{
  "$type": "site.standard.document",
  "description": "A power transmission device which can increase a frequency change width (frequency dispersion region) while curbing output fluctuations. The power transmission device that wirelessly transmits power to a power receiving device includes an inverter configured to convert a voltage into an alternating…",
  "path": "/patents/1272907",
  "publishedAt": "2020-09-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/12",
    "TDK CORPORATION"
  ],
  "textContent": "A power transmission device which can increase a frequency change width (frequency dispersion region) while curbing output fluctuations. The power transmission device that wirelessly transmits power to a power receiving device includes an inverter configured to convert a voltage into an alternating current voltage with a drive frequency, a power supply configured to generate the voltage to be supplied to the inverter, a power transmission coil configured to be supplied with the alternating current voltage and generate an alternating current magnetic field, and a voltage changing unit configured to spontaneously change an output voltage of the power supply, wherein the inverter is configured to control the drive frequency in response to a change in the output voltage.",
  "title": "POWER TRANSMISSION DEVICE AND WIRELESS POWER TRANSMISSION SYSTEM"
}