On Jun 13, 2:51 pm, "Zephyr" an address @ some place .com wrote:
Hey folks,

I'm curious about power consumption of things like the power supply for my
dell laptop
its and AC/DC adaptor, and when the unit is charging my laptop it gets quite
warm.
from that I infer that its using a fair amount of power.

now, if I leave it plugged into the wall, but remove the laptop, it does
not heat up, but.
there is a little light on it that indicates it is receiving power.
aside from that little light, is it using any significant amount of power?
The label on the unit says the input is 1.5a

same question goes for my cell phone chargers 0.2a

I understand that some of these things do use power constantly, but... how
much?

I found this link but it doesn't get into the Nitti gritty I was looking
for

http://gizmodo.com/gadgets/gadgets/c...mpire-slayer-a...

Dave

It gets hot when it is hooked up to the laptop because the laptop puts
a load on the charger. No load...there is not a lot of heat.

Any device with a transformer directly connected to the mains will
draw a very minute amount of power...it is called the magnetizing load
of the transformer.....if there is a rectifier and regulator after the
xfrmr...which there most likely is ...I dont see it drawing any power
unless there is a load passing thru it.

of course your indicator light will draw a small amount of power.....