Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Lighting circuit for electric discharge lamp










Image Number 15 for United States Patent #4544862.

A lighting circuit for an electric discharge lamp according to the present invention is constructed in such a way that a switching device is provided at an output terminal of a high frequency inverter which produces a substantially sinusoidal output voltage, and that, by controlling this switching device, an output to the low pressure electric discharge lamp is stopped at the rising part of the abovementioned output voltage in its half cycle, while the output is supplied to the low pressure electric discharge lamp at the voltage level in the vicinity of the maximum instantaneous value thereof. By use of the high frequency inverter of a smaller capacity and less radio noise than those in the conventional device, the operating efficiency of the low pressure electric discharge lamp can be increased.








 
 
  Recently Added Patents
Telephone relaying apparatus, telephone relaying method, and program
Rotation angle detecting device
Synchronization processing circuit and synchronization processing method in wireless communication system
Over the counter medicinal container with surface ornamentation
Method for treating wounds for mammals, wound healer compound, and method of manufacturing thereof
Engineered magnetic layer with improved perpendicular anisotropy using glassing agents for spintronic applications
Web-based system and method for video analysis
  Randomly Featured Patents
Expandable door frame, kit, and method of installation
Method for making metallized capacitor having increased dielectric breakdown voltage
Semiconductor device including fuses for relieving defective areas
Method for authenticating a spare key for using a vehicle
Polyvinyl chloride/copolyester compositions
Crosslinked, hydrophilic rods of pyrrolidone-methacrylate graft copolymers
Protocol for allocating upstream slots over a link in a point-to-multipoint communication system
Proactive method for ensuring availability in a clustered system
Selective formatting of blocks of text codes in a memory of a word processing system
Multiple pass and multiple layer friction stir welding and material enhancement processes