Hi I need help as I'm just not getting this..
Sinking - Power externally supplied. Current passes through load, then into sensor and then to ground.
Sourcing - Sensor uses supply voltage to pass current. Sensor drives current out, through the load on to ground.
I really can't picture how this works even using google images!
Does sinking have a constant supply and sourcing doesn't?
Sorry it just isn't making sense to me.