Stepper Motor Voltage Supply

AbhishekAnand

I am using these stepper motors for my project.


1. 19 kg-cm, 3.2 V, 2.8 A
http://robokits.co.in/shop/index.php?main_page=product_info&cPath=2_4&products_id=350


2. 10.2 kg-cm, 3.3 V, 2 A
http://robokits.co.in/shop/index.php?main_page=product_info&cPath=2_4&products_id=349


3. 4.2 kg-cm, 1A
http://robokits.co.in/shop/index.php?main_page=product_info&cPath=2_4&products_id=442


My problem is the voltage ratings of these motors.
I know that the torque developed by the motor is proportional to the current through it but I am not sure how the voltage applied affects it. I want to understand that first.


Then, next question is, can I use a simple L298 based motor driver to control the motors. L298 IC can handle a max of 4A at a time, which is more than enough for these motors. What about the voltage. How can I provide exact voltage (3.3 V or 3.2 V) to the motor. What if I don't give the exact voltage and use a 5 V or 12 V supply?


The motor driver board that I am planning to use has only one supply. It then uses a 7805 voltage regulator to supply the L298 IC.
If I jack it up to a RPS at 3.3 V & 2 A, will it work ??


This is the driver I am using.
http://probots.co.in/index.php?main_page=product_info&cPath=54&products_id=197


Thanks.