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Want proper stepper driver circuit for bipolar stepper motor

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sankposh

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I have a stepper motor whose torque is 220kgcm and after using gear box ratio 1:20 the final torque comes out to be 44kgm
Iam implementing a circuit with irfz44 and mtp2955
is this circuit applicable for my motor to run
or could any one suggest me some changes
 

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  • driver bipolar circuit.GIF
    driver bipolar circuit.GIF
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  • stepper motor specification.JPG
    stepper motor specification.JPG
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iam not using D flip flop
iam generating 5V pulse from microcontroller and then amplifying to 12v pulse square wave
and applying to R5,R6,R11,R12
 

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