| 摘要 |
The invention relates to a method for the independent control of individual or a group of fluorescent lamps of a lighting system operated by the a.c. supply system with the main functions of rapid start, brightness control (dimming), extinction and storage of an operating state for switching on the system after it has been switched off. A feature of the invention resides in the possibility of converting existing conventional lighting systems without additional installation costs merely by exchanging the respective conventional starter for a control circuit according to the invention and by exchanging the conventional light switch for transducers according to the invention. To achieve this, a control element instead of the known starter is connected into the heating circuit for a lamp formed from a series circuit of a fluorescent tube with a ballast device. The control element consists at least of the components of power switch, phase detector, power supply, signal processor, clock generation means and control software deposited in the non-volatile memory and generating the control signals of the power switch among other things from the information of the phase detector. |
