{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
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  "description": "In an AC voltage detection circuit, a chopper charging circuit converts an induced voltage of an AC generator to a chopper voltage and charges a main capacitor. When the chopper voltage becomes a predetermined voltage or less, the chopper charging circuit charges an auxiliary capacitor and detects…",
  "path": "/patents/1113289",
  "publishedAt": "2001-05-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G04G19/02",
    "SEIKO EPSON CORP [JP]"
  ],
  "textContent": "In an AC voltage detection circuit, a chopper charging circuit converts an induced voltage of an AC generator to a chopper voltage and charges a main capacitor. When the chopper voltage becomes a predetermined voltage or less, the chopper charging circuit charges an auxiliary capacitor and detects a power generation state of the AC generator at an early stage based on a potential obtained by adding the potential between output terminals of the AC generator and the auxiliary capacitor and starts the charging.",
  "title": "AC voltage detection circuit and method, charging circuit and method, chopper circuit and chopping method, chopper charging circuit and method, electronic apparatus, and timepiece"
}