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Help me with bipolar stepper motor..

Discussion in 'Sensors and Actuators' started by bashok001, Jun 18, 2009.

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  1. bashok001


    Jun 18, 2009
    I am devising a knock lock for which i used a bipolar stepper motor using a mosfet driver..I have four terminals coming out of motors! I connected them all with four mosfets...Now it doesn't I did a small research on internet on bipolar stepper motor drivers and i got these circuit diagrams in which they connected the motor with MC driver as I did but the coils are also coonected to 12 v from their middle...
    From where should this connection be made..??? We have four terminals coming out of motor which are all already engaged completely... So how will this 12v battery connection to motor made?
  2. Resqueline


    Jul 31, 2009
    You'll need 4 half-bridge outputs, 8 transistors in all, to make 2 full-bridge drivers to drive that motor. The top 4 transistors would be connected to +12V. Granted, it's a little more complex than using a 6-wire motor.
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