Detection circuit and method, power down time-delay mechanism, the electrical equipment of power down delay circuit

Detection circuit and method, power down time-delay mechanism, the electrical equipment of power down delay circuit

  • CN 107,037,351 A
  • Filed: 12/15/2016
  • Published: 08/11/2017
  • Est. Priority Date: 12/15/2016
  • Status: Active Application
First Claim
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1. a kind of detection circuit of power down delay circuit, it is characterised in that the power down delay circuit is used to judge power supply power-failTime length, the power down delay circuit include delay capacitor, for the delay capacitor is charged charging module, be used forThe discharge module discharged the delay capacitor and detection port, the voltage of the detection port with the delay capacitor electricityThe increase of amount and increase, reduce with the reduction of the electricity of the delay capacitor;

  • Wherein, the detection circuit is automatically controlled including charge and dischargeMolding block and processing module;

    The charge and discharge control module is used to control the conducting and disconnection between the power supply and the power down delay circuit, to divideIt is other that the delay capacitor is charged and discharged;

    The processing module is used to control the power supply and institute by the charge and discharge control module in the non-power down of the power supplyConducting and disconnection between power down delay circuit are stated, and setting voltage is down to according to from the voltage up to the detection port of disconnectionWhen time judge the power down delay circuit whether there is failure.

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