Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Plural load device systems
Patent
1975-05-08
1977-10-11
La Roche, Eugene R.
Electric lamp and discharge devices: systems
With cathode or cathode heater supply circuit
Plural load device systems
315250, 315312, 315324, 315363, 362221, H05B 4116, H05B 4146, H01C 102
Patent
active
040538117
ABSTRACT:
A non-light emitting insert for a fluorescent lighting fixture is used in place of a fluorescent lamp to complete a plural lamp ballast circuit so that the ballast is effective to illuminate properly any remaining fluorescent lamp coupled therein. The insert appears externally as a conventional fluorescent lamp including end electrical terminations that fit in the sockets of a fluorescent lighting fixture, and to an extent the insert duplicates the electrical effect of a lamp in a two lamp ballast circuit. Using the insert a reduction in the light output and a substantially corresponding reduction in consumed electrical power are achieved for a plural lamp fluorescent lighting fixture arrangement while at the same time the components of the ballast circuit are operated at reasonably normal electrical and temperature levels.
REFERENCES:
patent: 774812 (1904-11-01), Wurts
patent: 1617636 (1927-02-01), Heany
patent: 1963366 (1934-06-01), Hill
patent: 2774917 (1956-12-01), Passmore
patent: 3956665 (1976-05-01), Westphal
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