Hi
I am planning a project that would involve 3.3v logic (microprocessor) driving relatively high-current 24 volt DC solenoids, via a mosfet interface. Can I use separate switched power supplies of the appropriate voltages and power capabilities, and tie the negative side of each supply together and to the overall circuit's ground ? I.e. two separately plugged-in supplies ? I have read things elsewhere on the net suggesting this is a bad idea when the context is a PC motherboard (ground loop currents will flow and upset regulation, or burn up), but I don't think my case is the same. I think they are talking of putting separate supplies of the same voltage in parallel in order to boost the total power available.
Thanks in advance...
Mark
I am planning a project that would involve 3.3v logic (microprocessor) driving relatively high-current 24 volt DC solenoids, via a mosfet interface. Can I use separate switched power supplies of the appropriate voltages and power capabilities, and tie the negative side of each supply together and to the overall circuit's ground ? I.e. two separately plugged-in supplies ? I have read things elsewhere on the net suggesting this is a bad idea when the context is a PC motherboard (ground loop currents will flow and upset regulation, or burn up), but I don't think my case is the same. I think they are talking of putting separate supplies of the same voltage in parallel in order to boost the total power available.
Thanks in advance...
Mark