Patents
Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100)
10/1998
10/13/1998US5821702 Discharge lamp control circuit using a luminous flux table
10/13/1998US5821699 Ballast circuit for fluorescent lamps
10/13/1998US5821696 Method and circuit to start and operate high pressure discharge lamps
10/13/1998US5820252 Light fixture housing
10/08/1998WO1998044764A1 Power supply system for a group of lamps
10/08/1998DE19739740A1 Light radiation control device for vehicle gas discharge lamp
10/08/1998DE19739531A1 Light radiation control device for vehicle gas discharge lamp
10/08/1998DE19713262A1 Automatic gas discharge lamp switching device
10/08/1998DE19708783C1 Verfahren und Vorrichtung zum Regeln des Betriebsverhaltens von Gasentladungslampen Method and device for regulating the operating behavior of gas discharge lamps,
10/08/1998CA2284892A1 Power supply system for a group of lamps
10/07/1998EP0869602A2 Power supply device
10/07/1998EP0869536A2 Neon gas discharge lamp providing white light
10/07/1998EP0869529A2 Discharge tube
10/07/1998EP0868833A1 High-pressure discharge lamp with an auxiliary ignition electrode as well as circuitry and process for operation
10/07/1998CN1195464A Circuit arrangement
10/07/1998CN1040162C Multifunctional universal electricity saving switch
10/07/1998CN1040145C Serial tubular electronic fluorescent light
10/06/1998US5818709 Inverter apparatus
10/06/1998US5818675 Protection device for electronic circuits
10/06/1998US5818669 Zener diode power dissipation limiting circuit
10/06/1998US5818181 Neon lamp isolation transformer for mid-point commoned neon lamps
10/06/1998US5818176 Circuit arrangement for the operation of discharge lamps
10/06/1998US5818175 Gas discharge image display
10/06/1998US5818172 Lamp control circuit having a brightness condition controller having 2.sup.nrd and 4th current paths
10/06/1998US5818167 Electrodeless high intensity discharge lamp having a phosphorus fill
09/1998
09/30/1998EP0868115A2 Circuit for ignition of a HID lamp
09/30/1998EP0867061A1 Power supply for non-linear loads
09/30/1998EP0715779B1 Circuit arrangement
09/30/1998CN1194569A Circuit for protecting fluorescent lamp from overload
09/30/1998CN1194493A Power supply device
09/29/1998US5815388 Polarity reversing circuit having energy compensation
09/29/1998US5815067 Single control wire device for HID dimming
09/29/1998US5814976 For operating a high pressure gas discharge lamp
09/29/1998US5814971 Emergency florescent inverter for magnetic and electronic ballasts
09/29/1998US5814951 Low-pressure discharge lamp containing a partition therein
09/29/1998US5814949 Automatic pulse generator cuttoff with capacitors connected on both sides of the primary winding of the trigger transformer
09/29/1998US5814948 Flash circuit for low cost cameras
09/29/1998US5814938 For providing high voltage power to a cold cathode tube
09/24/1998WO1998042165A1 Ballast method and apparatus and coupling therefor
09/24/1998CA2286972A1 Ballast method and apparatus and coupling therefor
09/23/1998EP0866647A2 Circuit for operating a high pressure discharge lamp with a starting period shunting mode
09/23/1998EP0866646A2 Process and circuit for operating at least one discharge lamp
09/23/1998EP0865673A1 Piezo-electric transformer
09/23/1998EP0771492B1 Servo-amplifier for controlling a high-ohmic low-voltage source
09/23/1998CN2292368Y Electronic ballast for neon lamp
09/23/1998CN1193839A 电源装置和放电灯点灯装置 The power supply device and a discharge lamp lighting device
09/22/1998US5811942 Device for optimized management of fluorescent lamps
09/22/1998US5811941 High frequency electronic ballast for a high intensity discharge lamp
09/22/1998US5811940 Phase-shift lamp control
09/22/1998US5811939 Bi-level control system for lighting and other applications
09/22/1998US5811938 Emergency lighting ballast for starting and operating two compact fluorescent lamps with integral starter
09/22/1998US5811937 Bulb-type electronic energy-saving lamp
09/22/1998US5811914 Electrodeless low-pressure discharge lamp
09/22/1998US5811892 Power supply system including mechanical output switches for use with a plurality of display tubes
09/18/1998CA2232328A1 Process and circuit arrangement for operation of at least one discharge lamp
09/16/1998EP0864247A1 Input circuit for the starter of a high-pressure gas-filled discharge lamp
09/16/1998CN1193451A Circuit arrangement
09/16/1998CN1193413A Integrated HID reflector lamp
09/16/1998CN1193250A Switch-over control for working circuit
09/15/1998US5808597 Illumination device for liquid crystal display apparatus
09/15/1998US5808450 Special alternator assembly with an inherent ballast impedance characteristic for lighting systems
09/15/1998US5808423 Lighting control for reducing energy consumption
09/15/1998US5808422 Lamp ballast with lamp rectification detection circuitry
09/15/1998US5808421 Ballast circuit having dual voltage source and emergency battery
09/15/1998US5808414 Electrodeless fluorescent lamp with an electrically conductive coating
09/15/1998US5808402 Discharge lamp
09/15/1998US5806272 Foam core spacer assembly
09/11/1998WO1998039951A1 Electronic ballast
09/11/1998WO1998039950A1 Method and device for controlling the operation of gas discharge lamps
09/11/1998WO1998039949A1 Control switch and electronic ballast with said control switch
09/11/1998WO1998039948A1 Method and device for detecting the rectification effect occurring in a gas discharge lamp
09/10/1998DE19757295A1 Elektronisches Vorschaltgerät Electronic ballast
09/10/1998DE19708792A1 Verfahren und Vorrichtung zum Erfassen des in einer Gasentladungslampe auftretenden Gleichrichteffekts Method and apparatus for detecting the rectifier effect appearing in a gas discharge lamp
09/10/1998DE19708791A1 Steuerschaltung und elektronisches Vorschaltgerät mit einer derartigen Steuerschaltung Control circuit and electronic ballast with such a control circuit
09/09/1998EP0863690A2 Self oscillating circuit
09/09/1998EP0863603A1 Circuit for protecting fluorescent lamp from overload
09/09/1998EP0818127A4 Lamp protective, electronic ballast
09/09/1998CN2290967Y 电子镇流器 Electronic Ballast
09/09/1998CN2290966Y Multi-tube energy saving electronic ballast
09/09/1998CN2290965Y High power factor compact fluorescent lamp
09/09/1998CN1192646A Electronic ballast for fluorescent lamp
09/09/1998CN1039766C Fluorescent lamp controlling arrangement
09/08/1998US5806055 Solid state ballast system for metal halide lighting using fuzzy logic control
09/08/1998US5805399 Apparatus for detecting luminous tube and power supply faults where ground fault currents may be absent
09/08/1998US5804926 Lighting circuit that includes a comparison of a "flattened" sinewave to a full wave rectified sinewave for control
09/08/1998US5804924 Discharge lamp with two voltage levels
09/07/1998CA2226604A1 Neon gas discharge lamp providing white light
09/03/1998WO1998038840A1 Discharge lamp lighting equipment and illuminating system
09/03/1998WO1998038708A1 Lighting apparatus for discharge lamps and discharge lamp socket used therein
09/03/1998WO1998038667A1 Power transformer circuit with resonator
09/03/1998DE19708187A1 Lamp circuit control
09/03/1998DE19708148A1 Electrodeless ultraviolet gas discharge lamp excited by high frequency oscillator
09/02/1998EP0861574A1 Power supply for light sources, particularly for the quick ignition of fluorescent lamps and the like
09/02/1998EP0643900B1 Electrodeless discharge lamp containing push-pull class e amplifier and bifilar coil
09/02/1998CN2290166Y D. C. Lighting installation
09/02/1998CN2290165Y Electric-saving electronic ballast for fluorescent lamp
09/02/1998CN1192118A Operation circuit of low-voltage discharge lamp using low-voltage power-supply
09/01/1998US5801495 Low-pressure discharge lamp containing partitions therein
09/01/1998US5801494 Rapid restrike with integral cutout timer
09/01/1998US5801492 Electronic energy converter to supply a high frequency signal to a load