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)
11/1998
11/24/1998US5841238 Dimmer protection for compact fluorescent
11/24/1998CA2134848C Modular lamp power supply system
11/18/1998EP0878982A2 High voltage discharge lamp device
11/18/1998EP0878900A2 Quasiresonant boost power converter with bidirectional inductor current
11/18/1998EP0878114A1 Energy management control system
11/18/1998EP0878112A1 Moveable desktop load controller
11/18/1998CN1199537A Circuit arrangement
11/18/1998CN1199502A Glowswitch starter
11/17/1998US5838181 Pulse-width modulator circuit for use in low-cost power factor correction circuit
11/17/1998US5838117 Ballast circuit with synchronization and preheat functions
11/17/1998US5838116 Fluorescent light ballast with information transmission circuitry
11/17/1998US5838114 Plural ferro-resonant power supplies for powering a magnetron where the aray lies in these power supplies being independent from each other and not utilizing any common components
11/17/1998US5838110 Powered by an ac supply source
11/17/1998US5838109 Discharge lamp lighting device
11/17/1998US5838108 Method and apparatus for starting difficult to start electrodeless lamps using a field emission source
11/15/1998CA2236622A1 Reduced duty cycle high intensity discharge lamp ignitor
11/12/1998WO1998051134A1 Gas discharge lamp drive circuitry
11/12/1998WO1998051133A2 Circuit arrangement for operating a discharge lamp
11/12/1998WO1998051132A1 Electronic ballast with inverter protection circuit
11/12/1998WO1998051130A1 Simple effective electronic ballast
11/12/1998DE19819510A1 Drive circuit for discharge lamp
11/11/1998EP0877537A1 Ballast system for dimmable lamps
11/11/1998EP0876742A1 Method and control circuit for regulation of the operational characteristics of gas discharge lamps
11/11/1998CN2297031Y Halogen floor lamp with safety protector
11/10/1998US5834924 In-rush current reduction circuit for boost converters and electronic ballasts
11/10/1998US5834908 Instant-on vapor lamp and operation thereof
11/10/1998US5834907 Cold cathode tube operating apparatus with piezoelectric transformer
11/10/1998US5834906 For driving a fluorescent lamp
11/10/1998US5834904 Means for suppressing electromagnetic interference from RF-excited light sources
11/10/1998US5834903 Double resonant driver ballast for gas lamps
11/10/1998US5834902 Discharge lamp igniting and operating curcuit having interference signal suppression from 9 KHz to 100 MHz
11/10/1998US5834899 Fluorescent apparatus and method employing low-frequency excitation into a conductive-resistive inductive medium
11/10/1998CA2164819C Soft switching circuitry
11/05/1998WO1998049874A1 Dimmable ballast apparatus controlling fluorescent lamp power
11/05/1998WO1998049488A1 Ballast fixture for fluorescent lighting
11/05/1998DE19717309A1 Fluorescent lamp dimming circuit
11/04/1998EP0875129A1 Gas discharge lamp
11/04/1998CN1040599C Power supply device
11/03/1998US5831396 Circuit arrangement for operating electric lamp
11/03/1998US5831395 Three-way fluorescent adapter
11/03/1998US5831394 Circuit arrangement for the production of voltage pulse sequences, in particular for the operation of dielectrically impeded discharges
10/1998
10/29/1998WO1998048598A1 Method for dimming a fluorescent lamp arranged in the secondary circuit of a transformer and arrangement to implement said method
10/29/1998WO1998048597A1 Circuitry for dimming a fluorescent lamp
10/29/1998WO1998048506A1 Neutral-point inverter
10/29/1998DE19813187A1 Power supply for high frequency voltage
10/29/1998DE19716990A1 Appliance and circuit for operation of fluorescent lamps with reduced power consumption
10/28/1998EP0873568A1 Ballast for discharge lamp and method and apparatus for manufacturing the same
10/28/1998EP0745273B1 Circuit arrangement, and junction field effect transistor suitable for use in such a circuit arrangement
10/28/1998CN2296107Y Electronic trigger for three terminal small power lamp
10/28/1998CN2296106Y Electronic transformer for neon light
10/28/1998CN1197586A Power supply for feeding and igniting a gas discharge lamp
10/28/1998CN1197585A Electronic ballast
10/27/1998US5828244 Driving circuit and method for driving a MOS transistor with delayed activation
10/27/1998US5828187 Method and circuit arrangement for operating a discharge lamp
10/27/1998US5828186 Ignition scheme for a high pressure discharge lamp
10/27/1998US5828185 High frequency HID lamp system with lamp driven at a frequency above the audible and below the lowest lamp resonant frequency
10/27/1998US5828184 Lamp ballast drive circuit having a resistor in place of boot strap diode
10/27/1998US5828180 Driving method of discharge apparatus
10/27/1998US5828178 High intensity discharge lamp color
10/27/1998US5828177 Light circuit for discharge lamp
10/27/1998US5828174 Ignition device for discharge lamp
10/27/1998US5828170 Fluorescent lamp unit and lighting apparatus having the fluorescent lamp unit
10/22/1998WO1998047324A2 Safety-enhanced transformer circuit
10/22/1998WO1998047323A1 Discharge lamp lighting device and illumination device
10/22/1998DE19715254A1 Gas discharge lamp operating circuit incorporating lamp monitoring function
10/21/1998CN1196867A Dimmable ballast
10/21/1998CN1196866A Ballast circuit
10/21/1998CN1196865A Inverter
10/21/1998CN1196826A High-pressure discharge lamp
10/20/1998US5826126 Flexible printed circuit board housing structure for a camera
10/20/1998US5825223 Technique for controlling the slope of a periodic waveform
10/20/1998US5825139 Lamp driven voltage transformation and ballasting system
10/20/1998US5825138 Timing of different phases in an ignition circuit
10/20/1998US5825137 Electronic ballasts for plural lamp fluorescent lighting without feedback circuitry
10/20/1998US5825136 Circuit arrangement for operating electric lamps, and an operating method for electronic lamps
10/20/1998US5825133 For supplying power to a fluorescent lamp
10/20/1998US5825132 RF driven sulfur lamp having driving electrodes arranged to cool the lamp
10/20/1998US5825130 External metallization configuration for an electrodeless fluorescent lamp
10/15/1998WO1998046054A2 Ballast
10/15/1998WO1998046053A2 Anti-flicker scheme for a fluorescent lamp ballast driver
10/15/1998WO1998046052A2 Ballast for compact fluorescent lamp with current protection
10/15/1998WO1998046051A1 Ballast
10/15/1998WO1998046050A1 Triac dimmable compact fluorescent lamp with low power factor
10/15/1998WO1998046049A1 Method and circuit for operating an electrical light
10/15/1998WO1998045873A1 A high power compact fluorescent lamp
10/15/1998DE19809749A1 Bias device for low pressure gas discharge lamp high frequency operation
10/15/1998DE19714416A1 Verfahren und Schaltungsanordnung zum Betreiben eines elektrischen Leuchtmittels, insbesondere einer Gasentladungslampe, zB einer UV-Niederdruckröhre Method and circuit arrangement for operating an electrical luminous means, in particular a gas discharge lamp, for example a UV low-pressure tube
10/15/1998CA2257640A1 Ballast
10/15/1998CA2257639A1 Triac dimmable compact fluorescent lamp with low power factor
10/15/1998CA2257638A1 Ballast
10/15/1998CA2257636A1 Anti-flicker scheme for a fluorescent lamp ballast driver
10/14/1998EP0871350A2 Lighting device
10/14/1998EP0871349A1 Discharge lamp operating electronic device
10/14/1998EP0871348A1 Ballast for independent parallel of low pressure gas discharge lamps
10/14/1998EP0871347A1 Ballast with automatic restart
10/14/1998EP0870318A1 Glowswitch starter
10/14/1998CN1195959A Power supply device
10/14/1998CN1195762A Apparatus and method for controlling lighting of fluorescent lamp for refrigerator
10/14/1998CN1040272C 逆变装置 Inverter device
10/13/1998US5822201 Double-ended inverter with boost transformer having output side impedance element
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