Abstract: An illumination lamp is provided which allows a user to perform brightness and color control in accordance with the state and purpose of use, the environment of use, or the tastes of the users, etc. The illumination lamp may include a rectifier configured to rectify a current supplied by a power supply; a ballast portion configured to start the lamp using the power rectified in the rectifier; a lamp portion that is connected to the ballast portion and that includes two or more tubes, each tube outputting light of a different color temperature; and a controller that is connected to the ballast portion, configured to control a brightness and color of light produced by the illumination lamp.

Abstract: A lighting administration device of the present invention has a main controller which converts a dimming signal from a remote controller into coded signals that are used to control a plurality of decoders. The decoders may be connected to the main controller in series, using a data line. A plurality of ballasts are connected to respective decoders in series. The decoders are each assigned an address, and each coded signal generated by the main controller bears the address of a corresponding decoder. The main controller may also have a timer function that causes the power to be shut off are a predetermined period of time elapses.

Abstract: An illumination lamp is provided which allows a user to perform brightness and color control in accordance with the state and purpose of use, the environment of use, or the tastes of the users, etc. The illumination lamp may include a rectifier configured to rectify a current supplied by a power supply; a ballast portion configured to start the lamp using the power rectified in the rectifier; a lamp portion that is connected to the ballast portion and that includes two or more tubes, each tube outputting light of a different color temperature; and a controller that is connected to the ballast portion, configured to control a brightness and color of light produced by the illumination lamp.

Abstract: A fluorescent light fixture that includes a lamp assembly having a circuit board therein where various components for the lamp's operation are provided; lamp fixing members for connecting the lamp by inserting them into both ends of the lamp assembly; an upper cover covering the top surface of the lamp assembly; a connector connected to the lamp fixing member through an installation groove at one end of the lamp assembly; and a coupler coupling a multiple connectors. Therefore, the lamp has an improved structure of the lamp assembly in order to allow the lamp itself to be replaced, and improved connections between the lamp assemblies.

Abstract: A circuit for protecting a fluorescent lamp from overload is disclosed, including a pulse voltage generator for generating a pulse voltage from a smoothed DC; a driver for accepting the pulse voltage from the pulse voltage generator, to drive the circuit; and an overpower prevention portion for preventing the fluorescent lamp from receiving overpower when the circuit is driven by the driver.

Abstract: A ferrite chip bead includes a ferrite substrate, a plurality of outer electrodes formed at opposite sides of the ferrite substrate, and a plurality of conductive leads each extending transversely through the ferrite substrate and having opposite ends protruded outwardly of opposite side surfaces of the ferrite substrate and connected to corresponding outer electrodes. Conductive leads are embedded in the ferrite substrate by introducing conductive leads in a central portion of a nozzle for extruding the ferrite substrate such that the conductive leads are embedded in the ferrite substrate being extruded, or by introducing conductive leads between ferrite substrate sheets being fed to be bonded together for forming the ferrite substrate such that the conductive leads are interposed between the ferrite substrate sheets being bonded. The ferrite chip has no tendency for outer electrodes to short-circuit from the ferrite substrate upon carrying the chip bead on a circuit board.

Abstract: A method for making a ferrite chip bead array in which a plurality of reinforcing outer electrodes are formed at the upper and lower surfaces of a ferrite substrate structure having a pair of substrate sheets and a plurality of uniformly spaced conductive leads interposed between the substrate sheets to enhance the bonding force between each electrode and each corresponding inner conductive lead, as well as the bonding force between each outer electrode and each corresponding inner conductive lead as well as the bonding force between each outer electrode and the ferrite substrate structure. The reinforcing outer electrodes eliminate a tendency for outer electrodes to short-circuit from the ferrite substrate upon placement of the chip bead array on a circuit board. The subject method simplifies manufacture and prevents short circuit, thereby enhancing reliability and productivity.