CN2201767Y

CN2201767Y - High power factor electronic energy-saving lamp

Info

Publication number: CN2201767Y
Application number: CN 94223488
Authority: CN
Inventors: 陈平
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-10-14
Filing date: 1994-10-14
Publication date: 1995-06-21
Anticipated expiration: 2004-10-14

Abstract

The utility model provides a high power factor electronic energy-saving lamp, which comprises an antijamming circuit, a bridge rectifier circuit, an oscillation excitation circuit, a starting capacitor and a lamp tube. A parallel type resonant capacitor is joined between the connection point of the resonant circuit capacitance output end of the oscillation exciting circuit and the filament of the lamp tube to the positive output end of the rectifying diode of the bridge rectifier circuit and the connection point of the emitter of the oscillation tube. The utility model saves a large capacity filtering capacitor than that of the existing electronic energy-saving lamp, and the electrical leakage, the volume and the cost are reduced. The utility model is beneficial to improving the anti high voltage performance of the energy-saving lamp, and the utility model has the advantages of power utilization increase, energy saving and service life of a lamp tube improvement.

Description

High power factor electronic energy-saving lamp

The utility model relates to a kind of circuit arrangement that is used for discharge lamp igniting or control.

Various electronic energy-saving lamp is widely used, and its power factor is generally all between 0.5～0.6.Improve the power factor of electronic energy-saving lamp, for energy-conservation and raising electrical network utilance very big benefit is arranged all, for example a 10W electronic energy-saving lamp if power factor only is, then needs power consumption stream to be 82.6mA at 0.55 o'clock; But power factor increases at 0.92 o'clock, then needs power consumption stream obvious for 49.4mA., and improving power factor is the key of electronic energy-saving lamp development.For this reason, researched and developed many power factor controllers both at home and abroad, various chips and circuit have occurred, but all belonged to active filter, circuit structure is comparatively complicated, the failure rate height, and cost obviously improves.The for example TDA4814 of Siemens, TDA4816, TDA4817; MC34261 that the SG3561A of U.S. Slicon General company and other company produce and KA7514 etc.

The CN87212090 patent disclosure a kind of electric ballast, comprise bridge rectifier, filter circuit, vibratory stimulation circuit, and by sealing in diode at emitter circuit, secondary and connect diode and resistance with driving transformer in base loop, reach the purpose of economize on electricity and low-voltage starter.

In addition, behind rectification circuit, insert filter capacitor usually, increased the electric leakage and the volume of ballast.

The purpose of this utility model aims to provide a kind of improved high-power factor electronic electricity-saving lamp.

The utility model comprises anti-jamming circuit, bridge rectifier, vibratory stimulation circuit, starts electric capacity and fluorescent tube, it is characterized in that between the tie point of the rectifier diode cathode output end of bridge rectifier and oscillating tube emitter, connecing a parallel resonant capacitance at the tie point of the resonant tank electric capacity output of vibratory stimulation circuit and tube filament, its capacitance is 47～56n, is preferably 47～50n.

The utility model saves the big capacity filter capacitor after the rectification in the existing electronic energy-saving lamp, reduces its volume, electric leakage and cost.Utilize the inductance type anti-jamming circuit, the elimination low-frequency disturbance, power conditioner also helps improving the anti-high voltage capability of electricity-saving lamp.Simultaneously between the tie point of the rectifier diode cathode output end of bridge rectifier and oscillating tube emitter, connect a parallel resonant capacitance at the tie point of the resonant tank electric capacity output of vibratory stimulation circuit and tube filament, improve the available power of power supply effectively, both save the energy, prolonged the life-span of fluorescent tube again.

Fig. 1 is the utility model circuit theory diagrams.

As shown in Figure 1, the utility model comprises anti-jamming circuit L ₁, bridge rectifier D ₁～D ₄, vibratory stimulation circuit, fluorescent tube T and start capacitor C ₅The vibratory stimulation circuit adopts two-tube Q ₁, Q ₂, resonance output loop (C ₃, L ₂, B ₁Deng) output connect the filament of fluorescent tube T, at C ₃Output and oscillating tube Q ₂Emitter between meet parallel resonant capacitance C ₄, value is 47～56n, preferably gets 47～50n.

Claims

1, high-power factor electronic electricity-saving lamp, comprise anti-jamming circuit, bridge rectifier, vibratory stimulation circuit, start electric capacity and fluorescent tube, it is characterized in that connecing a parallel resonant capacitance at the tie point of the resonant tank electric capacity output of vibratory stimulation circuit and tube filament between the tie point of the rectifier diode cathode output end of bridge rectifier and oscillating tube emitter, its capacitance is 47～56n.

2, high-power factor electronic electricity-saving lamp as claimed in claim 1 is characterized in that be 47～50n at the tie point of the resonant tank electric capacity output of vibratory stimulation circuit and tube filament to the parallel resonant capacitance that is connect between the tie point of the rectifier diode cathode output end of bridge rectifier and oscillating tube emitter.