you will need a wiring diagram because the stator fields are paired these have to recieve a pulse train from the timers. a small dc supply will also be needed.
As stated in a 4 winding stator there are paired fields call them A and A', the second pair B and B'.
A and A' are internally tied together as are B and B'. The center point of each pair of coils is tappen and center point ofBB' is tied to center point AA' a common lead is brought out to make a total of 5 you will need some type of continuity tester to locate the winding leads. the common lead, the center tap receives the pure DC for Excitation, and a series dropping resistor must be used to limit the current to the fields a small pot say 0-5k would work fine.
the other two field leads, once isolated need to recieve the pulse train, the reference for all this can be an output from a 555 timer set up as a one-shot to feed a pair of J-k flip-flops, J-K because you get two outputs from them that is output Q and Not-Q in other words what it is actually a 1 and a 0 when Q goes high Not-Q goes low, all these parts can be obtained from Radio Shack. The inputs J and K must be held high to a 5 volt source and the clocks on the JK receices the input from the 555 timer. Also RS has some literature on Digital circuits and different flip-flops and how they work.
Also the outputs from the flip-flops must be sinked so as not to swamp out the output, this is accomplished with a transistor at each output of the FF ie,Q and Not-Q will recieve a xtr the collectors of the transistors will be tied to the input of the stepper fields.
Give it a try , be creative.