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. 18, 2008
Filed:
Feb. 04, 2005
Akira Takahashi, Osaka, JP;
Masayoshi Gyoten, Shiga, JP;
Akira Takahashi, Osaka, JP;
Masayoshi Gyoten, Shiga, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The present invention aims to provide an inrush current limiting resistor for suppressing inrush current, and to avoid an excessive current flowing through the inrush current limiting resistor even if the lamp is operated at a dimmed level by mistake. A compact self-ballasted fluorescent lampis composed of a holderand a caseattached to each other. The casehouses therein a lighting unitfor operating an arc tube. The lighting unitis composed of a rectifier/smoothing circuit module having an electrolytic capacitor, an inverter circuit module, and a resonant circuit module having a resonance capacitor. The circuit modules are mounted on a printed wiring board. An inrush current limiting resistoris connected to the input end of the rectifier/smoothing circuit module and in contact with the electrolytic capacitorand the resonance capacitorat their outer circumferential surfaces.