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I NEED A SIMPLE 4mA-20mA DIGITALLY VARIABLE CURRENT SOURCE

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roykyn

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variable current source

I NEED A SIMPLE 4mA-20mA DIGITALLY VARIABLE CURRENT SOURCE
it should be digitally controlled...may be 12 bit is enough
 

4ma to 20ma why is using

Here is an example of 4-20mA tester based on PICAXE microcontroller:

It is 10-bit conversion and the code can be easily modified not to take control form a potentiometer but from the serial port ..

Regards,
IanP
 

0 to 20ma variable current source

AD421
**broken link removed**
 

what is the 4ma-20ma

sorry cant use the picaxe....the methoud u suggest should be the cheapest....
 

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