To find the current through the diode and coil using ADC

Discussion in 'The Projects Forum' started by Anish723, Apr 26, 2015.

  1. Anish723

    Thread Starter New Member

    Apr 26, 2015
    9
    0
    Hello,

    I am into a project to find the current through the diode D1, and coil as in figure. It is a sealed relay with the diodes and coils inside. Only terminations are available for the measurement. Please help.

    upload_2015-4-26_16-37-39.png
     
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
    1,066
    Put a small resistor in series with termination2, and then measure the differential voltage across the resistor. Isn't that voltage proportional to the current through the resistor? If you do not think so, go study Ohm's law some more...
     
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