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. 18, 1988
Filed:
Oct. 14, 1987
Applicant:
Inventor:
Robert C White, La Mesa, CA (US);
Assignee:
Sundstrand Corp., Rockford, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 65 ; 363 21 ; 363 97 ;
Abstract
A switch mode power supply is disclosed having a pair of switch mode power supply sections which are maintained precisely 180.degree. out of phase and precisely matched in duty cycle. The phase locking of the switch mode power supply sections produces an output voltage which is substantially free of harmonics which requires greatly reduced filtering. A phase lock loop is provided for controlling the phase and duty cycle between the first and second sections of the switch mode power supply.