What does reversible mean in the context of sensors?

Discussion in 'Homework Help' started by Volt, Dec 12, 2010.

  1. Volt

    Thread Starter Member

    Nov 28, 2008
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    What does reversible mean in the context of sensors?

    I have searched for ages and can't find anything!

    I have been asked to describe what makes the ideal sensor and that was in the list.

    Thanks in advance.
     
  2. tyblu

    Member

    Nov 29, 2010
    199
    16
    perhaps that you can reverse the anode and cathode with no ill effect, or that it can take valid measurements both increasing and decreasing from its rest state (eg. pressure sensor could measure expansion or negative force).
     
  3. Georacer

    Moderator

    Nov 25, 2009
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    Or maybe a photoresistor would be a simpler example. It's a resistor after all, polarizations of pins is irrelevant.
     
  4. Wendy

    Moderator

    Mar 24, 2008
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    Are you sure the OP isn't talking about transducers that go both ways? A speaker is also a microphone, an antenna can convert an RF signal into electricity, and RF electricity into RF. There are many cases a transducer swings both ways.
     
  5. Georacer

    Moderator

    Nov 25, 2009
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    Well, none can be wrong, since the question is so vague...
     
  6. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    After Googling irreversible sensors, I believe that a reversible sensor changes state when the relevant stimulus is sensed, and changes back when the stimulus is removed. In contrast, an irreversible sensor continues to indicate that the stimulus has occurred, even when the stimulus is removed.
     
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