Does a tranformer if switched on with nothing drawing current from the low current outlet stiill use power?
I notice if i leave my laptop mains unit on but not connected to the pc, it stays cold.
If i connect the laptop it warms up--
so if it`s cold, does that mean it is not drawing power?
Also the house phone charge units--if no phone plugged in ,do they still use power?
I notice if i leave my laptop mains unit on but not connected to the pc, it stays cold.
If i connect the laptop it warms up--
so if it`s cold, does that mean it is not drawing power?
Also the house phone charge units--if no phone plugged in ,do they still use power?