Circuit arrangement for operating a gas-discharge lamp

Details Circuit arrangement for operating a gas-discharge lamp Circuit arrangement for operating a gas-discharge lamp

1992-02-21

1994-11-22

Pascal, Robert J.

Electric lamp and discharge devices: systems

Surge generator or inductance in the supply circuit

Circuit interrupter in the inductance circuit

315239, 315240, 315205, H05B 3700

Patent

active

053672275

ABSTRACT:
A circuit arrangement for operating a gas-discharge lamp is proposed, in which the high voltage for starting the gas-discharge lamp is generated by means of the energy stored in a transformer or capacitor. In order to obtain a steep rise in voltage of the starting voltage, the starting voltage is provided to the gas-discharge lamp via a voltage-controlled switch. A break-over diode, which has very short switching times, is proposed as the voltage-controlled switch. The starting circuit is switched off after starting. This circuit arrangement is also particularly suitable for starting gas-discharge lamps which are warm from operation. In consequence, it is particularly suitable for motor vehicle headlights.

REFERENCES:
patent: 4092565 (1978-05-01), Neal
patent: 4469981 (1984-09-01), Ruff et al.
patent: 4890041 (1988-03-01), Nuckolls et al.
patent: 5021716 (1991-06-01), Lesea

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