Circuit for Hall effect sensor

Discussion in 'General Electronics Chat' started by chudiandeyu, Oct 26, 2010.

  1. chudiandeyu

    Thread Starter Member

    Oct 26, 2010
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    Hello
    I recently bought a linear Hall effect sensor for measuring current, but I don't know how to make the circuit to measure the current, could anybody help me with this? Please tell me the circuit.
    Thank you very much!
     
  2. bertus

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    Apr 5, 2008
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  3. chudiandeyu

    Thread Starter Member

    Oct 26, 2010
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    @bertus
    Thank you. And after I measured the output voltage of the hall effect sensor, how can I know the current in primary wire?
     
  4. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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  5. beenthere

    Retired Moderator

    Apr 20, 2004
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    The device should have a data sheet that states the sensitivity of the sensor. Even so, you will probably need an ammeter to help calibrate the Hall effect sensor output.
     
  6. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    You need to either use a micro to do the scaling or have some manual scaling factor (for example 10mV=1A)

    I've got a project that uses a hall sensor.. calibration is a pain. Mine measures up to 600 Amps DC. Sensor spaced approx. 3/16" off a copper bus bar.
     
  7. chudiandeyu

    Thread Starter Member

    Oct 26, 2010
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    How can I know the scaling factor?
     
  8. chudiandeyu

    Thread Starter Member

    Oct 26, 2010
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    Does anybody know the block diagram of Honeywell CSLA2EL Hall effect sensor ?
    And how to use this sensor to make a circuit for measuring current?
    And how can i know the relation between the output voltage and primary current?
    Thank you!
     
  9. hgmjr

    Moderator

    Jan 28, 2005
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    Greetings chudiandeyu,

    I have merged both of your posts since they appeared to be identical.

    hgmjr
     
  10. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    All information on sensitivity and size are in the attached datasheet.

    Bertus
     
  11. chudiandeyu

    Thread Starter Member

    Oct 26, 2010
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    @bertus
    Thanks.
    I saw this datasheet, but it does not say what is the connection of primary current and secondary output voltage.
     
  12. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    The datasheet tells you it uses the 99SS12 sensor.
    Here is tha datasheet of that sensor.

    Bertus
     
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