Hi, I am facing a problem with a project where I am using a laser. The laser needs between 18 and 30V to work, I am using multiple batteries for that. The laser measures a distance from 8 cm to 30 cm and converts it to a 4-20mA output. I am applying it to a 220 ohm resistor and measuring the volta…

control laser input/output

system May 15, 2014, 7:44am 6

No, I'm sure it is not noise, the value is steady over time

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