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:
Oct. 08, 1996
Filed:
Nov. 10, 1994
Applicant:
Inventors:
Dao-Long Chen, Fort Collins, CO (US);
Daniel L Ellsworth, Fort Collins, CO (US);
Assignees:
AT&T Global Information Solutions Company, Dayton, OH (US);
Hyundai Electronics America, San Jose, CA (US);
Symbios Logic Inc., Fort Collins, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363146 ; 363147 ;
Abstract
An AC-DC voltage conversion integrate circuit that integrates all the control and protection circuits, as well as the power transistors, into a single module. Passive components, such as the transformer and capacitors, are very small, as the switching frequency is in the KHz or MHz range. Including one or more integrated switched mode power supply ICs in every wall outlet allows for providing a plurality of DC voltages from such outlets.