power consumption

ELECTRONERD

Joined May 26, 2009
1,147
Does a plugged in, but powered off computer consumes energy?
Yes it does. One of the computers I have will have this LED inside it glow even though the computer is powered off.

It's almost like a wall-wart or adapter; it's plugged in but there is still power dissipation across the transformer, rectification diodes, and filteration caps. But the power consumption isn't very much, it will significantly increase when a load is applied.

Austin
 

SgtWookie

Joined Jul 17, 2007
22,230
A portion of the power supply (a "pilot" 5v supply for ATX form factor) is always running, even when it's turned off.
 
Top