| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
|---|
| 07/24/1984 | US4461982 High-pressure metal vapor discharge lamp igniter circuit system |
| 07/24/1984 | US4461980 Protection circuit for series resonant electronic ballasts |
| 07/24/1984 | US4461976 Discharge lamp starter |
| 07/19/1984 | WO1984002825A1 Electronic ballast and lighting system utilizing it |
| 07/18/1984 | EP0113451A1 Inverter with a load circuit comprising a series resonant circuit and a discharge lamp |
| 07/18/1984 | EP0113385A1 Ballast stabilizer for discharge lamps and lighting circuit using the same |
| 07/17/1984 | US4460849 Device for regulating the power in electrical apparatuses, especially in fluorescent lighting fittings |
| 07/17/1984 | US4460848 Starter circuit for a low pressure discharge lamp |
| 07/17/1984 | CA1171131A1 Lamp circuit |
| 07/10/1984 | US4459653 Apertured transformer and inverter using same |
| 07/10/1984 | US4459516 Circuit for driving a load |
| 07/10/1984 | US4459515 Phase-controlled ballast having shifting control |
| 07/10/1984 | CA1170707A1 Device for regulating the power in electrical apparatus especially in fluorescent lighting fittings |
| 07/04/1984 | EP0050131B1 Ballast for a discharge lamp |
| 07/03/1984 | US4458181 Lead-type ballast apparatus with improved power factor for operating a high-intensity-discharge sodium lamp |
| 06/27/1984 | EP0111956A1 Circuit arrangement for operating high-pressure discharge lamps |
| 06/27/1984 | EP0111929A1 Arrangement for switching off an inverter |
| 06/26/1984 | US4456857 Socket with automatic high voltage cut-off |
| 06/26/1984 | US4456855 Intensity regulator, especially a light regulator |
| 06/20/1984 | EP0111373A1 Circuit arrangement for starting and operating high pressure gas discharge lamps |
| 06/20/1984 | EP0111296A1 Device for controlling the intensity of a low pressure discharge lamp |
| 06/19/1984 | US4455510 High intensity discharge ballast with hot restrike performance |
| 06/19/1984 | US4455509 Intrinsically safe lighting system |
| 06/19/1984 | CA1169484A1 Direct current to alternating current converter |
| 06/12/1984 | US4454574 Push-pull stored charge inverter circuit with rapid switching |
| 06/05/1984 | US4453110 Strobo flash apparatus |
| 05/29/1984 | US4451772 Passive clamp for on/off control of a capacitor charger |
| 05/29/1984 | US4451767 Temperature sensitive ballast circuit for a fluorescent lamp |
| 05/29/1984 | US4451765 Resonance lamp |
| 05/23/1984 | EP0108815A1 High-frequency circuit for gas discharge paths |
| 05/22/1984 | US4450506 Automatic light-quantity-control speed light |
| 05/22/1984 | US4450385 Inductive ballasting of direct current gas discharges |
| 05/22/1984 | US4450383 Electric arrangement for starting and supplying a low-pressure discharge lamp |
| 05/22/1984 | CA1167974A1 Method and apparatus for starting high intensity discharge lamps |
| 05/22/1984 | CA1167973A1 Low energy starting aid for high intensity discharge lamps |
| 05/22/1984 | CA1167902A1 Frequency converter for supplying an electrodeless discharge lamp |
| 05/16/1984 | EP0108122A1 Flash lamp and circuitry for use with an incandescent light |
| 05/08/1984 | US4447766 Supply device for a flash tube |
| 05/08/1984 | US4447763 Discharge lamp lighting device |
| 05/08/1984 | US4447759 Starter for igniting an electric discharge tube |
| 05/08/1984 | US4447549 Non-linear dielectric element |
| 05/02/1984 | EP0107019A2 Lamp, in particular a signalling lamp for water-borne vehicles |
| 04/25/1984 | EP0105877A1 Pump for liquids and gases. |
| 04/24/1984 | USRE31567 Automatic control indication device in an automatic control type electronic flash unit |
| 04/24/1984 | US4445074 Starting circuits for discharge lamps |
| 04/24/1984 | US4444483 Control circuit for power supply associated with an electronic flash unit |
| 04/17/1984 | US4443740 Dimmer switch for a fluorescent lamp |
| 04/17/1984 | US4443739 Electric device comprising at least one low-pressure mercury vapor discharge tube |
| 04/11/1984 | EP0105230A2 Triggering and cooling apparatus for laser flashlamps |
| 04/10/1984 | US4442382 Constant power switching power supply |
| 04/10/1984 | US4442381 Auto strobe control circuit |
| 04/10/1984 | US4442380 Discharge tube firing device |
| 04/10/1984 | CA1165402A1 Irradiation device and removable timer useful therewith |
| 04/04/1984 | EP0105042A1 Starter device for discharge lamps |
| 04/04/1984 | EP0104687A1 Means for operating hid sodium lamp to minimize lamp voltage variation throughout lamp life |
| 04/04/1984 | EP0104408A2 Process and device for generating ultraviolet radiation |
| 04/04/1984 | EP0104397A2 Circuit to decrease the power consumption of a discharge lamp |
| 04/04/1984 | EP0104264A1 Adjustable electrical power control for gas discharge lamps and the like |
| 04/03/1984 | US4441087 High efficiency inverter & ballast circuits |
| 04/03/1984 | US4441056 High pressure sodium lamp ballast circuit |
| 04/03/1984 | US4441055 Lighting system |
| 04/03/1984 | US4441054 Stabilized dimming circuit for lamp ballasts |
| 03/27/1984 | CA1164521A1 Power supply arrangement for an optical apparatus |
| 03/20/1984 | US4438374 Control of electric discharge lamps for scanning purposes |
| 03/20/1984 | US4438372 Multiple low-pressure discharge lamp operating circuit |
| 03/20/1984 | US4438370 Lamp circuit |
| 03/20/1984 | US4438369 Unitary light source comprising compact HID lamp and incandescent ballast filament |
| 03/13/1984 | US4437043 Lighting control for high intensity discharge lamp |
| 03/13/1984 | US4437042 Starting and operating circuit for gaseous discharge lamps |
| 03/13/1984 | US4437040 Method of effecting stabilized dimming of fluorescent lamps |
| 03/07/1984 | EP0102183A2 Improvements relating to the starting of discharge lamps |
| 03/06/1984 | US4435670 Energy conserving instant-start series-sequence fluorescent lamp system with overcurrent protection |
| 03/06/1984 | CA1163320A1 Power supply device |
| 03/06/1984 | CA1163310A1 Thermal interruption switch for a gaseous discharge lamp auxiliary means |
| 02/28/1984 | US4434388 Electrical lighting controller |
| 02/21/1984 | US4433272 High-pressure discharge lamp |
| 02/21/1984 | CA1162594A1 Method and apparatus for starting high intensity discharge lamps |
| 02/21/1984 | CA1162593A1 Discharge lamp apparatus |
| 02/21/1984 | CA1162592A1 Portable fluorescent tube assembly having low voltage convenience outlet |
| 02/14/1984 | US4431948 Apparatus for control of load power consumption |
| 02/14/1984 | US4431947 Controlled light source |
| 02/14/1984 | US4431945 High pressure metal vapor discharge lamp |
| 02/14/1984 | CA1162322A1 Power supply for hid lamp |
| 02/14/1984 | CA1162235A1 Intermittent voltage supply device |
| 02/08/1984 | EP0099886A1 Emergency light |
| 02/07/1984 | US4430628 High efficiency inverter and ballast circuits |
| 02/07/1984 | US4430602 Electronic flash device |
| 02/01/1984 | EP0099474A1 Electronic drive circuit for a dischange lamp |
| 01/31/1984 | US4429356 Transistor inverter device |
| 01/18/1984 | EP0098285A1 Electronic high frequency controlled device for operating gas discharge lamps. |
| 01/17/1984 | US4426603 HPS Starting aid |
| 01/17/1984 | US4426143 Overexposure indicator for an automatic electronic flash |
| 01/10/1984 | US4425530 Time delay lamp ballast circuit |
| 01/04/1984 | EP0097450A1 Power supply circuit for an alkali vapor lamp |
| 01/03/1984 | USRE31486 Rapid starting of gas discharge lamps |
| 01/03/1984 | US4424468 Inverter ballast circuit with shoot through prevention, auto transformer coupling and overload prevention |
| 01/03/1984 | US4423950 Cleaning device for an electrophotographic reproducing machine |
| 01/03/1984 | CA1159895A1 Amorphous metal lamp ballast having a capacitor integral with the magnetic core |
| 01/03/1984 | CA1159894A2 Discharge lamp lighting device with a delayed-output oscillation circuit |
| 01/03/1984 | CA1159893A2 Discharge lamp lighting device with a delayed-output oscillation circuit |