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JPH0446397U |
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JPH0443898U |
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JPH04112491A |
PURPOSE: To certainly stop a circuit operation in the case of abnormal energization so as to prevent any erroneous operation of a timer circuit by connecting, to the timer circuit, a capacitor arranged in parallel to a lamp so as to coun...
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JPH0494097A |
PURPOSE: To turn on a halogen lamp without reclosing the switch to carry AC by installing a reset switch in a protection circuit. CONSTITUTION: At an inverter for a halogen lamp having a protection circuit which is equipped with a paper ...
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JPH0494096A |
PURPOSE: To avoid the going out of all the lamps in a series connection when a lamp or some lamps are not turned on, by connecting a switching circuit, made up of a turn-on circuit and a thyrister circuit, in parallel to each of series i...
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JPH0412636Y2 |
A dimming circuit adjusts the light output of a lamp by controlling the current flow in the lamp that is connected to a transistor, through turning on and off the transistor with a predetermined timing which is changed by the control sig...
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JPH0479195A |
PURPOSE: To change the brightness of an incandescent lamp for low voltage smoothly and prevent the heat generation and the breakage of a transformer by adding a timing compensation circuit which controls a generation timing of a TRIAC dr...
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JPH0424257U |
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JPH0423096U |
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JPH048913B2 |
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JPH0448592A |
PURPOSE: To adjust lighting without rush current flowing to a light adjusting apparatus and causing flicker by giving a controlling signal to a controlling part installed in a lighting apparatus from the light adjusting apparatus. CONSTI...
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JPH0448590A |
PURPOSE: To safely exchange a lamp and at the same time move to normal lighting without shutting electric power source one and re-starting after the lamp exchange by detecting voltage or current at the time of an incandescent lamp settin...
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JPH048914B2 |
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JPH046249B2 |
A relay driver circuit, suitable for controlling a bistable relay, includes a storage device which is charged to a first voltage level by a low current flow voltage source. A first switching circuit couples the storage device to the bist...
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JPH0410997U |
Disclosed herein is a halogen-lamp illumination/control circuit which includes a switching circuit unit for applying an a.c. power to the halogen lamp each time a firing pulse is received, a zero-crossing detection unit for detecting the...
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JPH048454U |
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JPH048162A |
PURPOSE: To select a capacitive LC constant and to avoid turn-off phenomenon under light load by regulating the capacitance of a noise filter according to the variation of load current value. CONSTITUTION: A detecting section 1 detects t...
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JPH03291895A |
PURPOSE: To suppress an excessive flow of lamp load without connecting a large size of parallel element by continuing a thyrister in a specific time by the phase control to feed a specific power to an AC load when an operation switch is ...
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JPH03505962A |
Procedure and apparatus for the control of electric power, by which procedure the electric power supplied to a load is regulated by means of a regulator, e.g. a thyristor regulator. The regulator control signals, e.g. thyristor firing pu...
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JPH03285289A |
PURPOSE: To prevent flickering of a fluorescent lamp and dim light over a wide range by connecting a dummy resistance in parallel to a condensor when a phase-controlled voltage rectified by a rectifier is smaller than a predetermined ref...
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JPH03280399A |
PURPOSE: To prevent destruction of output part of a bipolar logical circuit by turning on an NPN transistor before the logical circuit is operated, and thereby relieving the rush current into the logical circuit. CONSTITUTION: When a hig...
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JPH03272509A |
PURPOSE: To embody an illumination fixture in a simple structure and decrease the number of parts used without imposing burden on a lightweight mirror by supporting a lamp holder by an electricity feeder mounted on the base, and supplyin...
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JPH03272508A |
PURPOSE: To prevent impairing the fine appearance of a plastic mirror by pinching a part of the plastic mirror with a pair of pinching members, connecting it to a support, and achieving a lightweight construction with this plastic mirror...
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JPH03272597A |
PURPOSE: To prevent dangers in a lighting fixture even if a short circuit occurs between feeders each having no insulating-coat by supplying low-voltage power to the feeders, and lowering the level of an output or stopping the output whe...
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JPH03272510A |
PURPOSE: To vary the light projecting direction easily and simplify the configuration by feeding electricity to a light source using a conductive arm, and supporting a lightweight mirror rotatably around a casing. CONSTITUTION: A casing ...
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JPH0353574Y2 |
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JPH03256407A |
PURPOSE: To rapidly and safely drive an incandescent lamp at the time of start by selecting such two current limit values as to trace the boundary of a safe operation area (SOA) of a power transistor characteristic at the time of turning...
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JPH03101898U |
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JPH03100398U |
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JPH03201393A |
PURPOSE: To reduce stress on circuit elements so as to prolong the life of an incandescent lamp by operating a high-frequency inverter during a period including the first transition of a full wave rectifying voltage wave form after a zer...
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JPH0341440Y2 |
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JPH03186440A |
PURPOSE: To ensure safety driving despite breaking of a bulb by detecting a circuit for its cutoff due to generation of breaking in the main bulb and selecting it to a spare bulb in a spare circuit while lighting a display part to displa...
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JPH0369551U |
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JPH03141589A |
PURPOSE: To detect over load condition at a terminal period of a lamp or during lighting when excessive current runs so as to protect a device from breaking and prevent error operation owing to rush current at the initial stage of electr...
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JPH03141590A |
PURPOSE: To detect over load condition at a terminal period of a lamp or during lighting when excessive current runs so as to protect a device from breaking and prevent error operation owing to rush current at the initial stage of electr...
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JPH0350985U |
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JPH0321036Y2 |
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JPH0319818Y2 |
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JPH0319196Y2 |
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JPH0395813A |
PURPOSE: To provide a control device capable of continuously controlling light, having high durability and high reliability by arranging a cover plate having a flexible region, a touch type means responding to pressure to the flexible re...
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JPH03501791A |
A mounting assembly for a light bulb includes a soft start-up circuit as well as a DC-to-AC converter in order to prolong bulb life. In addition, the mounting assembly includes a removable socket to facilitate changing the bulb. When the...
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JPH0388299A |
PURPOSE: To reduce a notching phenomenon on the filament of incandescent lamps even in a DC lighting system and lighten the life of the lamps by providing a current direction switching part which reverses the current direction of the inc...
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JPH0374149A |
PURPOSE: To regulate the power supply to a load at a level in a continuous range by providing a remote light control system for controlling the application of AC power to the load. CONSTITUTION: The power control system comprises a trans...
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JPH0359994A |
PURPOSE: To obtain a natural light optimum to a lighting of an excellent coloration with the color temperature about 2900K or more from an argon tube for a long period by applying a voltage exceeding the rating to the argon the to light....
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JPH0317193B2 |
A lamp control control circuit has triacs for controlling a current from an AC power supply and supplying a controlled current to lamps; a phase angle control unit for generating phase angle control pulses for a soft start; switching con...
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JPH0315439U |
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JPH036639B2 |
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JPH0250595B2 |
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JPH02260397A |
PURPOSE: To improve safety against accidental electric shock by providing a switch on a cover so as to make a lighting device and a high voltage generator discontinuous, and by providing a switch on a socket, too, so as to make the high ...
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JPH02242590A |
PURPOSE: To improve safety and reliability of a dimmer module by providing a cabinet having a circuit breaker, a power unit composed of a dimmer circuit, and a radiator mounted on the power unit so as to be thermally transmitted. CONSTIT...
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