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11763 Views 6 Replies Latest reply: Apr 23, 2012 1:45 PM by David RSS
doogg1 Novice
doogg1
Currently Being Moderated

Apr 15, 2012 7:48 PM

hall effect sensors

Stupid me.  I've already asked this question but in the wrong forum.  I need to order hall effect sensors for a chinese 48 volt hub motor.  following a post on instructables I ordered SS41"s,  but I noticed the voltage supply is to low for my motor.  I bought a tricycle from a supplier that has a nonexsistant customer service.  Any help you can give me will be greatly appreciated.     

               DOOGG1

  • David designspecialist-lighting
    David
    21 posts since
    Mar 21, 2011
    Currently Being Moderated
    Apr 18, 2012 5:27 PM (in response to doogg1)
    hall effect sensors

    Hi Doogg1,

     

    Well, if you need a hall sensor that will operate with a 48V supply, we don't have one.  The SS41 you mention is rated for up to 24V.  The SS413A (

    http://search.digikey.com/us/en/products/SS413A/480-3584-ND/2561122 ) has the same specs as the SS41 but is rated for up to 30V, which is a little closer, but still not there.  What voltage do you actually need?  Generally, one does not power a Hall sensor with the same voltage as the motor.

    • doogg1 Novice
      doogg1
      4 posts since
      Apr 15, 2012
      Currently Being Moderated
      Apr 18, 2012 9:51 PM (in response to David)
      Re: hall effect sensors

      Thank you David.  I really don't know I'm new to this.  I removed my existing ones to try to get some numbers.  The only readable ones was 125.  The system uses a 48 volt battery/450 watts.  I guess I'll get what I deserve for bying chinese.  most of the electric tricycles being sold cary this power supply

      • David designspecialist-lighting
        David
        21 posts since
        Mar 21, 2011
        Currently Being Moderated
        Apr 20, 2012 1:33 PM (in response to doogg1)
        Re: hall effect sensors

        Hi Doogg1,

         

        No problem.  I couldn't find anything on your Hall sensor numbers, so I don't know what part you have.  If you found some info that sounded like it might work from Instructibles, then that's as good a resource as any (not saying it's actually reliable), but if it worked for them, it might work for you.  Regarding the voltage issue, chances are that somewhere on your circuit board, there's a voltage regulator which knocks the voltage down to a suitable level for the Hall sensor.  Other "intelligent" parts on the circuit board probably also run on that lower voltage.

        • doogg1 Novice
          doogg1
          4 posts since
          Apr 15, 2012
          Currently Being Moderated
          Apr 23, 2012 7:27 AM (in response to David)
          Re: hall effect sensors

          David  thanks for your patience.  I had forgotton ohmn's law.  I placed a volt meter on the hall sensors supply line and it read 4 volts. The SS413A that you recommended falls within this range, I believe the 30 volt higher range is a safety factor.  I have one more question.  Do I have to concern myself with the trip and release factor.  I am waiting for your answer so that I can order. Thanks Again           Doogg1

          • David designspecialist-lighting
            David
            21 posts since
            Mar 21, 2011
            Currently Being Moderated
            Apr 23, 2012 1:45 PM (in response to doogg1)
            Re: hall effect sensors

            Hi doogg1,

             

            Regarding the "trip and release factor", from what I have read, the bi-polar type, such as the SS413A is the type typically used in BLDC motor applications. The unknown specifications are what magnetic field strength sensitivity is required for your particular motor and what the specific pinout requirement is for the hall sensor in your motor.  I suggested the SS413A only because it had about the same sensitivity as the SS41 you had originally mentioned.  The pinout for the SS413A for pins 1, 2, 3 respectively is power, ground, and open-collector output.  Because of the unknowns in your system, picking the SS413A is only a reasonable guess.  Good luck to you.

  • joeyb1960 Novice
    joeyb1960
    1 posts since
    Apr 22, 2012
    Currently Being Moderated
    Apr 22, 2012 6:00 PM (in response to doogg1)
    Re: hall effect sensors

    i have one for you i have hyunbai accent 07 i was told that you eather have hall or mag i think the crank is a mag sine wave 60-2 missing tooth and if the cam is a hall it would have to have how triggers 1 or4 i dont know

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