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Thread: Interfacing PIC to industrial automation
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face BY : Andrew Yalowitz email (remove spam text)



I'm trying to interface a PIC to an industrial lighting dimmer that is
expecting a variable current sink of 4 to 20 mA.
What I would like to do is be able to sink current (4 to 20 mA) proportional
to an 8 bit value. The device (a lighting dimmer) is fully on at 4 mA and
fully off at 20 mA. I have been able to handle the user interface portion
and the processing of the data, but I have no clue how to get a pic to sink
a variable amount of current.

Any advice?

TIA


Andrew Yalowitz

<001201be012d$60ac1900$0a00a8c6@andrewsdesktop> 7bit

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Subject (change) Interfacing PIC to industrial automation

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