Abstract: A recessed lighting fixture providing illumination from a light source comprising a plurality of light emitting diodes (LEDs) placed within a cavity of a planar surface, such as a ceiling, wall, or shower. The fixture comprises a baffle integrated with a low profile heat sink that is used to draw heat out of the fixture and communicate that heat to a trim ring of the fixture for dissipation of the heat in the room so that higher intensity light sources can be used. Improved grounding of the recessed trim unit to the recessed housing is provided with combination support and grounding springs. One embodiment of the light source is fixed in position while a second embodiment is gimbal mounted for aiming the light produced by the fixture.

Abstract: There is disclosed a germicidal treatment system having a status indicator. The germicidal treatment system comprises at least one mounting assembly attachable to an outside of a wall of an air handling apparatus. Each of the mounting assemblies includes a germicidal lamp and a ballast. The germicidal lamp is coupled to the ballast. The germicidal treatment system includes a power cord to receive electrical power and to provide electrical power to the ballast. A status indicator to indicate the functioning status of the germicidal treatment system.

Abstract: An electronic high frequency supply, such as lamp ballast, includes a double rectifier, two storage Capacitors in series, and an isolating inductor between rectifier and an AC input. Each storage capacitor is charged to a voltage greater than peak of the AC input. An inverter is connected to the storage capacitors, and has a high frequency inductive load circuit connected between inverter output and a junction between the isolating inductor and double rectifier. A capacitor, connected from the junction to the junction of two storage capacitors, forms a high frequency resonance circuit with the inductive load circuit. Current is drawn from the input AC only as a series of pulses at the inverter frequency. The isolating inductor filters out the high frequency part of the current pulse and makes the input current near sine wave.

Abstract: An electronic high frequency supply, such as lamp ballast, includes a double rectifier, two storage Capacitors in series, and an isolating inductor between rectifier and an AC input. Each storage capacitor is charged to a voltage greater than peak of the AC input. An inverter is connected to the storage capacitors, and has a high frequency inductive load circuit connected between inverter output and a junction between the isolating inductor and double rectifier. A capacitor, connected from the junction to the junction of two storage capacitors, forms a high frequency resonance circuit with the inductive load circuit. Current is drawn from the input AC only as a series of pulses at the inverter frequency. The isolating inductor filters out the high frequency part of the current pulse and makes the input current near sine wave.

Abstract: There is disclosed a germicidal treatment system having a status indicator. The germicidal treatment system comprises at least one mounting assembly attachable to an outside of a wall of an air handling apparatus. Each of the mounting assemblies includes a germicidal lamp and a ballast. The germicidal lamp is coupled to the ballast. The germicidal treatment system includes a power cord to receive electrical power and to provide electrical power to the ballast. A status indicator to indicate the functioning status of the germicidal treatment system.

Abstract: There is disclosed a multi-lamp germicidal treatment system with interlock. The multi-lamp germicidal treatment system includes two or more mounting assemblies, one of which is coupled to a power source. The mounting assemblies are adjustably coupled to one another. A germicidal lamp may be coupled to each of the mounting assemblies. Power is only provided to each of the germicidal lamps when all of the mounting assemblies have a germicidal lamp coupled therein.

Abstract: A (vibration) stopper protection circuit of an electronic ballast for fluorescent lamps. The electronic ballast has an inverter to convert a direct current source into a square-wave source, and to provide the square-wave source to multiple lamp tubes. The stopper protection circuit has several harmonic oscillating capacitors, a sampling transformer, a protection signal processing circuit and a stopper circuit. The sampling transformer samples a normal sampling signal and an error sampling signal when the lamp tubes are normal or out of order, respectively. The protection signal processing circuit outputs an error signal while receiving the error signal. While receiving the error signal, the stopper circuit outputs a stop signal to the inverter, so that the inverter stops operating.