{
  "$type": "site.standard.document",
  "description": "A device for controlling several ultrasonic piezo-electric drivers driven electronically from a control computer and a source of continuous voltage, incorporates an electronic system for driving some drivers fed by the continuous voltage source and delivers an alternating signal for exciting each…",
  "path": "/patents/1078054",
  "publishedAt": "2005-05-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/2096",
    "RENAULT SA [FR]"
  ],
  "textContent": "A device for controlling several ultrasonic piezo-electric drivers driven electronically from a control computer and a source of continuous voltage, incorporates an electronic system for driving some drivers fed by the continuous voltage source and delivers an alternating signal for exciting each driver selected by a controllable switch (S inj), mounted in series with the driver. It also includes a system for short circuiting each selected piezo-electric driver after the stoppage of the excitation signal, destined to dampen the free oscillations of the driver provoking an injection train.",
  "title": "Control unit for ultrasonic piezoelectric actuators"
}