Resources Contact Us Home
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
Method for exchanging data concerning an electronic transaction
Nano-pigment inkjet ink composition that has a low odor and is environmentally-friendly
Package for product
Metal melting apparatus and method for melting metal
Semiconductor device and manufacturing method
Optical navigation device with image sensor and inner housing
Trash receptacle
  Randomly Featured Patents
Caching based on spatial distribution of accesses to data storage devices
Multi-wheel vehicle with transmission for driving-steering
Virus and particulate separation from solution
Quick disconnect boom mount
Data processor system clock checking system
Apparatus for simulating recoil in an imitation gun
Process for preparation of oxymethylene polymers in a homogeneous phase, and use
Venting device for hazardous material containers
Expandable catheter
Transition metal complexes in the controlled synthesis of polyolefins substituted with functional groups