I have a bipolar stepper motor like attached motor with ~ 4kg, 3 ohm resistance per winding and 160mm x 87mm. I built L297 & L298 driver. I used 5V as power supply for motor (L298 - pin 4) and same 5V as logic voltage for both ICs. I used a computer ATX power supply for that.
It works good with stepper motor BUT the problem it that L298 turns very hot in just 10 seconds and it can blow completely after 1 minute. I did not use heat-sink yet, I just want to do experiment for this time, will add later.
Note: I used the follow schematic and some omitted components are circled.
It works good with stepper motor BUT the problem it that L298 turns very hot in just 10 seconds and it can blow completely after 1 minute. I did not use heat-sink yet, I just want to do experiment for this time, will add later.
Note: I used the follow schematic and some omitted components are circled.
Attachments
Last edited: