Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Pulsating or a.c. supply to the cathode or heater circuit
Patent
1996-05-17
1998-11-17
Pascal, Robert J.
Electric lamp and discharge devices: systems
With cathode or cathode heater supply circuit
Pulsating or a.c. supply to the cathode or heater circuit
315101, 315194, 315DIG5, 257121, H05B 3900
Patent
active
058381104
ABSTRACT:
A starter unit for a fluorescent tube includes in parallel across two terminals, first and second main thyristors head-to-tail connected and a zener protection diode. The gate of the first thyristor is connected to one of the terminals through a resistor and to the other terminal through the series connection of an auxiliary thyristor with a zener diode (Z). The gate of the auxiliary thyristor is connected to a control terminal of the integrated circuit. The cathode of the auxiliary thyristor is connected with a supply terminal of the integrated circuit and to a storing capacitor. The gate of the second thyristor is connected to a control terminal of the integrated circuit.
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Pascal Robert J.
Philogene Haissa
SGS-Thomson Microelectronics S.A.
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