{
  "$type": "site.standard.document",
  "description": "The present invention discloses an uninterrupted power supply circuit and a method for controlling the same, and pertains to the communications field. The circuit includes an alternating current input module, a positive Boost boost module, a negative Boost boost module, a battery, a first switch…",
  "path": "/patents/977404",
  "publishedAt": "2014-03-19T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J4/25",
    "HUAWEI TECH CO LTD [CN]"
  ],
  "textContent": "The present invention discloses an uninterrupted power supply circuit and a method for controlling the same, and pertains to the communications field. The circuit includes an alternating current input module, a positive Boost boost module, a negative Boost boost module, a battery, a first switch transistor, a second switch transistor, and a first thyristor, where a collector of the first switch transistor is electrically connected to a cathode of a first diode in the positive Boost boost module and one end of a first output filter capacitor in the positive Boost boost module, and an emitter of the first switch transistor is electrically connected to one end of a second inductor in the negative Boost boost module and a cathode of the battery; an anode of the first thyristor is electrically connected to the other end of the second inductor in the negative Boost boost module, a cathode of a second diode in the negative Boost boost module, and an emitter of a fourth switch transistor in the negative Boost boost module, and a cathode of the first thyristor is electrically connected to an anode of the battery. The present invention is capable of simplifying the structure of the UPS circuit and improving the overall circuit efficiency.",
  "title": "UNINTERRUPTED POWER SUPPLY CIRCUIT AND CONTROL METHOD THEREFOR"
}