Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Plural cathode and/or anode discharge device load
Patent
1976-04-13
1977-12-20
La Roche, Eugene R.
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Plural cathode and/or anode discharge device load
315 60, 315264, 315335, H01J 1734, H05B 4119
Patent
active
040644162
ABSTRACT:
The invention relates to a starting and operating device, including an intance in the ignition circuit, for a high pressure discharge lamp, especially for a high pressure mercury vapor discharge lamp with metal halide additive, having at least one starting electrode positioned near one of the main electrodes within the discharge vessel. The starting electrode and the main electrode remote from the starting electrode are bridged by an electric circuit externally of the discharge vessel which comprises a current-interrupting and/or current-limiting electrical component. This arrangement of an auxiliary electrode within the discharge vessel of a high pressure discharge lamp brings about a reduction of the supply voltage required for initiation of the discharge which is particularly desirous in the case of high pressure mercury vapor discharge lamps containing metal halides.
REFERENCES:
patent: 3226597 (1965-12-01), Green
patent: 3445721 (1969-05-01), Waymouth
patent: 3619710 (1971-11-01), Waymouth
Dobrusskin Alexander
Krense Horst
La Roche Eugene R.
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
Studebaker B. R.
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