CN2156651Y

CN2156651Y - Energy-saving electronic ballast for fluorescent lamp

Info

Publication number: CN2156651Y
Application number: CN 93233703
Authority: CN
Inventors: 李臣富
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-10
Filing date: 1993-04-10
Publication date: 1994-02-16
Anticipated expiration: 2003-04-10

Abstract

The utility model relates to an energy-saving electronic ballast for a daylight lamp, comprising a mounting box, the stabilizing resistance in an output positive end and a voltage doubling rectification circuit. The utility model is characterized in that two parallel branches composed of a resistance and a crystal diode are respectively connected in the branch circuits of a charge and discharge capacitors of the voltage doubling rectification circuit in series. The utility model has a marked effect of saving energy, compared with an inductance-type ballast and a general capacitor electronic ballast, respectively reduces energy consumption more than 35 precent and 60 percent, is capable of directly starting a daylight lamp tube, works without noises, has a high universality, prolongs the service life of a lamp tube and is economical and practical.

Description

Energy-saving electronic ballast for fluorescent lamp

The utility model relates to a kind of circuit arrangement of discharge lamp igniting, particularly a kind of daylight lamp energy-saving electric ballast.

At present, the ballast that is used for fluorescent lamp ignition trigger, work mainly contains inductance type ballast and capacitance voltage-multiplying type electric ballast.Inductance type ballast starts fluorescent tube also must have starter, and toggle speed is slower, and starting current is big, easily tube filament is blown, shorten fluorescent tube useful life, under voltage instability and the higher situation of voltage, ballast is easy to generate and exchanges cry, and the power consumption of ballast own is big.Though the capacitance voltage-multiplying type electric ballast can directly start fluorescent tube quickly, fluorescent tube gas in pipe for filament breaking just often also can start, ballast work noiseless, but be stable voltage by lamp tube current and lamp tube ends, need in tube circuit, be connected in series the resistance ballast resistance more than 100 Ω at least, otherwise serious scintillation will take place in fluorescent tube, and the power that the ballast resistance of serial connection consumes is big; Because its power output is subjected to the restriction of condenser capacity, the luminous flux that fluorescent tube sends does not often reach setting.

The purpose of this utility model is for overcoming above-mentioned weak point, and a kind of fluorescent tube that directly starts fast is provided, the work noiseless, and energy-saving effect is remarkable, highly versatile, the daylight lamp energy-saving electric ballast in prolonging lamp tube useful life.

Daylight lamp energy-saving electric ballast of the present utility model comprises ballast resistance and the voltage doubling rectifing circuit in mounting box, the output plus terminal, it is characterized in that being connected in series a parallel branch that is made of resistance, crystal diode respectively in the charge and discharge capacitance device branch road of voltage doubling rectifing circuit.

Fig. 1 is the utility model structure chart;

Fig. 2 is the utility model embodiment I circuit diagram;

Fig. 3 is the utility model embodiment II circuit diagram;

Fig. 4 is the utility model embodiment III circuit diagram;

Fig. 5 is the utility model embodiment IV circuit diagram;

Fig. 6 is an embodiment I printed circuit board (PCB).

Now illustrated embodiment is made detailed description to the utility model in conjunction with the accompanying drawings.

The embodiment I: as shown in Figure 2, crystal diode D ₁Negative pole, D ₂Anodal tie point is an end of power supply input, respectively at D ₁, D ₂Two ends and connecting resistance R ₁, R ₂, D ₁The anodal capacitor C that connects ₁One end, C ₁The other end also meets ballast resistance R ₃One end, rectifier diode D ₃Negative pole, D ₂Negative pole connects capacitor C ₂One end, C ₂The other end connects rectifier diode D ₄Positive pole, D ₃Anodal, D ₄The tie point of negative pole is the other end of power supply input, D ₄Anodal, R ₃The other end is respectively the tie point at fluorescent tube two ends.

The embodiment II: as shown in Figure 3, just with R ₁, D ₁, R ₂, D ₂Parallel branch change into respectively and be serially connected in C ₁, C ₂The rear end, other structures are the same with the embodiment I.

The embodiment III: as shown in Figure 4, crystal diode D ₁Anodal, D ₂The tie point of negative pole is an end of power supply input, respectively at D ₁, D ₂Two ends and connecting resistance R ₁, R ₂, D ₁Negative pole connects capacitor C ₁One end, C ₁The other end connects rectifier diode D ₃Positive pole, D ₂The anodal capacitor C that connects ₂One end, C ₂The other end also meets rectifier diode D ₄Negative pole, ballast resistance R ₃One end, D ₃Negative pole, D ₄Anodal tie point is the other end of power supply input, D ₃Anodal, R ₃The other end is respectively the tie point at fluorescent tube two ends.

The embodiment IV: as shown in Figure 5, just with R ₁, D ₁, R ₂, D ₂Parallel branch change into respectively and be serially connected in C ₁, C ₂The rear end, other structures are with the embodiment III.

In the foregoing description, D ₁～D ₄All select 1N4007 for use, R ₁: 36-56 Ω/3W R ₂: 18-45 Ω/3W R ₃: 12-20 Ω/5W C ₁=C ₂=6～8uF/400VAC can be 20W, 30W, the 40W fluorescent tube is supporting general.Each electronic component by welding shown in Figure 6 good after, be fixed in the mounting box, and draw electric power connection line.

The utility model is owing to adopt above design, D₁、D ₂For the voltage multiplying rectifier charge circuit provides the low impedance path, R₁、R ₂For lamp works provides the DC channel of capacitor discharge, simultaneously they have prolong discharge time, to reduce the effect of fluorescent tube flicker. Because R₁、R ₂Shunting action, R₃Resistance can greatly reduce, energy-saving effect is remarkable, with inductance type ballast relatively, cutting down the consumption of energy is 20W fluorescent tube 35%, 30W fluorescent tube 37%, 40W fluorescent tube 50%; With common capacitance electronic ballast relatively, cutting down the consumption of energy is 20W fluorescent tube 60%, 30W fluorescent tube 64%, 40W fluorescent tube 64%. Can directly start fast fluorescent tube, work noiseless, highly versatile, the advantages such as prolonging service life of lamp tube. Economical and practical.

Claims

1, a kind of daylight lamp energy-saving electric ballast comprises the ballast resistance R in mounting box, the output plus terminal ₃And voltage doubling rectifing circuit, it is characterized in that charge and discharge capacitance device C in voltage doubling rectifing circuit ₁, C ₂Be connected in series one in the branch road respectively by resistance R ₁, crystal diode D ₁, R ₂, D ₂The parallel branch that constitutes, D ₁Negative pole, D ₂Anodal tie point is an end of power supply input, respectively at D ₁, D ₂Two ends also meet R ₁, R ₂, D ₁The anodal C that connects ₁One end, C ₁The other end also meets R ₃One end, rectifier diode D ₃Negative pole, D ₂Negative pole connects C ₂One end, C ₂The other end connects rectifier diode D ₄Positive pole, D ₃Anodal, D ₄The tie point of negative pole is the other end of power supply input, D ₄Anodal, R ₃The other end is respectively the tie point at fluorescent tube two ends, after each electronic component welds, is fixed in the mounting box, and draws electric power connection line.

2, daylight lamp energy-saving electric ballast as claimed in claim 1 is characterized in that R ₁, D ₁, R ₂, D ₂Parallel branch also can be serially connected in C respectively ₁, C ₂The rear end.