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:
May. 28, 2002
Filed:
Nov. 21, 2001
B. Mark Hirst, Boise, ID (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A DC power supply is disclosed. In one aspect, the DC power supply is a DC bias supply connectable to an AC source. The supply includes a first and second input node connectable to the AC source. A pump capacitor is provided having a first terminal coupled to the first input node and having a second terminal. A pump circuit is coupled between the second terminal of the pump capacitor and the second input node and having first and second output nodes. A storage capacitor is coupled between the output nodes, wherein during a first half-cycle of the AC source the pump circuit causes the pump capacitor accumulate a charge and during a second half-cycle of the AC source the pump circuit causes the pump capacitor to transfer to the storage capacitor the accumulated charge, thereby providing a rectified AC output voltage between the output nodes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile