Patents
Sitemap › H05 - Electric techniques not otherwise provided for › H05B - Electric heating; Electric lighting not otherwise provided for › H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps
Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100)
12/2003
12/11/2003CA2431666A1 Discharge lamp operating circuit with a current regulation circuit and a circuit for detection of the proximity to capacitive operation
12/10/2003EP1370122A2 Discharge lamp ballast with dimming
12/10/2003EP1370121A2 Ballast circuit
12/10/2003EP1370120A1 Device for operating discharge lamp
12/10/2003EP1368998A2 El driver for small semiconductor die
12/10/2003EP1368819A1 Mercury discharge lamps
12/10/2003CN2591925Y Electronic stabilizer for small size fluorescent lamp tube
12/10/2003CN2591924Y Protector of composite metal lamp
12/10/2003CN2591923Y Fluorescent lamp starter
12/10/2003CN2591922Y Fluorescent lamp electronic starter
12/10/2003CN1461582A Circuit arrangement for discharge lamp comprising resonant half-bridge converter driven by a class-E driver
12/10/2003CN1461581A Lamp electronic end cap for integral lamp
12/10/2003CN1461147A Projector and lamp information managing method
12/10/2003CN1130957C Signal switch ballash with power factor correction
12/09/2003US6661337 Processor based strobe with feedback
12/09/2003US6661185 Dimmable self-ballasted fluorescent lamp and discharge lamp operating apparatus
12/09/2003US6661184 Light source device
12/09/2003US6661183 Apparatus and method for intercepting leakage of microwave
12/09/2003US6661182 Lamp ballast system having improved power factor and end-of-lamp-life protection circuit
12/09/2003US6661181 Backlight assembly and liquid crystal display device having the same
12/09/2003US6661177 High-pressure discharge lamp with ignition circuit including halogen incandescent lamp
12/09/2003US6661176 High pressure discharge lamp, high pressure discharge lamp lighting apparatus and luminaire therefor
12/09/2003US6661072 Piezoelectric ceramic transistor
12/09/2003US6660973 Radiant heating apparatus and discharge current detecting circuit therefor
12/09/2003CA2344408C Ballast circuit for high intensity discharge lamps
12/09/2003CA2296962C Open loop current control ballast for low pressure mercury germicidal uv lamps
12/04/2003WO2003101159A1 Lamp ballast with series switchable inductor
12/04/2003WO2003101151A2 Electronic ballast for a discharge lamp
12/04/2003US20030222631 DC/AC and DC/DC power supply for LCD displays
12/04/2003US20030222605 Power feeding apparatus for discharge lamp
12/04/2003US20030222604 Dimmer for energy saving lamp
12/04/2003US20030222602 Lamp lighting controlling apparatus and light emitting apparatus
12/04/2003US20030222601 Discharge lamp device and backlight using the same
12/04/2003US20030222599 Discharge lamp lighting circuit
12/04/2003US20030222598 Electronic ballast circuit for operating a high intensity discharge lamp
12/04/2003US20030222597 Ballast circuit
12/04/2003US20030222596 Hid electronic ballast with glow to arc and warm-up control
12/04/2003US20030222595 Single stage HID electronic ballast
12/04/2003US20030222594 High pressure discharge lamp lighting apparatus and luminaire using thereof
12/04/2003US20030222593 Discharge lamp ballast with dimming
12/04/2003US20030222588 Modular lamp controller
12/04/2003US20030222537 Multi-load piezoelectric transformation circuit driver module
12/04/2003US20030222323 Piezoelectric ceramic transistor
12/03/2003EP1367865A2 Discharge lamp device and backlight using the same
12/03/2003EP1367864A1 Method for starting a discharge lamp using high energy initial pulse
12/03/2003EP1367321A1 Energy-saving lamp including a photo diode
12/03/2003EP1366646A1 System and method for operating a hid lamp
12/03/2003EP1269801B1 Method and ballast for dimming a light fitted with a fluorescent lamp (l)
12/03/2003CN2590326Y Novel energy-saving lamp
12/03/2003CN2590269Y Function convertible monopole multi-path remote controlled light-modulating speed-regulating energy-saving wall switch for lamp and electric fan
12/03/2003CN2590140Y Resonance phase-shift type electric inductance ballast
12/03/2003CN1460396A Apparatus and method for driving high intensity discharge lamp
12/03/2003CN1460395A 电路布置 Circuit layout
12/03/2003CN1459999A Method and device for preventing high frequency electron ballast to produce accoustic oscillation
12/03/2003CN1459998A Starting method and starting apparatus for high pressure discharge lamp and high pressure discharge lamp
12/02/2003US6657838 LCD backlight inverter
12/02/2003US6657404 Method and apparatus for power control
12/02/2003US6657403 Circuit arrangement for operating a fluorescent lamp
12/02/2003US6657401 Ballast for discharge lamp
12/02/2003US6657400 Ballast with protection circuit for preventing inverter startup during an output ground-fault condition
12/02/2003US6657399 Self-oscillating circuit for driving high-side and low-side switching devices with variable width pulses
12/02/2003US6657389 Glow discharge lamp, electrode thereof and luminaire
11/2003
11/27/2003WO2003098979A1 Projection system
11/27/2003WO2003098978A1 Electronic ballast for discharge lamps
11/27/2003WO2003098790A1 Circuit arrangement for a resonant converter and method of operating said converter
11/27/2003WO2003098659A2 Method and device for driving a metal halide lamp
11/27/2003WO2003098326A2 Backlight assembly having external electrode fluorescent lamp, method of driving thereof and liquid crystal display having the same
11/27/2003US20030218435 Processor based strobe with feedback
11/27/2003CA2485680A1 Electronic ballast for discharge lamps
11/26/2003EP1365634A2 Light source device
11/26/2003EP1364446A1 Self-oscillating circuit for driving high-side and low-side switching devices with variable width pulses
11/26/2003EP1364389A1 Device for operating a fluorescent tube
11/26/2003EP0941637B1 Controller for operating a high pressure gas discharge lamp
11/26/2003CN2588721Y DC electronic ballast
11/26/2003CN2588720Y Sound-sensing beat type lamp set control circuit
11/26/2003CN1459218A Cpacitively coupled fluorescent lamp package
11/26/2003CN1459217A System for driving capacitively coupled fluorescent lamp
11/26/2003CN1459180A Method and system for assigning and binding network address of ballast
11/26/2003CN1458814A Circuit device for operating discharge lamp
11/26/2003CN1458813A 光源装置 The light source device
11/26/2003CN1458547A Back lighting device, its driving method, and liquid crystal display with said device
11/25/2003US6654268 Method and apparatus for controlling minimum brightness of a fluorescent lamp
11/25/2003US6654221 High voltage power supply device for lighting discharge tube having protection circuit and fault protection circuit
11/25/2003US6653801 Mercury-free metal-halide lamp
11/25/2003US6653800 Ballast circuit with lamp cathode protection and ballast protection
11/25/2003US6653799 System and method for employing pulse width modulation with a bridge frequency sweep to implement color mixing lamp drive scheme
11/25/2003CA2190150C Switching power supply for the operation of electric lamps
11/20/2003WO2003096762A1 Trigger circuit for an electronic flash device
11/20/2003WO2003096760A1 Method and circuit arrangement for operating a high-pressure gas discharge lamp
11/20/2003WO2003096135A1 Pwm controller with automatic low battery power reduction circuit and lighting device incorporating the controller
11/20/2003US20030214638 Projector and lamp information management method used for the same
11/20/2003US20030214478 Backlight assembly having external electrode fluorescent lamp, method of driving thereof and liquid crystal display having the same
11/20/2003US20030214257 Inductively powered lamp assembly
11/20/2003US20030214256 Inductively powered lamp assembly
11/20/2003US20030214255 Inductively powered apparatus
11/20/2003US20030214254 Electronic ballast for discharge lamps
11/20/2003US20030214253 Light source device
11/20/2003US20030214252 Circuitry arrangement for the operation of a plurality of gas discharge lamps
11/20/2003US20030214251 DC voltage converting circuit
11/20/2003US20030214239 Safety shield assembly for electrical apparatus
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