Current Sensor

Discussion in 'The Projects Forum' started by Cerkit, Mar 10, 2009.

  1. Cerkit

    Thread Starter Active Member

    Jan 4, 2009
    275
    3
    Hi. I'm trying to setup a current sensor. How can I set it up in order to measure current in the following circuit

    Code ( (Unknown Language)):
    1. Vdd-------Load-------Gnd
    ?
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
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  3. Cerkit

    Thread Starter Active Member

    Jan 4, 2009
    275
    3
    Yeah. Not helpful unfortunately because if I could use an ammeter for the job I would. I am only allowed to measure voltage in my project using an ADC.
     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
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    What kind of load is it?
     
  5. Cerkit

    Thread Starter Active Member

    Jan 4, 2009
    275
    3
    Resistor load
     
  6. mik3

    Senior Member

    Feb 4, 2008
    4,846
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    If it is a resistor load just measure the voltage across it and divide by the resistance to find the current.
     
  7. Cerkit

    Thread Starter Active Member

    Jan 4, 2009
    275
    3
    The resistor value is unkown hence I need the voltage and current readings.
     
  8. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Put a 1 ohm resistor in series with the load and measure the voltage across it. The voltage across the 1 ohm resistor will equal the current through it.
     
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