| 摘要 |
PROBLEM TO BE SOLVED: To provide a new fluorescent lamp ballast suitable for using an SCR lighting adjuster, and a fluorescent lamp in particular, a small fluorescent lamp, which obtains stepless light control and a stable light control effect using this ballast. SOLUTION: This is a fluorescent lamp that is capable of stepless light control by a normal SCR lighting adjuster and comprises a filter and a rectification circuit 1, DC high voltage stabilizing circuit 2, voltage signal detection and frequency control circuit 6, lamp load 4, lamp current feedback circuit 5, and voltage signal sampling circuit 3, and thereby, it changes the power factor and luminance according to variations in conduction phase angle of a silicon controlled rectifier. This lamp is most suitable for incorporation in a small fluorescent lamp by solving a problem of non-continuity and instability in the light control action. COPYRIGHT: (C)2009,JPO&INPIT |
