ACS712 current sensor applications

1. Schematic

The first of which is 7-pin output voltage value, the current value and the measured voltage What is the relationship? See the figure, there are three ranges, I use the current of 20A, voltage of 100mV corresponds to a current 1A

See the figure, different temperatures have an impact, but not much different

Finally, the formula for calculating the current voltage U = I * 0.1V + 2.5V

 

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Origin www.cnblogs.com/429512065qhq/p/10994408.html