Hi all, I just made a H bridge motor driver using a bread board. I followed exact schematic design attached in this post. I used Arduino board to control motor. When motor was running I took off two signal control wires from Arduino board. Most of the time the motor stopped but occasionally, the motor slow down a little then speed up to the normal and keep running. I think the motor should stop because when signal lost, the pull up resistors on the upper side of the H bridge should close the gate of the p-mosfets, so that the motor stop running. Does anyone know this problem? What is the reason and how to fix it.
Thank you
Thank you
Attachments
-
1.7 MB Views: 16
-
2.3 MB Views: 14
-
2.2 MB Views: 11