Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Transformer in the supply circuit
Patent
1982-07-28
1985-02-19
Dixon, Harold
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Transformer in the supply circuit
315199, 315206, H05B 4116
Patent
active
045008132
ABSTRACT:
A lighting system (11) utilizes a high intensity quartz halogen bulb (12) surrounded by a spaced dome (18) to permit substantially spherical radiation of luminous energy for general area illumination. A control mechanism (41) responds to a remotely located manually operable switch (37) and includes a transformer (47) coupled to a power source (61) through a gatable triac (52) having a gate terminal (56) connected to the power source (61) through a series circuit (57) including a resistor (58), a diac (59) and a capacitor (60). The closure of the remotely located manual switch (37) activates the control mechanism (41) to gate the triac (52) into conduction to thereby energize the transformer (47) and the inter-connected high intensity quartz halogen bulb (12). An alternative embodiment provides three high intensity quartz halogen bulbs (71-73) connected in series circuit with a diode (77) to provide extremely high intensity light.
REFERENCES:
patent: 3028523 (1962-04-01), Seid
patent: 3361900 (1968-01-01), Berg et al.
patent: 3780328 (1973-12-01), Boddy et al.
patent: 3980921 (1976-09-01), Izawa
patent: 4163925 (1979-08-01), Gyursanszky
patent: 4338540 (1982-07-01), Sovilla
patent: 4367432 (1983-01-01), Glenny et al.
J.C. Penney Catalog, Fall and Winter 1981, pp. 837, 844, 845, 1155, Sears Catalog, 1977, p. 1134.
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