{
  "$type": "site.standard.document",
  "description": "A DC power system comprises a rectifier which converts AC power supplied from an AC power source in a station into DC power to supply the DC power to a DC load, and a storage device normally charged by the DC power output from the rectifier. The storage device is divided into a DC short-time…",
  "path": "/patents/1070676",
  "publishedAt": "2006-01-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J7/345",
    "TMT & D CORP [JP]"
  ],
  "textContent": "A DC power system comprises a rectifier which converts AC power supplied from an AC power source in a station into DC power to supply the DC power to a DC load, and a storage device normally charged by the DC power output from the rectifier. The storage device is divided into a DC short-time storage device 27 to maintain power supply only for a predetermined short time when power supply from the power source in the station is cut off, and a DC long-time storage device 37 to maintain power supply for a time relatively longer than that of the DC short-time storage device. The DC short-time storage device 27 comprises an electric double-layer capacitor having a predetermined high output density, and the DC long-time storage device comprises a second battery having a predetermined high storage power density.",
  "title": "DC POWER SUPPLY SYSTEM AND SWITCH"
}