Invention Grant
US08148947B2 Discharge state indicator 有权
放电状态指示灯

  • Patent Title: Discharge state indicator
  • Patent Title (中): 放电状态指示灯
  • Application No.: US12159260
    Application Date: 2006-12-09
  • Publication No.: US08148947B2
    Publication Date: 2012-04-03
  • Inventor: Torsten KlemmGerrit Rönneberg
  • Applicant: Torsten KlemmGerrit Rönneberg
  • Applicant Address: DE Kronberg
  • Assignee: Braun GmbH
  • Current Assignee: Braun GmbH
  • Current Assignee Address: DE Kronberg
  • Agent David K Mattheis; Kim W Zerby
  • Priority: DE102005063045 20051229
  • International Application: PCT/EP2006/011882 WO 20061209
  • International Announcement: WO2007/079868 WO 20070719
  • Main IPC: H02J7/00
  • IPC: H02J7/00
Discharge state indicator
Abstract:
A circuit for displaying the state of a battery that is almost discharged features a battery, an inductive load, and a controllable switch connected in series. The circuit also includes a display element connected in series with the inductive load and the battery. The controllable switch is opened when a voltage of the battery is lower than a first threshold level and is only closed again when the voltage of the battery is greater than a second threshold level. The circuit may also include a control circuit having a comparator which compares the voltage of the battery with the first threshold level and the second threshold level and triggers the controllable switch accordingly.
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