Hi All,
One aspect of electronics that I've never fully understood (or seen a good description on) is when it's OK for two devices to share a ground connection? E.g. if I am controlling a piece of industrial equipment (e.g. a pump which takes a 0-5V) with a rather more delicate microcontroller board, should these devices share the same ground (this may risk spikes on the pump entering the uC?) or on a separate ground (e.g. opto isolated etc.).
Thanks if anyone can help me try and understand this grey area.
Fastwalker
One aspect of electronics that I've never fully understood (or seen a good description on) is when it's OK for two devices to share a ground connection? E.g. if I am controlling a piece of industrial equipment (e.g. a pump which takes a 0-5V) with a rather more delicate microcontroller board, should these devices share the same ground (this may risk spikes on the pump entering the uC?) or on a separate ground (e.g. opto isolated etc.).
Thanks if anyone can help me try and understand this grey area.
Fastwalker