![]() ![]() Step angle of the stepper motor is defined as the angle traversed by the motor in one step. not attached to the same coil), you should see infinite resistance (or no continuity).Īs already said, we will talk mostly on "Unipolar stepper motors" which is most common type of stepper motor available in the market.A simple example of 6 lead step motor is given below and in 5 lead step motor wire 5 and 6 are joined together to make 1 wire as common. If you've got the leads of your meter connected to two wires that are not connected (i.e. You should find two pairs of wires with equal resistance. ![]() You can distinguish them from unipolar steppers by measuring the resistance between the wires. They have two independent sets of coils instead. Unlike unipolar steppers, bipolar steppers have no common center connection. The bipolar stepper motor usually has four wires coming out of it. They are called unipolar steppers because power always comes in on this one pole. The center connections of the coils are tied together and used as the power connection. The unipolar stepper motor has five or six wires and four coils (actually two coils divided by center connections on each coil). There are basic two types of stepper motors available in market. ![]()
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