555 automatic speed ​​governor circuit

Published:2011/5/19 22:11:00 Author:Christina | Keyword: automatic speed ​​governor | From:SeekIC

The circuit is as shown, the motor automatic speed ​​governor circuit is composed of the 555 trigger and a switch tube. R7 and the motor is tandem connection to form the sampling circuit. In the motor regulation speed, the sampling voltage VA<1/3VDD, 555 sets, VT1 conducts and the motor gets power to work; when the speed is overrun, VA>1/3VDD, because the connection of R1, the 555 resets, the VT1 cuts off and the motor has no power, when VA<1/3VDD, the 555 sets, VT1 conducts and the motor gets power to work.



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