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:
Jul. 12, 1988
Filed:
Dec. 12, 1983
Applicant:
Inventor:
Donald J Hancock, Thousand Oaks, CA (US);
Assignee:
Hughes Aircraft Company, Los Angeles, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 17 ; 363 98 ;
Abstract
Current flow in a transistorized series resonant inverter is switched in an inherently simple and stable manner by time integrating the difference between the electrical output and a reference and varying the switching frequency of the inverter so as to null the time integrated difference in a feedback control loop. Each transistor is on for about half the resonant period of the tank circuit so that it is cut off at or slightly after the zero-crossing of the sinusoidal collector current.