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Explanation of this circuit .. =(

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by Pink Angel, Jan 18, 2010.

  1. Pink Angel

    Pink Angel New Member

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    Hi all ..

    I need your help in this circuit .. It is Electricity Detector ..

    I found the Circuit but I want an explanation for it .. what are the components and what does its job .. How the whole Circuit Work ..

    This is the Pic of it :

    [​IMG]

    Any Help is Greatly Appreciated ..
     
  2. MikeMl

    MikeMl Well-Known Member Most Helpful Member

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    The CMOS inverter between pins 1-2 is biased to act as a linear amplifier by the 10meg. Inverter 1-2 drives inverter 3-4 and 5-6. This makes a high-gain, high-input impedance amplifier which senses the presence of 50/60Hz AC due to capacitive coupling between the wire carrying the AC and the "aerial" probe. Two more inverters are a mulivibrator which is used to drive the Piezo speaker ("bell"). The remaining inverter drives the LED when the AC signal causes the first two inverters to switch.
     
  3. Pink Angel

    Pink Angel New Member

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    THX ALOT MikeMl

    But can u tell me what r the components .. and what is used 4 ...

    PLEASE HELP ME :(
     
  4. dave

    Dave New Member

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  5. MikeMl

    MikeMl Well-Known Member Most Helpful Member

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    Are you asking what resistors, capacitors, diodes, transistors, LightEmitting Diodes, and a CMOS hex inverter is?
     
    Last edited: Jan 19, 2010
  6. Pink Angel

    Pink Angel New Member

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    Yes this what I want ..

    Please tell me .. :(
     
    Last edited: Jan 19, 2010
  7. MikeMl

    MikeMl Well-Known Member Most Helpful Member

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    You are asking me to teach you a basic course on Electricity and Electronics. Do you have about 8 weeks? (I don't)
     
  8. Pink Angel

    Pink Angel New Member

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    ok Sorry Mike .. I will try to learn it my self ..

    but can u just explain the circuit in a simple way for a noob like me .. from the start like the + goes to the board then it's goes to ... the Areial sense the presence of the AC and then it will go to ....

    just the way like this from the Begining please ..

    I really appreciate your help for all u told me ..

    and sorry ..
     
    Last edited: Jan 19, 2010

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