High pressure metal vapor discharge lamp

Details High pressure metal vapor discharge lamp High pressure metal vapor discharge lamp

1991-04-02

1992-08-11

Laroche, Eugene R.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Electric switch inside evacuated or gas filled envelope

315 59, 315240, 315290, 315243, H01J 744, H05B 3700, H05B 4114

Patent

active

051382318

ABSTRACT:
A high-pressure metal vapor discharge lamp comprises: an arc tube, which is shunted by a series circuit of a thermal switch and a nonlinear ceramic capacitor, a pyroelectric current bypassing resistor connected in parallel to the nonlinear ceramic capacitor, and a lamp outer bulb incorporating the arc tube, the thermal switch, the nonlinear ceramic capacitor and the resistor. Because of this construction, the nonlinear ceramic capacitor is prevented from early deterioration, thus lengthening the service life of the discharge lamp.

REFERENCES:
patent: 4277725 (1981-07-01), Sneiger
patent: 4447759 (1984-08-01), Moerkens et al.
patent: 4742275 (1988-05-01), Ito et al.
patent: 4807085 (1989-02-01), Yasukawa et al.
patent: 4897576 (1990-01-01), Iida et al.
patent: 4910437 (1990-03-01), Daniels
patent: 4959593 (1990-09-01), Joanino

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