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What is the difference between -V and COM which are marked on the output side?

Date:2017-10-18 Hits:129
What is the difference between -V and COM which are marked on the output side?

What is the difference between -V and COM which are marked on the output side?


        COM (COMMON) means common ground. Please see below:

Single output: Positive pole (+V), Negative pole (-V)
Multiple output (Common ground): Positive pole (+V1, +V2,.), Negative pole (COM)