Electric lamp and discharge devices: systems – Plural series connected load devices – Periodic switch in the supply circuit
Patent
1994-04-22
1995-09-19
Lee, Benny
Electric lamp and discharge devices: systems
Plural series connected load devices
Periodic switch in the supply circuit
315240, 315209R, 315291, 315324, 315DIG4, H05B 3700
Patent
active
054518431
ABSTRACT:
A lighting fixture has a lamp and a housing for a lamp ballast. In the new fixture for providing bilevel illumination, the housing also contains a control device comprised of a dual capacitor and a "random crossing" relay connected to the capacitor. A single electrical control wire is attached to the relay and extends from the housing to a control module for remotely controlling the level of illumination consumed by the fixture. In a system employing one or more of the new fixtures, the level of illumination provided by each fixture is controlled by applying a signal to the control wire and switching the relay independently of the instantaneous value of the voltage across the relay terminals. A new method for providing two levels of power to the fixtures (and, thus, two levels of illumination) is also disclosed.
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Kahn Michael J.
Kohanski Bernard
Lee Benny
Philogene Haissa
Ruud Lighting, Inc.
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