---
+ Post New Thread
Results 1 to 3 of 3
  1. #1
    Member level 4
    Points: 1,657, Level: 9

    Join Date
    Dec 2005
    Posts
    71
    Helped
    2 / 2
    Points
    1,657
    Level
    9

    DC motor question

    Why should we use PWM to control the speed of the motor and not A/D converter?

    •   Alt21st March 2006, 11:26

      advertising

        
       

  2. #2
    Full Member level 3
    Points: 3,841, Level: 14
    R00KIE's Avatar
    Join Date
    Jan 2003
    Location
    Portugal
    Posts
    150
    Helped
    21 / 21
    Points
    3,841
    Level
    14

    Re: DC motor question

    Because the pwm is an output and the A/D is an input, also even if you had a D/A converter you would use the pwm because it's more suitable to drive a motor.
    PWM - Pulse width modulation, this means that the output is fully on or off and this reduces losses in the motor driver, if you used a D/A you would have lots of losses.


    1 members found this post helpful.

    •   Alt21st March 2006, 15:54

      advertising

        
       

  3. #3
    Member level 5
    Points: 1,759, Level: 9

    Join Date
    Nov 2004
    Posts
    94
    Helped
    2 / 2
    Points
    1,759
    Level
    9

    DC motor question

    Most peocessors have the PWM modules,thew work as D/A convertor



+ Post New Thread
Please login