Metal vapor discharge lamp having starter therein

Details Metal vapor discharge lamp having starter therein Metal vapor discharge lamp having starter therein

1988-08-18

1990-01-30

Mis, David

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Electric switch inside evacuated or gas filled envelope

315 47, 315240, H05B 4114, H01J 744, H01J 1734

Patent

active

048975761

ABSTRACT:
In parallel connecting a starter to a luminous tube, the starter being formed by a coiled nonfusible metal wire which is wound to or laid along the outer wall of the luminous tube and a nonlinear capacitor which is in series connected to the nonfusible metal wire. As a result of this, the discharge lamp can be assuredly and stably lit with a small size ballast. Furthermore, pass of large current through the starter can be prevented even if the luminous tube is leaked. Furthermore, if the vacuum outer bulb is leaked or broken, the circuit of the starter can be opened by melting the nonfusible metal wire.

REFERENCES:
patent: 4520294 (1985-05-01), Iida et al.
patent: 4780649 (1988-10-01), Scholz et al.

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