4-20 mA current loop circuit


Posted on Feb 5, 2014

Continued from the previous post. The same priciple is true for the followings, temperature to current transmitter. In this case the input voltage is propotional to the measured temperature, not the rotation.  Temperature input, full analog, 2 wire, 4-20 mA loop powered transmitter U3 is a low cost, NTC based, integrated temperature sensor. The next..


4-20 mA current loop circuit
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