Discharging method and small fluorescent lamp using the discharg

Details Discharging method and small fluorescent lamp using the discharg Discharging method and small fluorescent lamp using the discharg

1990-09-24

1992-04-21

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315 71, 315 94, 315101, 315DIG1, 315330, 315335, 313631, 313632, H05B 4114, H01J 1734

Patent

active

051071835

ABSTRACT:
A charging method within a glass tube using a direct current of low voltage is provided in order to obtain a small fluorescent lamp with a light emission of high luminance. Two distinct discharges are achieved through use of one negative electrode. The filament-like negative electrode is arranged at a short spaced relation to a positive electrode at one end of the glass tube and upon application of the direct current voltage becomes the preliminary discharge. A second positive electrode is positioned at the opposite end of the glass tube and has a greater-spaced relation to the negative electrode resulting in the second discharge.

REFERENCES:
patent: 3611024 (1971-10-01), Nakatsu et al.
patent: 4739227 (1988-04-01), Anderson
patent: 4902933 (1990-02-01), Roberts

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