Patents
Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100)
01/1986
01/29/1986EP0169673A1 Power supply with power factor correction
01/28/1986US4567404 Ballast circuit having electromagnetic interference (EMI) reducing means for an improved lighting unit
01/28/1986US4567403 High pressure discharge lamp with incorporated starter
01/28/1986US4566769 Power supply unit for electronic flash
01/28/1986CA1199961A1 Electronic ballast system
01/22/1986EP0168947A1 A circuit for igniting a gas discharge tube
01/15/1986EP0168087A1 High-pressure sodium discharge lamp
01/14/1986US4564897 Power source
01/14/1986CA1199363A1 Starting and operating circuit for gaseous discharge lamps
01/08/1986CN85201206U Saving power supply long service life fluorescent lamp starter
01/07/1986US4563719 Ballasts with built-in ground-fault protection
01/07/1986US4563616 Non-saturating, self-driven switching inverter for gas discharge devices
01/07/1986US4563071 For a camera
01/07/1986CA1199078A1 Methods for operation of programmable signal control circuits
01/01/1986CN85200233U Power saving duplex tube fluorescent lamp powered by 380-v 2-phase
12/1985
12/31/1985US4562527 Autoconverter with improved charging switch system
12/31/1985US4562384 Variable reactance inductor with adjustable ranges
12/31/1985US4562383 Inverter for use with a dc voltage source
12/31/1985US4562382 Solid-state inverter including a multiple core transformer
12/31/1985US4562381 Starting circuit for multiple fluorescent lamps
12/31/1985US4562379 Glow switch starter having metal oxide deposit
12/31/1985US4561751 Of a camera
12/27/1985EP0165893A2 Brightness control device for a fluorescent lamp
12/24/1985US4560908 High-frequency oscillator-inverter ballast circuit for discharge lamps
12/24/1985US4560906 Lighting system and compact electric lighting unit
12/18/1985EP0164774A1 Circuit device for controlling the running voltage of high-pressure gas-discharge lamps
12/17/1985US4559479 Starting and dimming circuit for fluorescent lamps
12/17/1985US4559478 Fluorescent lamp circuit
12/17/1985CA1198155A1 Phase-controlled ballast having shifting control
12/17/1985CA1198153A1 High frequency fluorescent lamp circuit
12/10/1985US4558262 Load switching arrangement for gas discharge lamp circuit
11/1985
11/27/1985EP0162504A1 Electrodeless low-pressure discharge lamp
11/27/1985EP0162156A1 Means and method for controlling lumen output and power consumption of phoshor excitable lamps
11/26/1985US4555753 Rectifier circuit with two rectifiers
11/26/1985US4555648 Electronic flash unit utilizing pre-flash illumination of flashtube
11/26/1985US4555647 Ballast circuit for gas discharge tubes utilizing time-pulse additions
11/19/1985US4554487 Electronic fluorescent lamp ballast with overload protection
11/12/1985US4553072 Circuit connected in series with a discharge valve source
11/12/1985US4553071 Electronic ballast for fluorescent lamp
11/12/1985US4553070 Electronic ballast for a discharge lamp
11/12/1985US4552868 14-Amino steroid derivatives, a process for the preparation thereof and method of use thereof
10/1985
10/29/1985US4550275 High efficiency pulse ultraviolet light source
10/29/1985US4550272 Operating circuit for electric discharge lamp
10/24/1985WO1985004778A1 Film video player with electronic strobe light
10/24/1985WO1985004769A1 Process for releasibly connecting electric lighting apparatuses, adapter respectively ballast and circuit with a high frequency generator
10/23/1985EP0159009A2 Circuit breaker with thin-walled bulb
10/23/1985EP0158924A1 Neon sign control device
10/22/1985CA1195724A1 Lead-type ballast apparatus with improved power factor for operating a high-intensity-discharge sodium lamp
10/16/1985EP0158390A1 DC/AC converter for igniting and feeding a gas and/or vapour discharge lamp
10/16/1985EP0158072A1 Electronic ballast for multiple fluorescent lamps
10/15/1985US4547706 Inverter with a load circuit containing a series oscillating circuit and a discharge lamp
10/15/1985US4547705 Discharge lamp lightening device
10/10/1985WO1985004545A1 Ballast and control unit for electric discharge lamp
10/09/1985EP0156846A1 Minimization of harmonic contents for mains operated solid state inverters driving gas discharge lamps
10/08/1985US4546290 Ballast circuits for discharge lamp
10/02/1985EP0156439A1 Electrical circuit arrangement for igniting and feeding a gas and/or vapour discharge tube
10/01/1985US4544863 Power supply apparatus for fluorescent lamp
10/01/1985US4544862 Lighting circuit for electric discharge lamp
09/1985
09/25/1985EP0155729A1 Circuit device for the AC operation of high-pressure discharge lamps
09/25/1985EP0155303A1 Inverter circuit with a control circuit for leading transistors more effectively into a turned-off state.
09/24/1985CA1194093A1 Sequence start lamp ballast with current spike suppression means
09/18/1985EP0155099A1 Electric power-saving device for discharge lamps
09/18/1985EP0155059A2 Circuit arrangement for switching the current in an inductive load
09/10/1985US4540917 Pulse network for fluorescent lamp dimming
09/04/1985EP0153345A1 Flash tube employing multiple flashes
09/03/1985US4539513 Circuit arrangement for starting and operating a high-pressure gas discharge lamp
08/1985
08/29/1985WO1985003835A1 High frequency oscillating circuit for effecting a gas discharge and utilization thereof
08/27/1985US4538095 Series-resonant electronic ballast circuit
08/27/1985US4538094 Lamp ballast with near unity power factor and low harmonic content
08/27/1985US4538093 Variable frequency start circuit for discharge lamp with preheatable electrodes
08/27/1985US4538092 Dimmer and starting circuits for a fluorescent lamp
08/27/1985CA1192605A1 Lighting system
08/21/1985EP0152264A2 Fluorescent lamp device
08/21/1985EP0152248A1 Fluorescent tube ignitor
08/21/1985EP0152026A1 Feeding device for controlling the light intensity of at least one discharge lamp, and use of this device
08/20/1985US4536680 Resistive lamp ballast with re-ignition circuit
08/13/1985USRE31970 High efficiency ballast system for gaseous discharge lamps
08/13/1985US4535399 Regulated switched power circuit with resonant load
08/13/1985US4535271 High frequency circuit for operating a high-intensity, gaseous discharge lamp
08/07/1985EP0150585A1 Output current controller for fluorescent lamp ballast
08/07/1985EP0150536A1 Ballast adaptor for improving operation of fluorescent lamps
08/07/1985EP0150237A1 Circuit arrangement for operating a high-pressure discharge lamp with a battery
08/06/1985US4533854 Mechanism and method for controlling the temperature and output of a fluorescent lamp
08/06/1985US4533853 Mechanism and method for controlling the temperature and output of a fluorescent lamp
08/06/1985CA1191540A1 Line operated fluorescent lamp inverter ballast
07/1985
07/30/1985US4532456 Output circuit for an electronic ballast system
07/23/1985US4531078 Control circuit for electronic flash
07/23/1985US4530550 Power supply unit for electronic flash
07/23/1985CA1190961A1 Electronic device for the starting and a.c.voltage operation of a gas and/or vapour discharge lamp
07/17/1985EP0148754A2 Electrical circuit for providing input electrical signals to a gas filled electrical discharge device
07/16/1985US4529914 High intensity discharge lamp ignition system
07/16/1985US4529913 Device for controlling the light intensity of a fluorescent tube fed from a D.C. voltage
07/16/1985US4529912 Mechanism and method for controlling the temperature and light output of a fluorescent lamp
07/16/1985CA1190588A1 Dual cathode beam mode fluorescent lamp
07/16/1985CA1190587A1 Single electrode beam mode fluorescent lamp for dc use
07/10/1985EP0147922A1 Ballast circuits for lighting units
07/10/1985EP0147881A1 Electrical device for igniting and supplying a gas- and/or vapour discharge lamp
07/10/1985EP0147722A2 A high voltage system for an x-ray tube
07/09/1985US4528482 Control of energy to fluorescent lighting
07/09/1985US4527552 Endoscope apparatus