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Charge status indicator

  • US 5,633,592 A
  • Filed: 06/06/1995
  • Issued: 05/27/1997
  • Est. Priority Date: 12/12/1992
  • Status: Expired due to Fees
First Claim
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1. A circuit arrangement for indicating the charge status of a battery in an electrical appliance comprising:

  • a voltage comparator with hysteresis for detecting a battery voltage of the battery,an indicating device having a symbol printed thereon, the indicating device switched to an active condition when the voltage is above a first threshold voltage, the indicating device switched to a passive condition when the voltage is below a second threshold voltage with the absolute value of the first threshold voltage being greater than the absolute value of the second threshold voltage, the symbol being visible only when the indicating device is in the passive condition.

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