摘要:
Power line communication (PLC) systems are presented for connecting dimming switches with electronic ballasts for driving compact fluorescent lamps and other applications using a power distribution network, including a transmitter and a receiver connected in a series circuit for transmission of multi-bit data, where the receiver has a load control circuit for selectively adjusting the receiver loading and to sense current interruptions to provide a data output.
摘要:
Power line communication (PLC) systems are presented for connecting dimming switches with electronic ballasts for driving compact fluorescent lamps and other applications using a power distribution network, including a transmitter and a receiver connected in a series circuit for transmission of multi-bit data, where the receiver has a load control circuit for selectively adjusting the receiver loading and to sense current interruptions to provide a data output.
摘要:
Disclosed herein are mercury free ceramic metal halide high intensity discharge lamps of specified arc tube geometry and composition of ionizable fill. Embodiments herein generally employ a discharge vessel formed of a ceramic material having an aspect ratio satisfied by 1
摘要:
A dielectric barrier discharge (DBD) lamp is disclosed. The DBD lamp comprises a discharge vessel, which encloses a discharge volume filled with discharge gas. The discharge vessel further comprises a phosphor layer within the discharge volume. The discharge vessel comprises an outer tubular portion having an internal surface, and an inner tubular portion having an outward surface. The outer tubular portion surrounds the inner tubular portion. In this manner, a substantially annular discharge volume is enclosed between the outer tubular portion and the inner tubular portion. The inner tubular portion comprises a multitude of protrusions around its circumference. The protrusions extend into the substantially annular discharge volume. A first set of interconnected electrodes and a second set of interconnected electrodes are also provided. The electrodes are isolated from the discharge volume by at least one dielectric layer, and at least one of the dielectric layers is constituted by the wall of the inner tubular portion.
摘要:
The present subject matter is directed to a lighting control system and method. Motion or occupancy sensors are used to determine when a lighting fixture and/or a nearby lighting fixture should be activated. A controller associated with each lighting fixture switches its lighting fixture on and triggers a communications circuit to generate and send a signal to nearby lighting fixtures when a user is detected. Each lighting fixture also has a signal receiver to receive signals from any nearby lighting fixtures that are configured to communicate with it via a communication circuit. The present subject matter allows for a significant amount of energy to be saved as remote areas away from an occupied area do not have to be illuminated. Meanwhile, the user is still provided with a comfortable level of lighting in and near the occupied area.
摘要:
Disclosed herein are mercury free ceramic metal halide high intensity discharge lamps of specified arc tube geometry and composition of ionizable fill. Embodiments herein generally employ a discharge vessel formed of a ceramic material having an aspect ratio satisfied by 1