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Practical Tips

Image of the output load at the input

The loop-powered isolator conveys the input signal to the output without converting it, i.e. 4 mA appear as 4 mA at the out put and 20 mA appear as 20 mA at the output. The situation is similar regarding the burden on the output:

If I require an 8-volt burden voltage at the output, the input will also require 8 V plus the auxiliary power from the input circuit.

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