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  1. #1
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    get power from 4-20mA signal line

    I need help for how to get 24V/2mA from 4-20mA signal line, any recommendations and experiences are welcome.

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  2. #2
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    You probably wouldnot get a full 24v, but I have seen circuits getting about 8 volts from this line. It also depends how much the loop of 4-20ma is powered up with.



  3. #3
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    hello

    AD company have several AN on this,you can see the data sheet of AD*693 for lo0p p0wered m/a lo0p.

    NS also have several AN on this subject.

    bye



  4. #4
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    4 mA max

    The current drawn must be lower than 4 mA unless the data you are sending over the line will never be a value represented by low currents.



  5. #5
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    Found somewhere on the net

    Schematic foud somewhere on the net ...



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