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WO/2009/064099A2 |
Disclosed herein is an apparatus for connecting Light- Emitting Diode (LED) lamps to a fluorescent lamp apparatus. The fluorescent lamp apparatus is provided with a fluorescent lamp mounting unit having an Alternating Current (AC) power ...
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WO/2009/064257A1 |
The present invention relates to an energy saving circuitry for reducing the energy consumption of a magnetically ballasted fluorescent lamp. The energy-saving circuitry includes an alternating current (A.C.) voltage source, a pair of sw...
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WO/2009/062552A1 |
The invention relates to an apparatus for testing of wiring between an electronic ballast (10) and at least one first and one second connecting socket (101, 102,201, 202) for at least one discharge lamp. The apparatus comprises a control...
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WO/2009/061173A1 |
Fluorescent lamp base cap, provided with a fluorescent lamp circuit for driving a fluorescent lamp when the lamp is connected to the base cap, two input electrodes to connect the circuit to the mains power system when the base cap is con...
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WO/2009/059772A1 |
A method for supplying lighting means with feed-forward controlled power is proposed. Thereby - a power modulator is supplied with DC power, - the DC power is generated on the basis of AC power, and - the power modulator supplies power t...
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WO/2009/059643A1 |
The invention relates to an electronic ballast for operating at least one first and second discharge lamp, comprising a bridge circuit and inductors connected in series to the respective discharge lamp, a current measuring device (R3), w...
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WO/2009/061564A1 |
A system and method is provided that eliminates DC bias on at least one of a first electrolytic capacitor and a second electrolytic capacitor of a bipolar junction transistor (BJT) based inverter ballast having a shutdown control circuit...
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WO/2009/060250A1 |
The invention relates to a system for controlling the turning on, turning off and consumption of power, which overcomes the shortcomings of the prior art, providing a substantial energy saving without public spaces having to remain in da...
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WO/2009/059744A1 |
The invention relates to circuits and methods for driving the control input of a switching element which is at a high potential, in particular a transistor, wherein the control input is galvanically decoupled by means of a transformer an...
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WO/2009/058457A1 |
A lamp ballast includes an inverter circuit, a resonant circuit, a control circuit, and a startup circuit. When the DC bus reaches its final value, a capacitor in the startup circuit charges to a predetermined voltage, at which point a p...
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WO/2009/056431A2 |
The invention relates to a ballast circuit for running multiple fluorescent lamps of at least two fluorescent lamps, the multiple fluorescent lamps are connected in series and divided into groups of every two lamps, comprising: LC resona...
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WO/2009/058483A1 |
A current fed bipolar junction transistor (BJT) based inverter ballast includes base drive circuits configured to drive respective BJT switches, and high-speed drive reverse peak current limiting circuits, configured to operate in conjun...
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WO/2009/057169A1 |
A system for feeding a light source (L) such as a halogen lamp (L) via a bridge arrangement (10) having an input filter (14) for connection to a dimmer (12). The system includes a resistor (Rl) for coupling to the input filter (14) in or...
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WO/2009/058202A1 |
A dimmer switch for controlling the intensity of a dimmable screw-in compact fluorescent lamp provides smooth dimming of the fluorescent lamp and prevents flickering of the lamp due to multiple re-strikes. The dimmer switch prevents mult...
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WO/2009/053226A1 |
The invention relates to a method and a device for operating a gas discharge lamp operated at a maximum current Irun-up at triggered light and a nominal current Isteady-state at nominal output, wherein the gas discharge lamp is operated ...
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WO/2009/052690A1 |
A flash lamp used for photography, which uses a Xe lamp as the artificial light source.There are a storage battery and a boosting circuit in order in its working circuit.The output end of the boosting circuit is connected to the Xe lamp ...
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WO/2009/052868A1 |
The invention provides an electronic ballast with a control ASIC which allows a discharge lamp to be dimmed. A switch connects or disconnects a mains connection which controls a transistor which connects or disconnects a resistor, so tha...
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WO/2009/054319A1 |
Provided is a discharge lamp lighting device, which can control a load precisely while improving the practicability. When the difference of a count number (Nn) becomes a predetermined threshold value or less, a predictor circuit (35) pre...
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WO/2009/049674A1 |
The invention relates to an electronic ballast for operating a discharge lamp (La) comprising a supply unit (10) having an input (E1; E2) for connecting to a supply voltage (UZW) and an output (A1; A2), wherein the supply unit (10) is co...
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WO/2009/051350A1 |
A planar light-source driving circuit may include: a voltage source applying a DC voltage; an inductor supplying current depending on the DC voltage applied by the voltage source; a transformer having a primary side connected to the indu...
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WO/2009/046914A1 |
The invention relates to an operating device (12) for operating at least one lamp (10), said device comprising at least one input (16a, 16b, 17a, 17b) for receiving brightness control information (21, 22) and an output (23) for controlli...
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WO/2009/047174A1 |
The present invention relates to a circuit and method for double peak current control. In the present invention, the power switch tubes S1 and S2 are driven through the integrated control circuit (U1); the RC oscillating network connecte...
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WO/2009/046891A1 |
In order to determine operational parameters of a gas discharge lamp (L) to be operated with an electronic ballast (V), the cold resistance (Tcold) and the hot resistance (Rhot) of a helix (W1) are determined at at least two different ti...
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WO/2009/045548A1 |
An AC-driven LED circuit includes a first parallel circuit having a first branch and a second branch which connect at first and second common points The common points provide input and output for an AC driving current from a driver of th...
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WO/2009/039879A1 |
Electronic operating device for operating at least one discharge lamp (La) having a two-pole connection for connecting the electronic operating device to a supply voltage by way of a first pole and a second pole; a filter apparatus (10, ...
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WO/2009/040874A1 |
A method for controlling a cold-cathode tube in a lighting apparatus, wherein a wider adjustment range of luminance is ensured, and a protection circuit operates normally in the event of disconnection of lead wires or loose fitting of co...
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WO/2009/040192A1 |
The high-pressure discharge lamp is designed for the resonance mode with acoustic excitation and is equipped with a discharge vessel, which has an inner volume with an inner length IL and a maximum inside diameter ID, and which is divide...
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WO/2009/041261A1 |
An AC power supply device includes: a first AC voltage generation circuit which has first switching means for turning ON/OFF a DC voltage of a first DC power source so as to generate a first AC voltage of a positive/negative asymmetric w...
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WO/2009/041367A1 |
A high-voltage discharge lamp lighting apparatus includes an AC power supply means for supplying a square wave alternating current to a high-voltage discharge lamp having an arc tube in which first and second electrodes are disposed so a...
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WO/2009/036935A1 |
The invention relates to a method for configuring an operating device (V) for illumination means (L), particularly an electronic ballast for gas discharge lamps, wherein different types of an illumination means (L) may be connected to th...
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WO/2009/038043A1 |
Provided is a lighting device comprising a lighting circuit for lighting a plurality of hot-cathode lamps having filaments at two ends, preheating circuits for preheating the individual filaments of the hot-cathode lamps, at least one fi...
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WO/2009/036795A1 |
The invention relates to improving the electromagnetic compatibility for lamps with integrated electronic ballast which are operated without a protective earth supply line, and involves capacitively coupling the electronic ballast housin...
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WO/2009/036515A1 |
Disclosed is an inductive load detection circuit for detecting the presence of an inductive load on a dimmer circuit. The detection circuit provides for enhanced detection of the inductive load by detecting voltage ringing resulting from...
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WO/2009/034798A1 |
A discharge lamp lighting device comprises: tube current detection circuits (51 to 5n) for outputting the detection voltages (VI1 to VIn) of tube currents (I1 to In) flowing through respective discharge lamps (11 to 1n) from an inverter ...
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WO/2009/034065A1 |
A flash unit (1) with a flash generator (20) with at least one energy store (21) and at least two luminaire channels and with at least two flash tubes (11, 12, 13), wherein the flash tubes (11, 12, 13) are supplied with energy by the ene...
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WO/2009/034969A1 |
It is an object to realize a pseudo U-character tube system backlighting device configured to reduce the number of inverter transformers without imposing strict limits to mutual insulation between neighboring inverter transformers. A bac...
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WO/2009/030335A1 |
The invention relates to a control circuit (11) for the synchronised or alternate triggering at least two flash devices (18), each comprising a flash generator (16) and at least one flash means (17), by flash triggering signals of a came...
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WO/2009/030266A1 |
The invention relates to a circuit arrangement for operating a cooling system in a discharge lamp, comprising: a measurement device, with which a time-dependant measured variable of the discharge lamp can be determined, and a control dev...
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WO/2009/027921A2 |
An ignition unit (3) for igniting a discharge lamp (1), especially a high intensity discharge (HID) lamp or an ultra high intensity discharge (UHP) lamp, and a switch unit, which especially can be manually operated by a user, for switchi...
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WO/2009/028290A1 |
A discharge lamp operating device includes an inverter (10b); ballast elements (C1 to C4); and discharge lamps (1a to 1d). The inverter (10b) inputs a DC voltage (Vin) and converts it into a first AC voltage (V2) having a ground as a ref...
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WO/2009/029333A1 |
A risk of shock (ROS) protection circuit is disclosed, which comprises a capacitor that charges whenever there is a voltage between a ground on a lamp ballast and earth ground. If the capacitor exceeds a predetermined threshold voltage, ...
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WO/2009/028321A1 |
Provided is a cheap discharge lamp operating device which can mitigate irregularities of luminance by a luminance inclination of a discharge lamp. The device includes: an inverter (10a) which inputs a DC voltage and converts it into AC v...
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WO/2009/029334A2 |
A ballast circuit (6) that facilitates providing thermal protection for a fluorescent lamp includes a coupling transformer that couples an inverter circuit (8) to a control circuit. First and second transformer windings (68, 70) in the i...
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WO/2009/029174A1 |
A vehicle lighting system receives power from a power supply and includes a lighting control module, a lamp, and a ballast having a bias control circuit. The lighting control module provides a remote enable signal to the ballast in respo...
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WO/2009/027727A1 |
Lighting Controllers This invention generally relates to lighting controller, more particularly to electronic ballast circuits, sometimes referred to as electronic control gears (ECG) for gas discharge lamps. An electronic ballast for a ...
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WO/2009/025154A1 |
An AC power supply apparatus comprises a DC power supply (Vin); a transformer (T1) having a primary winding (P1) and a secondary winding (S1); a switching element (SW1) connected to the DC power supply via the primary winding of the tran...
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WO/2009/022804A2 |
A planar light-source driving circuit includes: a transformer having a secondary winding connected to both power terminals of a planar light source; a switching module connected to a primary winding of the transformer, including one or m...
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WO/2009/022445A1 |
An in-car power signal input circuit comprises a control unit (a voltage interface (4) and a control unit (5)) for acquiring a voltage (VL) applied to a first power path (L) and a voltage (VIG) applied to a second power path (IG) using t...
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WO/2009/018853A1 |
The invention relates to a method for programming electronic operating devices, wherein the operating device is programmed via a slow on-off pattern of the supply voltage thereof, the operating device after programming can automatically ...
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WO/2009/020006A1 |
Disclosed is an illuminating device wherein connection between a driving voltage supply and a wiring line can be simplified. Specifically disclosed is an illuminating device comprising a cold cathode fluorescent lamp (1), a driving means...
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