公开(公告)号：US20090033244A1

公开(公告)日：2009-02-05

申请号：US11833805

申请日：2007-08-03

Applicant: Gwo-Hwa Wang ,  Jea-Sen Lin ,  Ta-yung Yang

Inventor： Gwo-Hwa Wang ,  Jea-Sen Lin ,  Ta-yung Yang

IPC: H05B41/36

CPC classification number: H05B41/295

Abstract: The present invention provides a ballast with preheat function for fluorescent or compact fluorescent lamps. The lamp is connected in series with an inductor and a capacitor to form a resonant circuit. A first switch and a second switch controlled by control circuit are coupled to the resonant circuit for switching the resonant circuit. A RC circuit is composed of a first resistor and a second resistor connected in series to form a voltage divider, and a capacitor is connected in parallel with second resistor. Switching frequency is voltage dependent.

Abstract translation: 本发明提供一种具有用于荧光灯或紧凑型荧光灯的预热功能的镇流器。 灯与电感器和电容器串联连接以形成谐振电路。 由控制电路控制的第一开关和第二开关耦合到用于切换谐振电路的谐振电路。 RC电路由串联连接的第一电阻器和第二电阻器组成，形成分压器，电容器与第二电阻器并联连接。 开关频率取决于电压。