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Stepper Motor Controller Circuit Diagram
Seeking circuit diagram for stepper motor controller

I want complite circuit digram of stepper moter controler and i have 1 chinese controler. Inside controler there are 6 ics the 1 to 5 ics no is LM2901 and the 6th ic number is very dificult to find out. Can anybody help me to find out this
6th ic have 14 pin
pin no 3 -5volts
pin no 11+5volts
pin no 1,8,9 input (from optocoupler)
pin no 10,12,13,14 output (to LM 2901)

The information you have given is insufficient to determine the circuit diagram. I would recommend that you call the manufacturer or search the internet for technical documents on the controller.