Low current vehicular adapter charger

  • US 6,150,796 A
  • Filed: 10/22/1999
  • Issued: 11/21/2000
  • Est. Priority Date: 10/22/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A battery charging arrangement comprising:

  • a supply power interface for receiving power from a mobile power source;

    a battery charging circuit for providing charge to a rechargeable portable battery;

    a controllable power switch electrically coupled to the supply power interface and to the battery charging circuit to selectively switch power from the mobile power source to the battery charging circuit; and

    a battery present detector, electrically coupled to the controllable power switch, for controlling the controllable power switch to selectively switch power from the mobile power source to the battery charging circuit based at least in part on whether the rechargeable portable battery is electrically coupled to the battery charging circuit for receiving a charge therefrom.

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