H bridge switch for small motors


Posted on Dec 26, 2012

Two inputs, A and B, control the bridge. With both high (or open circuit) both ends of the motor are connected to 0v. Connect A low and Tr2 turns on causing the motor to go forward. Connect B low and Tr6 turns on, reversing the motor. If A and B are both low, both ends of the motor are high, so the motor is off.


H bridge switch for small motors
Click here to download the full size of the above Circuit.




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