H-Bridge

[Watoto]

Hello everyone! I need a help with my H-brdge(L6203) circuit to drive my Motor. I have 12V at Out-pot J1-1 and 0V at Out-pot J1-2. Ideally that is enough to drive the motor but when I connect the motor nothing happen and both Output terminals are at 12V. It seems that my Motor short cicuirt. When I manually connect the negative to ground, it works. However, I need to connect both terminal to the motor so that I can reverse direction when voltage output volatge from H-Bridge switch. I welcome all idea or solution. Is there any switch or isolation or relay I can use and how because I need to both terminal to control motor for direction

Thank you

Watoto

[MP]

From your description, it sounds as if you do not have enough current to your H bridge circuit. Check out this link for more on H bridge circuits. However, you might be able to just increase the current available to your present circuit and make it work.

http://home.cogeco.ca/~rpaisley4/HBridge.html

MP