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Smart plug having plug blade detection

  • US 9,742,128 B2
  • Filed: 06/29/2015
  • Issued: 08/22/2017
  • Est. Priority Date: 06/29/2015
  • Status: Active Grant
First Claim
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1. A smart plug comprising:

  • a power plug configured to receive an alternating current power signal from shore power;

    a power receptacle configured to receive a plug having a plug blade;

    a plug detection switch configured to detect receipt of the plug blade in the power receptacle;

    a rectifier circuit configured to rectify the alternating current power signal received at the power plug when the plug detection switch is actuated by receipt of the plug blade, wherein the plug detection switch prevents rectification of the alternating current power signal by the rectifier circuit when the plug blade is removed from the power receptacle; and

    a logic level converter configured to receive the rectified power signal to convert the rectified power signal to a logic level signal.

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