capacitive sensors

Discussion in 'General Electronics Chat' started by seyibucho, Apr 21, 2007.

  1. seyibucho

    Thread Starter New Member

    Apr 14, 2007
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    Could anybody please explain the principles and Operation of the Capacitive Sensor and probably an application of the Capacitive Sensor.
    I will be very grateful....
     
  2. recca02

    Senior Member

    Apr 2, 2007
    1,211
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    well,
    i have very little experience with capacitive sensor (transducer)
    in my field we use it for measuring the level in tanks or displacement measurement.
    the basic idea of how a capacitor relates to displacement or any other parameter can be understood by the formula
    c = Area*dielectric const/gap
    hence by changing any of these properties we can relate a parameter as directly or inversely proportional to capacitance.
    change in capacitance then can be detected by using the capacitor in an oscillator ckt and a frequency to voltage converter.
     
  3. Ron H

    AAC Fanatic!

    Apr 14, 2005
    7,050
    657
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