{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreignfqxjuxyi63abwfl3saisriw5xqsciwebxp3m7kgkgjydbguf7a"
    },
    "mimeType": "image/png",
    "size": 106214
  },
  "description": "An uninterruptible power supply comprising an input, an output, a plurality of battery modules that provide backup power, a power circuit coupled to the input, the plurality of battery modules and the output to provide power derived from the input and/or the backup power to the output, a…",
  "path": "/patents/1015980",
  "publishedAt": "2011-02-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J9/062",
    "AMERICAN POWER CONV CORP [US]"
  ],
  "textContent": "An uninterruptible power supply comprising an input, an output, a plurality of battery modules that provide backup power, a power circuit coupled to the input, the plurality of battery modules and the output to provide power derived from the input and/or the backup power to the output, a controller, a return line coupled to the controller and to each of the plurality of battery modules, and a first sense line coupled to the controller and to each of the plurality of battery modules, wherein each respective battery module is arranged to simultaneously provide a respective signal on a respective characteristic signal line that is coupled to the first sense line, and wherein the controller is configured to determine a numeric quantity of battery modules in the plurality of battery modules based on the respective signals detected by the controller on the first sense line.",
  "title": "METHOD AND APPARATUS FOR PROVIDING UNINTERRUPTIBLE POWER"
}