Matches 1 - 42 out of 42


Match Document Document Title
8884537 Active bleeder circuit triggering TRIAC in all phase and light emitting device power supply circuit and TRIAC control method using the active bleeder circuit  
The present invention discloses an active bleeder circuit capable of triggering a tri-electrode AC switch (TRIAC) circuit in all phase. The active bleeder circuit receives a rectified signal...
8860312 Light emitting diodes driven by high intensity discharge ballast  
A method for using an electronic ballast circuit configured to operate a high intensity discharge (HID) lamp. Multiple light emitting diodes (LEDs) are attached to the current output of the...
8044599 Light string with alternate LED lamps and incandescent lamps  
In one embodiment an electrical circuit for use as a string of lights includes a load comprising a plurality of lamps connected in series, the lamps comprising a first group of lamps including an...
6636003 Apparatus and method for adjusting the color temperature of white semiconduct or light emitters  
An LED arrangement which produces a color temperature adjustable white light. The LED arrangement includes one or more white LEDs and a first drive circuit operable to supply a first drive current...
6617803 String of electrically powered ornaments  
A string of electrically powered ornaments such as lights connected in a series and sequentially identifiable indicia is applied sequentially in association with each ornament in the string to...
5886423 Electric series circuit  
An electric series circuit with plural loads such as light bulbs connected in series and plural solid state switching devices, with each switching device connected in parallel with one of the...
5345149 Lighting system with fluorescent and incandescent lamps  
A lighting system using a 120 volt AC power source and including within a single enclosure a low wattage fluorescent lamp and a low wattage incandescent lamp. The fluorescent lamp provides an...
RE34717 Light string ornament circuitry  
A decorative device is disclosed which includes 9 an electromechanical device, music module or other electrical loads combinations of such devices and electrical circuitry and a connector for...
5277948 Action ornament for use with decorative light string sets  
A mobile decorative part of a Christmas tree ornament is orbited around a stationary decorative part by an electrical motor locked onto the stationary decorative part.
5015918 Bicycle single-wire lighting system with steady-flashing-reflector rear warning device  
Red LEDs having sufficient brightness and efficiency are employed for a bicycle tail lamp. A xenon strobe provides extended visibility over the steady red LED beam, identifiable as a vehicle tail...
5012157 Long-life luminaires  
There is provided a luminaire primarily for use with exit signs and other emergency-type lighting comprising a series string of low-voltage, extremely long-life bulbs positioned within an...
4694224 Lighting apparatus for an electric discharge lamp  
A lighting apparatus for an electric discharge lamp includes a lighting ballast capacitor connected in series to an electric dicharge lamp for stabilizing a lighting current to the lamp; a...
4626745 Ballast circuit for lamps with low voltage gas discharge tubes  
A ballast circuit arrangement for providing a predetermined desired A.C. voltage to enhance the operation of the gas discharge tube serving as the main light source in a lighting unit of the type...
4555647 Ballast circuit for gas discharge tubes utilizing time-pulse additions  
Ballast circuits for a gas discharge tube are disclosed. One embodiment of a single-phase non-inductive ballast for operation of a gas discharge tube by direct current (D.C.) using a resistive...
4536680 Resistive lamp ballast with re-ignition circuit  
A discharge lamp is provided with a resistive ballast together with means for sensing lamp voltage conditions. If the lamp voltage exceeds a predetermined threshold then a control circuit operates...
4494041 Incandescent ballast assembly  
Apparatus for use with a fluorescent lamp having a longitudinal axis and a filament winding at each end includes a pair of terminals formed for connection to a potential source with means for...
4471268 Lighting unit having power supply with improved switching means  
An energy efficient lighting unit is described designed for functional similarity to the incandescent light used in the home. The lighting unit utilizes a metal vapor arc lamp as the main source...
4438369 Unitary light source comprising compact HID lamp and incandescent ballast filament  
Unitary light source comprises compact HID lamp and starting and operating circuit therefor operable from household AC energizing potential. The HID lamp is ballasted by incandescent filament...
4367432 Blended lamp  
In a blended lamp, an incandescent filament and a high-pressure discharge tube are arranged electrically in series. The filament forms part of a halogen incandescent lamp and the discharge tube...
4350929 Fluorescent lighting device  
A fluorescent lighting device which includes a preheating type fluorescent discharge tube and as the ballast thereof an incandescent bulb. The fluorescent lighting device is ignited by the use of...
4316124 Mixed light arrangement  
The invention relates to a mixed light lamp arrangement intended to be connected to an a.c. power supply. The lamp arrangement comprises a rectifier bridge having output terminals interconnected...
4297616 Fluorescent lamp with incandescent ballasting systems  
Ballasting for a fluorescent lamp is provided by one or more incandescent lamps connected in series between the line voltage source and the fluorescent lamp. Lamp operation is initiated by a...
4268780 Integrated fluorescent-incandescent lamp assembly  
A lamp assembly (10) comprises a base plate (12) having both an incandescent bulb (18) and a fluorescent bulb (16) affixed thereto. The incandescent bulb (18) acts as ballast and light source. A...
4224570 Engine speed indicator  
An engine rpm sensor utilizes a gas filled lamp for connection to a circu including an engine ignition system and a spark plug. A light pipe is exposed to the lamp and couples an optical signal...
4211958 Phantom fluorescent lamp with safety switch  
A safe "phantom" lamp structure for replacing a fluorescent lamp in a two-lamp series circuit connected fluorescent fixture which permits the remaining lamp of the two-lamp fixture to operate. The...
4100462 Combination incandescent/fluorescent lighting system  
A combination incandescent/fluorescent lighting system is shown that gives an efficient, high quality light. An incandescent lamp in series with the fluorescent lamp is used as a ballast. An...
3956665 Device for replacing a fluorescent lamp in a serially connected fluorescent lamp system  
A device for replacing a fluorescent lamp in a two lamp serially connected fluorescent fixture either of the type which includes a rapid-start type transformer for every two rapid-start...
3940659 Discharge device control circuit including a thyristor  
A main capacitor is connected across a series combination of a flash discharge lamp and a thyristor to flash the flash discharge lamp through the thyristor in its ON state. A commutation circuit...
3527982 DISCHARGE LAMP BALLASTING  
3449630 MODULATION OF ARC LAMP  
3445719 METAL VAPOR LAMP WITH METAL ADDITIVE FOR IMPROVED COLOR RENDITION AND INTERNAL SELF-BALLASTING FILAMENT USED TO HEAT ARC TUBE  
3416031 Flash lamp operating means  
3262010 Electrical display apparatus incorpolrating electroluminescent and gas discharge devices  
3213319 Spark discharge machining apparatus with means for clearing short-circuit fusions  
3179794 Device for simultaneously producing luminous and sterilizing radiations  
3141994 Series filament circuit failure indicator  
3127539 Novelty illumination device  
2967976 Blinking light arrangement  
2947910 Wide range electronic sweep circuit  
2813229 Method of excitation for electroluminescent material  
2811671 Electric discharge lamps  
2787732 Constant current regulator system  

Matches 1 - 42 out of 42