Starter for low-pressure discharge lamps

Details Starter for low-pressure discharge lamps Starter for low-pressure discharge lamps

2006-02-06

2009-06-02

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Electric switch in the supply circuit

C315S100000, C315S2090SC

Reexamination Certificate

active

07541753

ABSTRACT:
Disclosed is a starter for AC-fed low-pressure discharge lamps that are operated on a series inductor. The starter comprises a glow fuse, a high-temperature conductor (NTC resistor) that is serially connected to the glow fuse, and a resetting bimetal switch which is serially connected to the glow fuse and the high-temperature conductor and is in thermal contact therewith. The high-temperature conductor is provided with high resistance in a cold state, which is transformed into low resistance by elements of built-up heat while the bimetal switch interrupts the electrode heating circuit when the low-pressure discharge lamp fails to ignite. According to the invention, the current is conducted via the high-temperature conductor for both igniting the low-pressure discharge lamp and switching off when the discharge lamp fails to ignite.

REFERENCES:
patent: 23 21 212 (1974-11-01), None
patent: 24 52 417 (1976-05-01), None
patent: 91 04 136 (1991-06-01), None
patent: 2 100 135 (1972-03-01), None

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