Current Indicator

Discussion in 'The Projects Forum' started by Rohit Agarwal, Oct 4, 2014.

  1. Rohit Agarwal

    Thread Starter New Member

    Oct 4, 2014
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    Hi all :) I want to make a circuit that can give any kind of signal or indication when current through a wire increases above a particular value... any ideas??
     
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    Read this data sheet for the ZXCT1009. There are a family of similar chips at Diodes Inc...

    What is the voltage/current of the circuit being monitored?

    What kind of output do you want?
     
    Last edited: Oct 4, 2014
  3. #12

    Expert

    Nov 30, 2010
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    Last edited: Oct 4, 2014
  4. Rohit Agarwal

    Thread Starter New Member

    Oct 4, 2014
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    Thanks for replying, I am working around 230 V (RMS) and 25 amperes.
     
  5. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    Then forget the IC I linked to. You will need a current transformer, a burden resistor, a precision rectifier, and finally some filtering, for a home made solution. The alternative is to buy a calibrated AC Amps to DC transducer
     
  6. wmodavis

    Well-Known Member

    Oct 23, 2010
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    Use a fuse at the appropriate current. Also use an indicating fuse holder that lights up when the fuse is blown.

    Wa La...
    "when current through a wire increases above a particular value" the fuse will blow.
    When the fuse blows the fuse holder indicator will light and " give any kind of signal or indication"

    Elegant and simple based on your needs.
     
  7. inwo

    Well-Known Member

    Nov 7, 2013
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    These work well.
     
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