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    This motor speed controller uses a single IC LM1014 to control the speed of a DC motor. It senses the increase in the motor-current when the rotation of the motor slows down due to a load. The IC then increases the motor voltage so that the original speed is recovered. P1 potentiometer varies the speed of the motor.

    Motor Speed Controller Circuit Schematic

    dc motor speed controller schematic

    LM1014 is a monolithic IC specially designed to provide a low cost motor speed regulator for low voltage DC motors.

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    3 Responses to "DC Motor Speed Controller Circuit"

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    1. sandeep says: on July 26, 2011 at 9:43 am

      sir,how to control dc motor using atmega8 micro controller please send me the details

      • FOR THE ATMEGA8 u dont require anything else for controling speed of motor try uisnd coding of delAy timer . .. . as b000100010 and b00000000 . altermatively

    2. Olá, gostei dos projetos de controle de motores ac e dc,gostaria de obter esses esquemas p/ controlar motores ac em 110v e tb dc de maior potencia, pelo menos até 5A,no aguardo de um retorno

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