Author Options:

The circuit using mc3479 is getting short when i connect the terminal of the coil to my circuit but motor still runs. Answered

The circuit continually gets short circuited the minute I connect the stepper motor terminals to my driving circuit which incorporates a MC3479 chip. The motor however runs smoothly, however my power supply keeps indicating a short circuit preventing me from adequately controlling the stepper motor.


Can you supply more detail: what power supply, which motor, circuit diagram etc? L

Is the motor drawing more current than the power supply can supply?

As Re-design so intuitively suggests, your power supply is probably just at its limit and can no longer deliver current. When its onboard over current protection kicks in, the power supply turns on a lamp that indicates that its current limit is on.