The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2013
Filed:
Sep. 25, 2009
Qi Deng, San Ramon, CA (US);
Qi Deng, San Ramon, CA (US);
Other;
Abstract
A self-contained power source to charge a battery and/or power a load is provided. The power source does not utilize a connection to an external power supply, such as AC mains and/or an AC to DC converter. In one embodiment, the self-contained power source includes an ultra low voltage power generator, such as 0.3V of a single solar cell, or even lower to slightly above the GND potential, that provides a voltage to a rechargeable battery, a load or both. A voltage converter with boost topology is used to supply a voltage comparable to the voltage of the rechargeable battery. A first push circuit containing a zero threshold voltage switch, a MUX circuit and a one-pulse-control block is utilized to ensure initial and continued operation of the voltage converter.