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A gauss meter_help

  1. Mar 19, 2010 #1
    im working in a project requires a measuring of magnetic Fields
    all i need right now is a device to build up a gauss meter i have found a one using a hall effect
    transistor here in this link http://www.coolmagnetman.com/magmeter.htm
    but these hall effect transistor isnt found in Egypt
    so any one can tell me ant other device can be used
    like a certin transistor maybe Mosfets
    thanks;
     
  2. jcsd
  3. Mar 20, 2010 #2
    There is an easy way to measure magnetic fields using only wire, an op-amp, a resistor, capacitor, and a voltmeter, if you have a big enough volume of uniform field (about a 5-cm cube). This because Faraday's Law may be written

    ∫V·dt = -∫B·dA

    (So volts times seconds = Teslas times m2)

    See my post # 27 in

    https://www.physicsforums.com/showthread.php?t=70290&highlight=flip+coil&page=2

    Bob S
     
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