Starting and operating LV fluorescent lamp(s) - using electronic unit supplying pulses to control main load switch and starter for switching within each voltage cycle

An electronic unit (1) controls the illumination of a bank of fluorescent tubes (14) by sending pulse signals to the main load current switch (2), the starters (4) and switches determining series or parallel connection (3). For each voltage cycle, the electronic unit sends pulses first to close the...

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Bibliographic Details
Main Authors LOEWE, ANDREAS, O-3011 MAGDEBURG, DE, SIEGEL, HEINZ, O-3031 MAGDEBURG, DE
Format Patent
LanguageEnglish
German
Published 25.06.1992
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:An electronic unit (1) controls the illumination of a bank of fluorescent tubes (14) by sending pulse signals to the main load current switch (2), the starters (4) and switches determining series or parallel connection (3). For each voltage cycle, the electronic unit sends pulses first to close the main switch, then to the series/parallel switch, then to the starters, and finally to the main switch to open it again at the zero-crossing of the voltage waveform. USE/ADVANTAGE - Controlling illumination of fluorescent lamps by adjustable switching within a cycle; definitive control avoids misfiring, promotes tube life and saves energy.
Bibliography:Application Number: DE19904041958