×

POWER FEEDING CIRCUIT

  • US 20110228429A1
  • Filed: 03/16/2011
  • Published: 09/22/2011
  • Est. Priority Date: 03/17/2010
  • Status: Active Grant
First Claim
Patent Images

1. A power feeding circuit comprising:

  • a battery;

    a load operated by receiving a normal current supply from the battery in a normal mode, and operated by receiving a dark current supply smaller than the normal current supply from the battery in a sleep mode; and

    a semiconductor switch interposed between the battery and the load,wherein the power feeding circuit further comprises;

    a first switch controlling member configured to turn the semiconductor switch on and supply the normal current to the load via the semiconductor switch in the normal mode, and to turn the semiconductor switch off in the sleep mode; and

    a bypass resistor connected in parallel to the semiconductor switch,wherein a resistance value of the bypass resister is so large as that the dark current is supplied to the load via the bypass resistor in the sleep mode, and if an electric wire downstream of the bypass resistor is short-circuited, an electric current more than a permissive current is prevented from flowing to the electric wire.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×