Nice job on the H-bridge work. I tried to meet with a prof at GT today to get some tips but he was out of the office. It looks doable and quite simple from the picture. I am posting a schematic I found that seems to be more complicated for the H-bridge. I also am adding the motor description .pdf. Could you elaborate further on where the A, A-, B, and B- are connected into the H-bridge. I imagine one H-bridge is for A and the other is for B connections. I don't know if it is better. I understand there are PNP and NPN transistor, but are MOSFETS of a different category completely or are there PNP... MOSFETS as well?
I need to get something straight:
these motors are 8 wire 4 phase steppers. It is 6.3 Amps per phase. I am intending on running all 4 motors from one driver. Does that mean that each MOSFET must be able to release 25 amps? Then these diodes will also need to be able to withstand the 25 amps without breaking down correct? Are you using a special type of diode or any will do?
Also: I am going to try to do the wiring to the motors this weekend as they are 10 feet away from where I can put the driver. It is an 8 wire stepper but will be in bipolar parallel configuration. Does this mean that only 4 wires are necessary to the stepper motor. That is my assumption based on the wiring diagram?
I am sorry to bombard you with so many questions, my final one is I have a solder-less breadboard and I was wondering if you think the breadboard would be able to handle the 25 amp loads? It is a 3,200 point breadboard with 4 Power supply connections. Thanks for all your help.