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JPH10188609A |
To prevent overheating of a lighting lamp and prevent a fire caused by the overheat of the lamp by turning off the lamp when a fixed time elapses while the dust quantity sensed via a dust sensing sensor is kept at a prescribed value or b...
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JP2770337B2 |
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JPH10506729A |
A low voltage power control circuit supplies substantially equal voltages to a plurality of loads distributed along a pair of parallel wires. Moreover, the voltage delivered is automatically controlled by a feedback control circuit, so t...
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JP2767844B2 |
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JP2763125B2 |
Circuit arrangement for deriving a direct voltage from an alternating voltage, particularly the mains alternating voltage, said circuit arrangement comprising: a switching transistor (T1) whose main current path is connected via a rectif...
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JPH10134969A |
To prevent illumination intensity of an irradiated surface from being shifted from a substantially constant value, and enhance operating performance under a lighting while both the difference in illumination intensity of the irradiated s...
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JPH10133504A |
To dispense with a full wave rectifier in the power source circuit of a lamp and to obtain a rush current suppressing function capable of sufficiently suppressing the malfunction of an image forming device body and a disturbed noise with...
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JP2755648B2 |
An optical detection and control system is described for controlling the brightness of a lamp, or compensating for variations in the brightness of a lamp, such as is used, for example, in a glossmeter, hazemeter, reflectometer, colourime...
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JPH10125480A |
To provide a lighting device for making automatic lighting simultaneously with completion of exchange of a lamp on account of its cut without making power supply again in the case of a lighting device for rectifying AC power supply so as...
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JP2745827B2 |
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JP2745493B2 |
PURPOSE: To provide a headlight controller for a vehicle which is equipped with a control circuit with which the putting-ON/OFF and illumination of the headlight can be easily adjusted CONSTITUTION: A control circuit 13 for lighting-cont...
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JPH10106763A |
To eliminate a change in the light quantity of an incandescent lamp, and prevent the deterioration of an image quality by reducing a feedback quantity by the action of a feedback quantity correcting means for a specific time after a star...
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JPH10106758A |
To provide a dimmer capable of preventing flickering or variation of brightness in dimming down and obtaining the constant illumination independent of variation in frequency or difference in frequency band of the power. A dimmer has an i...
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JP2731786B2 |
Disclosed is a color/brightness-adjustable light for automobiles and a color/brightness adjustable method thereof comprising at least one light portion (10), which mixes three colors (red, green, and blue) in different combinations so as...
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JPH1064682A |
To provide an input circuit for a dimmer circuit control device to receive the input signals of various sorts universally and generate proper light dimming of a display device and lamps irrespective of the sort of the given signal. This ...
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JPH1050485A |
To secure the required timing, and prevent the breakdown of a semi- conductor due to the rush current flowing to the semiconductor used in circuits, or a relay contacts or fusion of the relay contact by providing a preheat circuit, a lig...
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JP2705433B2 |
PURPOSE: To eliminate malfunction with a primary side power supply cut off by letting a lighting system consist of control logic sections, and of excess current control sections including rush current absorbing resistors, and closing the...
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JPH10500803A |
PCT No. PCT/DE95/00653 Sec. 371 Date Nov. 11, 1996 Sec. 102(e) Date Nov. 11, 1996 PCT Filed May 17, 1995 PCT Pub. No. WO95/33299 PCT Pub. Date Dec. 7, 1995The invention relates to a radio interference suppression circuit for switching po...
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JPH10500534A |
A lighting system having at least one light source for supplying artificial light and a control unit for controlling the light source. The light source is of the type having an adjustable color temperature. The control unit is provided w...
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JPH09512951A |
Methods and apparatuses for high-speed control of lamp intensity and for high-speed optical data communication are disclosed. In particular embodiments, an arc, plasma or halogen lamp is provided with the ability to change wavelengths an...
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JP2682699B2 |
A driver circuit for switching on lamps with low cold resistance is described. The circuit includes a power transistor (T5) of which the collector-emitter path is connected to the lamp (12) in a series circuit which lies between a positi...
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JP2682846B2 |
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JP2555037Y2 |
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JP2677477B2 |
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JP2675201B2 |
PURPOSE: To provide a small-sized dimmer device at a low cost, which can change the lightness of the illumination load smoothly. CONSTITUTION: A fundamental clock generating means 17 generates clock signals required to make smooth phase ...
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JP2553324Y2 |
An improved structure of a joy light which is convenient for assembly, safe for use and variable for flash function. The structure comprises a channel and frequency controller, a main conducting wire, a plurality of sockets and plugs of ...
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JPH09510302A |
A synthesized music, sound and light system (10) that is incorporated into articles of clothing (60) such as a pair of shoes. The system (10) when activated, allows a multiplicity of lights (32) to illuminate in synchrony with the rhythm...
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JP2660715B2 |
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JPH09247923A |
To provide a switching circuit which supplies a power to an electronic circuit which is built in the automatic wall switch of a lighting appliance, etc., from the point between its switching components. A switching circuit 10 for a light...
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JPH09238424A |
To protect a driver element against overcurrent according to an actual resistance level by setting a transistor under an inoperative condition when charging voltage by a charging circuit exceeds the second threshold which is set by a set...
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JP2646219B2 |
A cover and support plate arrangement for a wall mounted device, such as a wall switch, display, dimmer, etc., for mounting to a wall box embedded in the wall and having overall surface dimensions greater than that of the wall box. The c...
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JPH09508519A |
PCT No. PCT/DE95/00149 Sec. 371 Date Sep. 6, 1996 Sec. 102(e) Date Sep. 6, 1996 PCT Filed Jan. 31, 1995 PCT Pub. No. WO95/21514 PCT Pub. Date Aug. 10, 1995A regulated power supply unit with an electronic transformer having an input for a...
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JPH09507962A |
An artificial lighting system comprises a daylight sensor for sensing a level of daylight, artificial light source means for providing a level of artificial light, daylight control means for control of the level of daylight and a control...
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JPH09199283A |
To extend the lamp life of a halogen lamp by driving the lamp at a voltage level of a fixed ratio to a rated voltage at the non-drive time of the halogen lamp based on the drive timing of the halogen lamp. A drive device is equipped with...
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JPH09161974A |
To simply and automatically detect a lighting device generating the core cut of an electric lamp and reduce the work load for replacing the electric lamp by utilizing film cutouts, and outputting the core cut of the electric lamp to the ...
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JP2620536B2 |
PURPOSE: To lower current and voltage required in a relay by providing it with a switching element for detecting the voltage of a capacitor and discharging part of the electric charge of the capacitor when the detected voltage exceeds th...
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JP2536111Y2 |
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JP2532999Y2 |
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JPH09503897A |
PCT No. PCT/EP94/02375 Sec. 371 Date Apr. 8, 1996 Sec. 102(e) Date Apr. 8, 1996 PCT Filed Jul. 19, 1994 PCT Pub. No. WO95/03681 PCT Pub. Date Feb. 2, 1995An apparatus supplies an ohmic, inductive or capacitive load with needle pulse trai...
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JP2599379B2 |
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JP2594291B2 |
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JPH0973988A |
To provide a bathroom lighting system not only by which a safe bathing environment can be provided to a handicapped person and simultaneously the comfortable bathing environment can be provided to a normally healthy person but also in wh...
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JPH0955290A |
To reduce a rectifier of an A.C. power source and arc extinguishing reliability of a thyristor of an incandescent lamp circuit. A fluorescent lamp 4, controlled by a high-frequency lighting circuit 3 connected from an A.C. power source 1...
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JPH0934634A |
To reduce the power consumption of a handset by controlling reflection of a carrier signal sent from a main body by the handset to generate a corresponding code and sending it to the main body. A carrier frequency signal is generated fro...
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JPH0917577A |
To always fix an output from a light source at work time even when the light output of the light source is decreased due to deterioration over ages by fixedly controlling an electrical output by an electrical output command means in a li...
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JPH0910174A |
PURPOSE: To achieve a lowering of noises and a prevention of impact on a light source lamp with a simple structure in the employing of a step motor which allows to obtain an accurate stopping operation and an intense holding force. CONST...
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JPH08511905A |
A lighting dimmer for controlling the current through a lighting load includes circuitry for applying a predetermined dimming level control signal to a control circuit in response to the absence of a dimming level control signal and the ...
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JP2546664B2 |
An electric lamp for the photopolymerization of dental materials is supplied with constant electric power so that constant light output is obtained. The control circuit used to this end operates with a triac (3) connected between an a.c....
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JPH08273865A |
PURPOSE: To surely shut off lighting voltage when a lamp is not capable of lighting to prevent overheating of a circuit by connecting a capacitor to a lamp in series through a starting resistance, and charging voltage which becomes a sta...
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JPH08264282A |
PURPOSE: To provide a lighting device which can display whether the lighting circuit is on operating or not even when an illuminating lamp burnt out, and its display can be conducted by a little electric power. CONSTITUTION: A lighting c...
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