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H-Bridge — Parallax Forums

H-Bridge

computer guycomputer guy Posts: 1,113
edited 2007-11-06 19:19 in General Discussion
Hi

I want to make my own h-bridge. confused.gif

Does anybody know of a H-Bridge circuit that uses a Variable Resistor to control speed.
That can control a motor at 12V 15A.


Thank you smile.gif

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Comments

  • DgswanerDgswaner Posts: 795
    edited 2007-11-06 19:19
    The beauty of the H-bridge is that you can change direction and brake a motor with logic level inputs. if you want to control the speed of a motor based on a Pot, I think you want to look for a PWM control circuit. here is a link to one that uses a multi turn variable cap for speed control. http://www.discovercircuits.com/H-Corner/PWM.htm it doesn't meet your 15A requirement. but perhaps it will get you looking in the right direction.

    just out of curiosity what are you using a 12V 15A motor for. that's got to be a serious motor.

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    A complex design is the sign of an inferior designer. - Jamie Hyneman, Myth Buster
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