Two phase stepper electric agent only 2 on the stator winding, 4 pinout, generally the whole step by step from the Angle of 1. 8 degrees, half step by step from the Angle of 0. Only 9 degrees, drives to control two phase winding electric circulation break through is ok; And four phase stepper motor with four windings on the stator, eight pinout, whole step for O. 9 degrees, half step is 0. 45 degrees, drive need to control four windings, complexity and cost of the circuit will increase. Therefore, generally two phase and two phase stepper motor drives, need a smaller interval Angle, subdivision driver can be used. Some companies will be two phase of line 4 and line four phase eight step motor known as two phase stepper motor, drive also seems to be only two phase. This is because, after four phase windings of two parallel or serial became two phase winding, four phase motor turned into two phase, but the series or and cib multiplying change, make the motor winding resistance and inductance motor running performance will also have obvious changes. Got behind in general, four phase and two phase, when using the motor has good speed performance, high torque to keep good, but the motor current will be four phase 2 times, fever, corresponding to the requirement of actuator output ability raise; And four phase in series into two phase, when using motor has good stability at low speed, less noise and fever, to drive demand is not high but high-speed torque loss is bigger. Some companies drive all of the two phase design, four phase stepper motor must convert into two phase to use. So these companies often ask customers, hope motor in series or in parallel. 8 line stepper motor in the past, when the strict standard into four phase, the customer will naturally think four phase motor and two phase drives do not match, so a lot of companies will simply four phase stepper motor and two phase stepper motor are standard into two phase. 'Two phase stepper motor and four phase stepper motor is essentially the same thing' that the real reason. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone: