Electric device for starting and feeding a metal vapor discharge

Details Electric device for starting and feeding a metal vapor discharge Electric device for starting and feeding a metal vapor discharge

1979-01-22

1981-03-17

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Pulsating or a.c. supply to the cathode or heater circuit

315105, 315174, 315176, 315219, 315226, 315DIG7, H05B 4129

Patent

active

042569923

ABSTRACT:
An arrangement for starting and operating a low-pressure mercury vapor discharge lamp provided with preheatable electrodes. The lamp is supplied from a battery via two direct-to-alternating current converters connected between the battery and the lamp. One converter is a voltage-controlled converter which exclusively effects the preheating of the electrodes, whereas the other converter supplies the lamp current only. This arrangement provides reliable ignition and operation of the lamp even in the case of a large variation in the battery voltage.

REFERENCES:
patent: 2586403 (1952-02-01), Waguet
patent: 3818312 (1974-06-01), Luursema et al.

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