{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "The device has a resonance inductor (Lp) in series with a bridge of four switches (P11,P12,P21,P22) and connected parallel to two end terminals (B1,B2). Each switch is associated to a diode (d11,d12,d21,d22) for blocking a current path in one direction of charging of the inductor. The bridge has…",
  "path": "/patents/1082831",
  "publishedAt": "2004-10-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/2096",
    "RENAULT SA [FR]"
  ],
  "textContent": "The device has a resonance inductor (Lp) in series with a bridge of four switches (P11,P12,P21,P22) and connected parallel to two end terminals (B1,B2). Each switch is associated to a diode (d11,d12,d21,d22) for blocking a current path in one direction of charging of the inductor. The bridge has two arms, each having two switches in series and a middle point connected to a piezo-electric actuator (Ai). An independent claim is also included for a method of implementing a device for controlling an ultrasonic piezo-electric actuator.",
  "title": "Control device for a piezoelectric ultrasonic actuator and method of operation"
}