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Power sourcing equipment having bipolar junction transistor for controlling power supply and supporting AC disconnect-detection function

  • US 20070133238A1
  • Filed: 04/19/2006
  • Published: 06/14/2007
  • Est. Priority Date: 12/12/2005
  • Status: Active Grant
First Claim
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1. A system for supplying power to a powered device over a communication link, comprising:

  • a power supply device having a controller and an output port coupled to the communication link, and a bipolar junction transistor (BJT) controlled by the controller to provide power to the output port.

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