Bipolar Stepper Motor
A bipolar stepper motor for sale has one winding per stator phase. A two phase bipolar stepper motor will have 4 leads. In a bipolar stepper we don’t have a common lead like in a uni-polar stepper motor. Hence, there is no natural reversal of current direction through the winding.
A bipolar stepper motor has easy wiring arrangement but its operation is little complex. In order to drive a bipolar stepper, we need a driver IC with an internal H bridge circuit. This is because, in order to reverse the polarity of stator poles, the current needs to be reversed. This can only be done through a H bridge.
Bipolar stepper motors are a little complex to wire as we have to use a current reversing H bridge driver IC like an L293D. But the advantage is that the current will flow through the full coil. The resulting torque generated by the motor is larger as compared to a uni-polar motor.
They work well for me - especially considering the price. Good torque, quiet enough. Next time, though, I'll order something with detachable leads.
chip.stewart
Will this stepper motor work as a replacement for a soyo sy42sth47-1504a used in the lulzbot mini 3d printer?
Earwigger
Nothing I can complain about. I just wished I purchased something more powerful for my application. I beat up this motor, held it still while trying step, and turning it while it was trying to hold, but no complaints per the motor. I got it stupid hot in an attempt to really work it, and it still responds quite well. So I only have good recommendations for this motor. (I'm going to order the 84oz motors for my application, and use the same seller :D )
kevinb_love
The motor has a good torque if provided with appropriate power. (rating changed to 5 stars) OLD COMMENT :Torque at 12V is not impressive. (I think its < 1 N/m because it barely performs better than a nema 17 rated at 0.42 N/m) EDIT: the driver I use (A4988) has a voltage regulator with a screw allowing to increase the voltage. Doing so increased the torque significantly (and the heat production on the driver). So overall my previous comment on torque does not stand, since this was a matter of power supply/driver.
nick.tracy1980
Ware und Lieferung wie beschrieben, alles bestens.
f.corlier