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WO/2011/153831A1 |
A control system for lamp source comprises a lamp (510), a ballast (500) connected with the lamp (510) and a lamp controller (601). The ballast (500) comprises a rectification boost power factor correction (PFC) controller and a buck DC ...
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WO/2011/154180A2 |
The invention specifies a light-emitting diode arrangement, with a piezoelectric transformer (1) which has at least one output-side connection point (11), and with a high-voltage light-emitting diode (2), which comprises a high-voltage l...
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WO/2011/156083A1 |
An electronic high intensity discharge (HID) ballast (102) is presented which includes a dual mode buck converter (120) providing a DC output voltage (122) to drive an inverter (140), where the buck converter (120) regulates the DC outpu...
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WO/2011/153020A1 |
Embodiments of the present invention provide for the rapid reignition of a high intensity discharge lamp. In one embodiment of the invention, an apparatus for a fast reignition of a high intensity discharge lamp is disclosed. The apparat...
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WO/2011/151107A1 |
The invention relates to a circuit arrangement for operating a discharge lamp (FL). The coils (Wh, Wc) of the lamp are heated using a conductor (TR1). In order to identify the lamp, one coil of the conductor is bridged by a resistor (R5).
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WO/2011/148954A1 |
Disclosed is an LED illuminating device having an illuminating load using an LED. The LED illuminating device includes a rectangular bridge circuit (40) wherein a first switching transistor (41), a second switching transistor (42), a thi...
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WO/2011/149866A2 |
A conduction angle detection circuit, and systems and methods incorporating the same, is disclosed. The circuit includes a comparator having a first input and a second input, and configured to provide a pulse-width modulated output in re...
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WO/2011/147645A1 |
The invention relates to a method for operating discharge lamps of different lamp types on an operating device. The value of a first parameter that is correlated to the coil resistance of the discharge lamp is determined prior to lightin...
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WO/2011/149838A2 |
A system may include a switch arranged to control a lighting load, a processor arranged to control the switch, and a failsafe circuit arranged to monitor the processor and actuate the switch if the processor fails. The failsafe circuit m...
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WO/2011/147464A1 |
The invention relates to a method for compensating the burn-back of electrode tips in high-pressure discharge lamps, wherein during a predetermined duration the power supplied to the high-pressure discharge lamp is modulated between a lo...
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WO/2011/149863A2 |
A dimmer conduction angle detection circuit, and systems and methods incorporating the same, is disclosed. The circuit receives a gate drive signal from a PFC circuit and provides a dimmer reference level signal representative of a dimme...
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WO/2011/144375A1 |
The present invention relates to a control apparatus (10) for at least one circuit arrangement (SA1) for operating fluorescent lamps and LEDs. Switching can take place between operation of the fluorescent lamps and the LEDs via a control...
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WO/2011/144403A1 |
The invention proposes a circuit arrangement for igniting a high-pressure discharge lamp, in which a high-voltage capacitor (C2) charged up to the ignition voltage of the lamp (XBO) is switched to the electrodes of the lamp (XBO) via a s...
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WO/2011/143957A1 |
The present invention discloses a dimming drive method, device and dimmable light. The dimming drive method comprises that: after a light source drive circuit which supplies power to a light source and micro control unit (MCU) is switche...
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WO/2011/141363A1 |
The invention relates to a method for operating a discharge lamp, in which the discharge lamp is operated using a commutation pulse current, wherein the amplitude of the commutation pulse current is controlled. Moreover, the invention re...
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WO/2011/141282A1 |
The invention relates to a method for operating a high-pressure discharge lamp, having the following steps: a) a voltage having a first frequency is applied to the high-pressure discharge lamp during a first time slice, and said voltage ...
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WO/2011/140686A1 |
An emergency electronic ballast comprising a ballast circuit and an emergency device circuit is disclosed in the invention. The ballast circuit includes a rectifier bridge circuit, a power factor correction (PFC) circuit, a filtering cap...
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WO/2011/141768A1 |
A method for using an electronic ballast circuit configured to operate a high intensity discharge (HID) lamp. Multiple light emitting diodes (LEDs) are attached to the current output of the electronic ballast circuit, and current is driv...
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WO/2011/139624A1 |
A diode selection circuit for a light emitting apparatus according to some embodiments includes a plurality of light emitting devices coupled in series. The diode selection circuit includes a comparator configured to receive a rectified ...
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WO/2010/139528A9 |
The invention relates to a circuit arrangement (20) for a piezo transformer (22) comprising a driver circuit (23), to which the piezo transformer (22) can be connected, and a current sensor (21) for determining an incoming power signal (...
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WO/2011/138846A1 |
Provided is a high-pressure discharge lamp turn-on apparatus, wherein, until a prescribed time elapses since starting a turn-on, a constant-current having a value of Ib is supplied to the high-intensity discharge lamp (4) for a period of...
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WO/2011/137722A1 |
A power factor correction circuit is composed of a charge pump (3), a freewheeling circuit (2) and a high frequency filter circuit (1). An inductor (L1) of the high frequency filter circuit (1), an inductor (M2) of the freewheeling circu...
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WO/2011/134800A2 |
The invention relates to a method of operating a gas discharge lamp (1), wherein said gas discharge lamp (1) comprises a discharge vessel (2), two electrodes (4a, 4b) protruding into the hollow space (3) of said vessel, and at least one ...
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WO/2011/136785A1 |
A lighting ballast is programmable as to input and output parameters. Both operational characteristics and sensed data are used to control the ballast parameters. The ballast is configured to recapture as electrical energy heat produced ...
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WO/2011/135493A2 |
The invention describes a method of driving an arc-discharge lamp (1), which method comprises the steps of detecting a mechanically induced fluctuation in luminous flux of the lamp (1) occurring as a result of a physical displacement of ...
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WO/2011/134796A2 |
The invention relates to a method for operating a gas-discharge lamp (16) during the transition from the switched-off state without an electric arc into a state that generates light in a stable manner. According to the method, a booster ...
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WO/2011/132112A1 |
A discharge lighting assembly and a method of operating a discharge lamp 10 are described. The discharge lamp 10 includes a discharge vessel 20 with two electrodes 24 for forming an arc discharge. A driver circuit 12 supplies electrical ...
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WO/2011/128346A1 |
Illuminated Double-Profile Fence Post and Associated Fence Structure The tubular post comprises a first part that have ear portions on the left and right of an outwardly protruding portion where said ear portions have at their outer ends...
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WO/2011/128000A1 |
A cylindrical hollow body fence post disposed according to the present invention features a first closed-geometry longitudinally hollow inner profile interconnected by at least two longitudinally extending bridging elements to a second c...
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WO/2011/124767A1 |
The object of the invention is a transformer circuit arrangement comprising a first protection unit (116) integrated to a secondary circuit (104) of a transformer (100) in serial connection to at least one capacitive element (112) to pro...
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WO/2011/047817A9 |
The invention relates to a device for controlling a plurality of LED strips, each of which includes one or more serially connected LEDs and to which a constant control current is applied at control nodes. According to the invention, a tr...
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WO/2011/127145A2 |
An electronic ballast circuit for driving a gas discharge lamp is operable to control the lamp to avoid flicking and flashing of the intensity of the lamp during low temperature conditions. The ballast circuit includes an inverter circui...
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WO/2011/127009A2 |
A method of striking a gas discharge lamp Involves the steps of generating a high-frequency square-wave voltage having an operating frequency, generating a sinusoidal voltage from the high-frequency square-wave voltage, controlling the o...
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WO/2011/124310A1 |
In a known method for operating an amalgam lamp with a rated power Poptimum, provision is made for a lamp voltage Uoptimum suitable for maximum UVC emission to be applied or for a lamp current Ioptimum suitable for maximum UVC emission t...
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WO/2011/122274A1 |
Disclosed is a high-pressure discharge lamp lighting device intended to increase the life of a discharge lamp by optimally maintaining the electrode projection shape and tip shape over the long term. In a lighting device that lights a hi...
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WO/2011/115509A1 |
An electronic circuit for connection between a halogen ballast and a load circuit for stabilising the output of the ballast, wherein the electronic circuit comprises at least one inductor and at least one capacitor; wherein the capacitor...
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WO/2011/114245A1 |
An electronic ballast for parallel lamp operation with program start including an electronic ballast for fluorescent lamps operably connected in parallel, each of the fluorescent lamps having lamp filaments. The electronic ballast includ...
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WO/2011/113354A1 |
A dimming ballast device (20) of an electrodeless lamp, used in an electrodeless lamp (30) and a direct-current voltage (40), includes a frequency converting unit (208), a control unit (210) and a dimmer signal output unit (212). The con...
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WO/2011/107902A2 |
A fluorescent lamp information detection system and method including an information detection system for fluorescent lamps, the system including inverters (120), each of the inverters (120) being operably connected across the high end fi...
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WO/2011/107830A1 |
A ballast circuit adapted for converting an input alternating current (AC) mains power received at input terminals to an output alternating current (AC) to supply a load, e.g. a gas discharge lamp. The output terminals of the ballast con...
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WO/2011/104644A1 |
A low-cost HID lighting system (100) comprises: - an HID lamp (1) having an aspect ratio less than 6; and - a resonant electronic driver (10) for driving the HID lamp, the driver being designed for providing alternating current to the la...
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WO/2011/105651A1 |
Disclosed is a discharge lamp stabilizer for controlling illumination. The stabilizer of the present invention controls the illumination of the discharge lamp via a method for changing the inductance of an internal variable inductor, and...
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WO/2011/092527A1 |
The invention relates to an AC voltage conversion and switching device comprising a main circuit and a switching circuit. The input of the device is connected to the power supply, and the output to the consumer. In the main circuit a con...
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WO/2011/092528A1 |
The invention relates to a device for ignition and operation of discharge tubes in an energy saving mode and using a bridge- coupled DC/AC converter. The discharge tube is connected to the AC output of the bridge- coupled device. The ess...
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WO/2011/086440A2 |
This invention relates to a power factor correction circuit of an electronic ballast. The electronic ballast includes a rectification circuit, a first capacitive element and an inverter. The power factor correction circuit comprises a un...
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WO/2011/086090A2 |
The invention relates to a method for controlling lighting means, in which an operating device for lighting means performs a change in the operating mode, such as for example igniting or dimming, as a response to an incoming signal recei...
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WO/2011/031110A9 |
Disclosed are an apparatus and a method for generating a constant current pulse wave, a medical operation method using the same, and a light generating apparatus. The apparatus for generating the constant current pulse wave comprises: a ...
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WO/2011/085275A2 |
A lamp driver circuit to selectively energize one or more lamps is provided. The inverter circuit has a transformer with primary and secondary windings to provide voltage to the lamps. A filter is connected to the primary winding to rece...
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WO/2011/010818A9 |
The device for supplying electrostatic force of the present invention comprises: an alternating-current power-source supply unit for supplying an alternating-current power source; a rectifying circuit which receives and rectifies the alt...
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WO/2011/076522A1 |
The present invention relates to a field emission lighting arrangement, comprising a field emission light source comprising an anode and a cathode and having an inherent predetermined capacitance, an inductor having a predetermined induc...
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