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Household appliance circuit arrangement

  • US 9,647,490 B2
  • Filed: 03/29/2011
  • Issued: 05/09/2017
  • Est. Priority Date: 03/30/2010
  • Status: Active Grant
First Claim
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1. An electric household appliance comprising a low-voltage capacitive power supply connected to an electrical power network and designed to generate a low-voltage, wherein said low-voltage capacitive power supply comprises:

  • a user-operated control device that, when operated by a user, outputs a low-voltage enabling signal to change the electric household appliance from a standby mode to an operating mode; and

    a capacitive dividing circuit comprising;

    first and second input terminals connected to first and second power lines at first and second predetermined potentials, respectively;

    a first output terminal adapted to provide the low-voltage enabling signal to an input of the user-operated control device;

    a second output terminal connected to the second input terminal such that power supplied to the second input terminal is supplied to the second output terminal;

    first and second charge-accumulating means connected between said first and second input terminals;

    a third charge-accumulating means connected between said first output terminal and said second output terminal; and

    at least one voltage limiter connected parallel to said second charge-accumulating means and designed to switch from a nonconducting to a conducting state when subjected to a voltage above a predetermined breakdown voltage;

    wherein said first and second charge-accumulating means are designed such that the voltage at terminals of said second charge-accumulating means is below said predetermined breakdown voltage.

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