{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "A non-contact power transmission apparatus comprises a resonant circuit (10), which includes switching elements (FETs 1, 2, 3, 4) and a primary coil (L1) electrically connected to the switching elements. The resonant circuit (10) induces an alternating power, which is in accordance with the…",
  "path": "/patents/997720",
  "publishedAt": "2012-10-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/005",
    "PANASONIC CORP [JP]"
  ],
  "textContent": "A non-contact power transmission apparatus comprises a resonant circuit (10), which includes switching elements (FETs 1, 2, 3, 4) and a primary coil (L1) electrically connected to the switching elements. The resonant circuit (10) induces an alternating power, which is in accordance with the resistance value of the resonant circuit (10), in the primary coil through the switchings of the switching elements. The non-contact power transmission apparatus further comprises a secondary coil (L2) that receives, from the primary coil in a non-contact manner, the alternating power at a position that intersects with an alternating magnetic flux occurring at the primary coil. A primary side control device (13) performs ON/OFF controls of the switching elements and further changes, based on information to be conveyed to the secondary coil, the resistance value of the resonant circuit (10), thereby modulating the amplitude of the alternating power induced in the primary coil. A secondary side control device (24) demodulates, from the change in the amplitude of the alternating power received by the secondary coil, the information conveyed to the secondary coil.",
  "title": "NON-CONTACT POWER TRANSMISSION APPARATUS"
}