High intensity discharge lamp containing electronic starting aid

Details High intensity discharge lamp containing electronic starting aid High intensity discharge lamp containing electronic starting aid

1980-03-19

1982-03-30

Chatmon, Jr., Saxfield

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Filament, electric heater, or resistance in shunt with the...

315 60, 315 74, 315100, 315DIG7, H01J 744, H01J 1734, H01J 1978, H01K 162

Patent

active

043226582

ABSTRACT:
A high intensity discharge lamp comprises a two-electrode arc tube and an external starting probe supported from a base and preferably sealed within an outer envelope to which the base is attached. The base contains an electronic pulsing circuit comprising a capacitor connected in a charging circuit across the base terminals, a pulse transformer having its primary connected in series with a voltage sensitive switch across the capacitor, and a step-up secondary connected to the probe. After starting, the voltage across the capacitor drops below the breakdown level of the switch and pulsing stops.

REFERENCES:
patent: 2266662 (1941-12-01), Spanner et al.
patent: 3666986 (1972-05-01), Lake et al.
patent: 3963958 (1976-06-01), Nuckolls
patent: 4064416 (1977-12-01), Krense et al.
patent: 4134042 (1979-01-01), VanHeemskerck
patent: 4223247 (1980-09-01), Jacobs et al.

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