×

Supercapacitor and Charger for Secondary Power

  • US 20090140575A1
  • Filed: 12/03/2007
  • Published: 06/04/2009
  • Est. Priority Date: 12/03/2007
  • Status: Active Grant
First Claim
Patent Images

1. A secondary power source system for a communication device, comprising:

  • a first unit configured to receive a primary power input and restrict a current used for charging to a predetermined amount;

    a second unit comprising a device that stores electrical energy, the second unit configured to receive a first output from the first unit with restricted current;

    a third unit configured to generate a second output of a certain voltage; and

    a fourth unit configured to perform a logical OR operation with the primary power input, first output from the first unit and second output from the second unit, and to generate a single third output of a certain voltage.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×