Circuit assembly for operating a fluorescent lamp

European Patent Office Patent

APP PUB NO EP-0471332-A1
SERIAL NO

91113563

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Abstract

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A circuit arrangement for operating a fluorescent lamp (1) on an AC network, for example on an aircraft electrical system, has a switch (8) which is located between the lamp electrodes (3, 4) and can be switched by means of a control circuit (9) closed switch (8) the lamp electrodes (3,4) are heated. In order to increase the service life of the fluorescent lamp (1), it is proposed to evaluate the positive temperature coefficient of the lamp electrodes (3, 4) to determine a preheating time and / or to increase the preheating current and / or to switch the switching time by means of a transformer (13, 14) move and / or switch off the fluorescent lamp (1).

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Patent Owner(s)

Patent OwnerAddress
DIEHL GMBH & CODESTEPHANSTRASSE 49 8500 NURNBERG

International Classification(s)

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Inventor(s)

Inventor Name Address
LUDWIG JUERGEN 50171 KERPEN
STOCKINGER GOTTFRIED BENZENDORF 8 W-8501 ECKENTAL W-8501 ECKENTAL

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