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How to take Pulse out from the Energy meter

Discussion in 'Project Kit's Album' started by Binu, Apr 27, 2009.

  1. Binu

    Binu Administrator

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    1. Open the Energy meter first
    [​IMG]

    [​IMG]

    2. Just Cut the Cathode terminal of the Cal LED
    [​IMG]

    3. Solder 2 wires on the 2 ends of the LED.
    [​IMG]

    4. Connect the Cathode of the LED to the Pin1 of the Opto-coupler (MCT2E) and the other end of the LED to the Pin2 of the Opto-coupler
    [​IMG]

    [​IMG]

    5. Connect pin 4 of the opto-coupler to a Black wire and Pin5 to the brown wire.
    Connect the Black wire to the ground of the circuit board for the projects Prepaid energy meter or Auto meter reading projects.
    The Brown wire carry's the pulse output.
    [​IMG]

    6. Connect the power supply and load as per this picture.
    [​IMG]
    amay12 likes this.
  2. Krisha Marathe

    Krisha Marathe New Member

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    Where to connect Brown wire to get KWH readings in Atmega16 (microcontroller)? and how?
  3. Binu

    Binu Administrator

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    You have to calculate the KWH readings from the pulse.
    Modern Energy meters comes with serial port, which gives out all data's through it.
    amay12 and krish108 like this.
  4. krish108

    krish108 New Member

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    do we need to connect 5v to the optocoupler??..how does it work??
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