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:
Apr. 03, 2007
Filed:
Feb. 21, 2006
Da-jing Hsu, Taipei, TW;
Da-Jing Hsu, Taipei, TW;
Niko Semiconductor Co., Ltd., , TW;
Abstract
The present invention provides an improved circuit utilizing a full-bridge inverter circuit controlled by a push-pull pulse width modulator, wherein the circuit of the invention utilizes an inverter circuit to control the electronic switches of the full-bridge inverter circuit. Thus, the push-pull pulse width modulator can control and drive the operations of the full-bridge inverter circuit. Two outputs of the push-pull pulse width modulator are connected to two inputs of the inverter circuit in order to produce four inverting signals controlling respectively four full-bridge electronic switches. The circuit of the present invention directly converts a direct current power to an alternate current power providing the energy source to cold cathode fluorescence lamps.