Pilot lamp

Details Pilot lamp Pilot lamp

1986-07-03

1988-02-16

Moore, David K.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Plural circuit elements

315 53, 315306, 315307, 315200R, 323311, H05B 3700

Patent

active

047257598

ABSTRACT:
A conventional pilot lamp which is used in a power plant, substation, or other types of plants, each has its own large and heavy weight transformer below the lamp case. In order to obtain a pilot lamp having the same capacity as the conventional pilot lamp even if the transformer is taken away from the lamp case, the pilot lamp of this invention comprises a lamp, a lamp holder, a heat radiating plate fixed within the lamp holder, an extremely small-sized IC type AC-DC constant voltage regulator connected to the input terminal fixed to the lamp holder, and an output terminal connected to the lamp. Thus, the arrangement contemplated produces a pilot lamp having the same capacity as a conventional pilot lamp, without the large and heavy weight of the transformer unit below the lamp case.

REFERENCES:
patent: 3771018 (1973-11-01), Medendorp et al.
patent: 4211955 (1980-06-01), Ray
patent: 4290004 (1981-09-01), Smith

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