Invention Grant
- Patent Title: Method for operating fluorescent lamps and ballast
- Patent Title (中): 操作荧光灯和镇流器的方法
-
Application No.: US10643952Application Date: 2003-08-20
-
Publication No.: US06933682B2Publication Date: 2005-08-23
- Inventor: Markus Ziegler
- Applicant: Markus Ziegler
- Applicant Address: DE Munich
- Assignee: Patent Trauhand Gesellschaft fur elektrische Gluhlampen mbH
- Current Assignee: Patent Trauhand Gesellschaft fur elektrische Gluhlampen mbH
- Current Assignee Address: DE Munich
- Priority: DE10240807 20020830
- Main IPC: H05B41/298
- IPC: H05B41/298 ; H05B41/392 ; H05B37/02
Abstract:
The invention relates to an operating method for fluorescent lamps and a corresponding ballast, in which the brightness of the fluorescent lamps (LP) is set to the desired value by varying the switching frequency of the inverter switches (T1, T2). In order to prevent oscillations between different operating states in a critical dimming range, the power consumption of the fluorescent lamps (LP) is stabilized according to the invention by way of an additional control loop.
Public/Granted literature
- US20040051481A1 Method for operating fluorescent lamps and ballast Public/Granted day:2004-03-18
Information query
