In both cases I used a 1ohm 2.5W resistor as current sensing resistor, and used a potentiometer to limit the Vref to 0.5V. I have never worked with steppers before so not sure what to expect, but I think something is wrong here. For both circuits it seems like the L297 works as it should, as I have looked at the outputs on a oscilloscope, and the sequence match what I want. I intend on driving both in half step mode, but I have tried both for testing purposes. I have now constructed two of these and both seems to have some issues.Ībstract: single phase PWM inverters circuit diagram internal circuit diagram for ic L297 mosfet schematic dc motor driver CD4001 pin oscillator pwm generating using mosfet LS7290-S chopper control circuit for dc series motor 5V unipolar STEPPER MOTOR cmos ic cd4001 BE. The circuit consist of the L297 and SLA7024M motor driver. I am currently building a stepper motor circuit for a small robot.
0 Comments
Leave a Reply. |