Green Living

How does a smart power strip work?
Answered by Discovery Channel
  • Discovery Channel

    Discovery Channel

  1. The purpose of a smart power strip is to prevent phantom power drain, which occurs when electronic devices continue to draw power even after they are supposedly turned off.

    Like all electrical power strips, smart power strips have a bank of electrical outlets. They also have special circuitry that controls these outlets. When an electronic device goes into standby mode, it doesn't use as much power as it does when it is fully functioning. The circuitry in a smart power strip can detect this drop in power, so it disables the outlet and cuts off the device's power supply. Meanwhile, the rest of the outlets on the strip stay on. Smart power strips typically come with several outlets that can provide "always-on" current.

    More answers from Discovery Channel »



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