Boston Linux & Unix (BLU) Home | Calendar | Mail Lists | List Archives | Desktop SIG | Hardware Hacking SIG
Wiki | Flickr | PicasaWeb | Video | Maps & Directions | Installfests | Keysignings
Linux Cafe | Meeting Notes | Blog | Linux Links | Bling | About BLU

BLU Discuss list archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Discuss] Power consumption

Scott Ehrlich wrote:
> The [stb from Verizon], surprisingly, whether Powered "on"
> or "off" maintained 15 watts continuous.

Were you inspired by one of the articles on this that made the rounds a
few months ago?

Our Set-Top Boxes Suck Up $3 Billion In Energy Every Year

  ...the 160 million set-top boxes installed in 80% of American homes
  consume more than $3 billion in annual power costs. Mostly from after
  we turn them off.

  [Natural Resources Defense Council study said,] "In 2010, set-top
  boxes in the United States consumed approximately 27 billion
  kilowatt-hours of electricity, which is equivalent to the annual
  output of nine average (500 MW) coal-fired power plants."

  ..consider that a recent model HD-DVR consumes more power than an
  Energy Star-certified 42" LCD screen and consumes more than half the
  power of your new household refrigerator.

Jack Coats wrote:
> My guess is that the strip really contains a GFI.  They normally consume
> 1 to 3 watts.

Leakage through the line filter[1] used to suppress transient voltages
is more probable than a GFI on a common power strip.  (Most mid-range
power strips contain some sort of filtering. Rarely do they have a GFI.)
The filtering circuit contains components like capacitors that are
placed across the line.

1. (see Electrical Schematics)


Tom Metro
Venture Logic, Newton, MA, USA
"Enterprise solutions through open source."
Professional Profile:

BLU is a member of BostonUserGroups
BLU is a member of BostonUserGroups
We also thank MIT for the use of their facilities.

Valid HTML 4.01! Valid CSS!

Boston Linux & Unix /