Circuit arrangement

The invention relates to a circuit arrangement suitable for operating a low-pressure mercury discharge lamp by means of a high-frequency current, comprising circuitry (I) for generating the high-frequency current from a supply voltage, and a modulator (II) for the substantially square-wave modulatio...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KONINGS, LEONARDUS URBANUS EMILE, WESSELS, JOHANNES HENDRIK, SCHLEJEN, JACOB, BERGERVOET, JOZEF REINERUS MARIA, DE BIJL, ADRIANUS MARTINUS JOHANNES
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The invention relates to a circuit arrangement suitable for operating a low-pressure mercury discharge lamp by means of a high-frequency current, comprising circuitry (I) for generating the high-frequency current from a supply voltage, and a modulator (II) for the substantially square-wave modulation of the amplitude of the high-frequency current with a modulation frequency f. According to the invention, the circuit arrangement is further provided with circuitry (V) for limiting an amplitude of a re-ignition voltage across the low-pressure mercury discharge lamp to a voltage Vi. It is achieved by this that the interference with infrared systems caused by a lamp operated on the circuit arrangement is substantially fully suppressed.