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
Optoelectronic component and method for producing an optoelectronic component
System for programming domestic appliances and method for programming assembly-line programmable domestic appliances
Forming agent for gate insulating film of thin film transistor
Cooler
Fast and compact circuit for bus inversion
Semiconductor chip, stack module, and memory card
Polarized film apparatus with bands of alternating orientation
  Randomly Featured Patents
Forged atomic power plant parts
Cantilever-type probe card for high frequency application
Method and apparatus for graphic accessing of multiple software applications
Feminine sanitary protection package and method
Surgical scalpel with retractable guard
Programmable arbitration system for determining priority of the ports of a network switch
Paper dispenser containing a removable case
Negative amplitude polar transmitter
Coating composition and method of making same
Hydraulic drive train with energy dissipation for electricity generation