{
  "$type": "site.standard.document",
  "description": "A power transmitter () comprises a driver () generating a drive signal for an output resonance circuit comprising transmitter coil () generating a power transfer signal. A resonance detector () determines a coupled resonance frequency for the output resonance circuit during where the coupled…",
  "path": "/patents/1359464",
  "publishedAt": "2024-02-15T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/12",
    "KONINKLIJKE PHILIPS N.V."
  ],
  "textContent": "A power transmitter () comprises a driver () generating a drive signal for an output resonance circuit comprising transmitter coil () generating a power transfer signal. A resonance detector () determines a coupled resonance frequency for the output resonance circuit during where the coupled resonance frequency is a resonance frequency for the output resonance circuit for the transmitter coil () being coupled to a receiver coil () which is part of a power transfer input resonance circuit of the power receiver (). The input resonance circuit has a quality factor of no less than ten. An estimation circuit () determines a coupling factor estimate for the coupling between the transmitter coil () and the receiver coil () in response to a non-coupled resonance frequency of the output resonance circuit and the first effective resonance frequency. An adapter () sets an operating parameter in response to the coupling factor estimate.",
  "title": "WIRELESS POWER TRANSFER"
}