Switching power supply with function of micropower standby

Switching power supply with function of micropower standby

  • CN 101,013,859 B
  • Filed: 02/05/2006
  • Issued: 12/14/2011
  • Est. Priority Date: 02/05/2006
  • Status: Active Grant
First Claim
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1. on the electronic equipment civil power alternating current is converted to the low power consumption standby capacitive switch power supply of low-voltage DC, mainly forms, it is characterized in that by mains isolation power supply, capacitance decompression rectifying and wave-filtering standby power and readiness control circuit:

  • (1). during the equipment operate as normal, the mains isolation power supply provides the work of equipment main circuit required electric current;

    (2). when equipment entered holding state, readiness control circuit control insulating power supply quit work, and the standby task of equipment is finished by readiness control circuit fully;

    (3). capacitance decompression rectification filtering power;

    between an input terminal of terminal of mains supply and rectification circuit, only connect decompression capacitor, alternating voltage through after this electric capacity reduction provides operating current for readiness control circuit again after over commutation, filtering;

    (4). machine data is treated in exchange between readiness control circuit and the host circuit;

    (5). adopt the operating state of the controllable oscillatory circuit control readiness control circuit of two mutual inductors.

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