{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreif263thxao2u5l2qyvxmwglzv7eoswnwcmefzenpt7zzfymp7c63m"
    },
    "mimeType": "image/png",
    "size": 104723
  },
  "description": "A power source includes rectifying means configured to rectify an alternating current (AC) voltage to be input, a first and second converter configured to convert the voltage rectified by the rectifying means, zero cross detection means configured to detect a zero cross of the AC voltage, voltage…",
  "path": "/patents/987728",
  "publishedAt": "2013-08-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R19/175",
    "CANON KK [JP]"
  ],
  "textContent": "A power source includes rectifying means configured to rectify an alternating current (AC) voltage to be input, a first and second converter configured to convert the voltage rectified by the rectifying means, zero cross detection means configured to detect a zero cross of the AC voltage, voltage detection means configured to detect the AC voltage, a first capacitance element connected across a potential after being subjected to rectification by the rectifying means and a ground, a first discharging resistor configured to discharge electric charges charged in the first capacitance element and first switch means configured to cut off a current flowing to the first discharging resistor and stopping means configured, in a case where the AC voltage is detected by the voltage detection means and the detected voltage is smaller than a threshold value, to stop the operation of the second converter.",
  "title": "Power source, power failure detection apparatus, and image forming apparatus"
}