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Current Transformer with Arduino

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  • robertferanec
    replied
    Hmm ... it may be quite difficult to debug the problem without a scope. You may need to see the waveforms on arduino pin.

    How do you calculate the values what you show?

    Leave a comment:


  • Lakshmi
    replied
    Originally posted by robertferanec View Post
    Did you try to connect oscilloscope the aurduino pin? What is the waveform like?
    No, We don't have access to Oscilloscope here.

    Leave a comment:


  • robertferanec
    replied
    Did you try to connect oscilloscope the aurduino pin? What is the waveform like?

    Leave a comment:


  • Lakshmi
    started a topic Current Transformer with Arduino

    Current Transformer with Arduino

    Hi,
    I have CT with below specs:
    Primary Current: 100A, Turns ratio: 2500:1.
    Solid core and PCB Mountable type.
    Link: https://www.electrohms.com/product-ct1273-a1-rc

    I'm trying to measure 60W Bulb current consumption using arduino.
    I have followed this reference example:
    https://learn.openenergymonitor.org/...e-with-arduino
    with the burden value of 42 Ohms since in my case, for 100A input primary CT will generate a secondary of 40mA.

    I tried to run the code. But I'm returning with a random value when bulb is off, current is showing 2.02 and when I turned bulb on it shows 1.85.
    Could any one please help me with what I'm doing here?
    I've used the same code.
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