Hi,
I've designed and built a dual rail PSU. I now want to use an Arduino to monitor and control it. The most important feature is to display current supplied by the positive and negative rails. I was planning to use Maxim 437x high side current sense ICs.
Can I use them for both positive and negative rails by simply reversing the shunt inputs R- and R+? Since the Arduino/Maxim grounds are floating with respect to the PSU ground, I guess that would just work? Or would this mean that I'd need a low side current sense IC for the negative rail? This is the type of thing I'm thinking of.
I've designed and built a dual rail PSU. I now want to use an Arduino to monitor and control it. The most important feature is to display current supplied by the positive and negative rails. I was planning to use Maxim 437x high side current sense ICs.
Can I use them for both positive and negative rails by simply reversing the shunt inputs R- and R+? Since the Arduino/Maxim grounds are floating with respect to the PSU ground, I guess that would just work? Or would this mean that I'd need a low side current sense IC for the negative rail? This is the type of thing I'm thinking of.