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:
Nov. 16, 1993
Filed:
Aug. 10, 1992
Stefan G Vingsbo, Houston, TX (US);
Powering, Inc., Houston, TX (US);
Abstract
A power converter has a resonant circuit composed of a serially connected inductor and capacitor. The resonant circuit is selectively connected to a DC voltage source, thereby establishing a charge cycle. The DC voltage source is normally derived from an AC voltage source by means of a rectifier and a filter capacitor. A second capacitor is selectively connected to the resonant circuit, thereby establishing a discharge cycle. The second capacitor is never connected with the resonant circuit simultaneously with the DC voltage source. The second capacitor serves as an output capacitor which maintains a substantially constant voltage. The second capacitor is connected to an external load. A control circuit synchronizes the charge transfers to the resonant frequency of the resonant circuit. The control circuit further measures the output voltage to determine if the second capacitor should be engaged in a discharge cycle in order to maintain its constant voltage. A regulated local power supply is provided to supply the control circuit with DC power. The DC power is derived from an AC voltage source. The local power supply is implemented in solid state.