I need to drive a unipolar stepper motor with only two outputs.·
I found a simple circuit that uses a ULN2003.·
It says that since coil 1 and coil 2 are always the inverse of each other (i.e. if coil 1 is high, coil 2 is low),·
and like wise with coil 3 and coil 4, you really only need two inputs.·
Can anyone walk me through this circuit? (See figure 1)
What is the 5V for? Could I just use a flip flop to provide the inverse voltage?
Thank you so so much!!!