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Re: [SeattleRobotics] Back EMF circuit

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  • Jim McBride
    Take a look at this. No need for an ADC. http://www.romanblack.com/encoder.htm JIMc ... JIMc x22661 National Ignition Facility [Non-text portions of this
    Message 1 of 3 , Apr 11, 2006
      Take a look at this. No need for an ADC.
      http://www.romanblack.com/encoder.htm

      JIMc

      At 11:25 AM 4/11/2006, you wrote:
      >Hi, I would like to implement closed-loop back EMF control (for either
      >constant velocity or constant position) and I would like to know the
      >best circuit to measure a 9v motor output and take readings from a 0 - 5
      >V ADC. Some methods I see online just use a simple voltage divider with
      >resistors, but if the motor ever generates something like 12 v, wouldn't
      >that damage the ADC ?
      >Thank you in advance.
      >Regards,
      > Gustavo
      >
      >
      >Visit the SRS Website at http://www.seattlerobotics.org
      >Yahoo! Groups Links
      >
      >
      >
      >

      JIMc
      x22661
      National
      Ignition
      Facility



      [Non-text portions of this message have been removed]
    • Michael Jones
      Nice link. I ve been looking for something like this for a while. Mike Jim McBride wrote: Take a look at this. No need for an ADC.
      Message 2 of 3 , Apr 11, 2006
        Nice link. I've been looking for something like this for a while.

        Mike

        Jim McBride <mcbride7@...> wrote:
        Take a look at this. No need for an ADC.
        http://www.romanblack.com/encoder.htm

        JIMc

        At 11:25 AM 4/11/2006, you wrote:
        >Hi, I would like to implement closed-loop back EMF control (for either
        >constant velocity or constant position) and I would like to know the
        >best circuit to measure a 9v motor output and take readings from a 0 - 5
        >V ADC. Some methods I see online just use a simple voltage divider with
        >resistors, but if the motor ever generates something like 12 v, wouldn't
        >that damage the ADC ?
        >Thank you in advance.
        >Regards,
        > Gustavo
        >
        >
        >Visit the SRS Website at http://www.seattlerobotics.org
        >Yahoo! Groups Links
        >
        >
        >
        >

        JIMc
        x22661
        National
        Ignition
        Facility



        [Non-text portions of this message have been removed]



        Visit the SRS Website at http://www.seattlerobotics.org
        Yahoo! Groups Links










        [Non-text portions of this message have been removed]
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