For one of my hobby projects I would like to use:
to control the
19W) mist maker.
As you can see the both grounds (12V and 5V) are attached to the
com connector of the power supply.
I wonder whether grounds should be decoupled (for whatever reason) - i.e. to use separate power supplies? If the above wiring is OK I would really like to know in which circumstances (if any) a separate power supplies would be needed.
Thanks for all your answers in advance.