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Polarization Hysteresis Ciruit

  1. Nov 21, 2012 #1
    Hi all,
    I want to measure electric polarization hysteresis loop so i need the electric circuit to measure it.
    The circuit mostly contains a resistor and a capacitance, i need to what is the exact value of them ?

    Please tell me if there is a reference for that
    Thank you
     
  2. jcsd
  3. Nov 21, 2012 #2
    note : the circuit called Sawyer-Tower Circuit
     
  4. Nov 23, 2012 #3
    Depending on the material, charge release can be very slow, for instance in electrolytic capacitors. In such a case, the only sensible circuit is to disconnect completely the capacitor, keep it clean in a dry atmosphere, and reconnect it only for the measure. It can take several days before the last 0.1% of charge is released, while the first 20% which are absorbed by polarization are available in few seconds.
     
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