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:
Sep. 04, 2001
Filed:
Dec. 03, 1999
Shinichiro Kataoka, Ibaraki, JP;
Yo Nakagawa, Suita, JP;
Masanori Yamanaka, Takatsuki, JP;
Hiroki Matsunaga, Takatsuki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A fluorescent lamp lighting apparatus in accordance with the present invention has first switching means (M,) driven by a high-voltage-side pulse signal input from a drive-signal generation circuit and second switching means (M,) driven by a low-voltage-side pulse signal input from the drive-signal generation circuit, wherein the first switching means (M,) is connected in series with the second switching means (M,), and a first capacitor (C,) and an inductance element (L,) and the above-mentioned second switching means (M,) are provided between the high-voltage-side terminals of a pair of filament electrodes of a light-emitting tube (,), whereby a constant luminous flux can be maintained immediately after lighting.