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:
Mar. 21, 2017
Filed:
Jan. 21, 2014
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Abstract
A driving circuit includes a rectifying and smoothing circuit that rectifies an AC dimming signal, and a voltage conversion circuit including: a switching element having a source connected to a low-potential output terminal of the rectifying and smoothing circuit; a diode having an anode connected to a high-potential output terminal of the rectifying and smoothing circuit; an inductor disposed between the diode and a drain of the switching element; an oscillation controller; a capacitor that is charged by receiving magnetic energy from the inductor when the switching element is OFF, and discharges to a load when the switching element is ON; and a power control circuit that applies a voltage corresponding to a voltage at a high-potential terminal of the capacitor to the oscillation controller as a supply voltage for driving the oscillation controller.