SHIV121

4-20ma from potentiometer

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Hello guys,,,

Im in trouble with basics....actually i want to generate 4-20ma from potentiometer. I given the 24vdc supply to potentiometer. I have to give varying potentiometers 4-20ma output to the plcs analog input. 

Please tell me what is the circuit for making this using potentiometer. 

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A picture say more than a thousand words ;-)

 

4-20ma_LM317.png.0a3b70469afef1a938229df

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Thank you for reply.....

please tell me how much the resistor of that potentiometer and series resistor ???? 

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It's stated in the picture.

62,5 ohm for the resistor and 250 ohm for the potentiometer

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ohhh great....just i have to buy LM317 IC now

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