CN2312555Y

CN2312555Y - Electronic ballast for fluorescent lamp

Info

Publication number: CN2312555Y
Application number: CN 97242577
Authority: CN
Inventors: 郭建军
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-11-05
Filing date: 1997-11-05
Publication date: 1999-03-31
Anticipated expiration: 2007-11-05

Abstract

The utility model provides an electronic ballast for fluorescent lamps. The utility model is characterized in that the electronic ballast is composed of an inductor L, two capacitors C< 1 > and C< 2 >, four rectifier diodes D< 1 >, D< 2 >, D< 3 >, and D< 4 >, and a fuse FU. The utility model has the advantages of simple structure, high stability, electricity saving, and no fault. The utility model can be used for restoring normal operation of waste fluorescent lamps particularly.

Description

The sight lamp electronic ballast

The utility model relates to a kind of electric ballast. relate more specifically to electronic ballast for fluorescent lamp.

Present commercially available electric ballast, a multitude of names generally all adopts the high-frequency self-excitation vibration, by resonant circuit, makes the fluorescent tube two ends obtain high-frequency and high-voltage and build-up of luminance work.This unreliable products performance is difficult for build-up of luminance during power network fluctuation, used element is impacted by instantaneous large-current easily and damages, and useful life is low, is difficult for promoting.

The utility model is at above-mentioned weak point, provide a kind of simple in structure, cost is low, good stability still can build-up of luminance work under the low pressure condition of alternating current 160-180 volt, can also prolong the useful life of fluorescent tube.

The technical solution of the utility model is achieved in that electronic ballast for fluorescent lamp, comprising: housing, electric ballast, fluorescent tube.Electric ballast places in the housing, and its input and alternating current join for 220 volts, and output and fluorescent tube two ends join.It is characterized in that: electric ballast is by inductance L, two capacitor C 1, C2, four rectifier diode D1, D2, D3, D4, and fuse FU forms; The end that one end of inductance L and alternating current are 220 volts joins, the other end of inductance L respectively with two capacitor C 1, the end of C2, the anode of rectifier diode D1, the negative terminal of rectifier diode D2 joins, the negative terminal of rectifier diode D1 respectively with the other end of capacitor C 1, the negative terminal of rectifier diode D3, one end of fluorescent tube joins, the anode of rectifier diode D2 respectively with the other end of capacitor C 2, the anode of rectifier diode D4, the other end of fluorescent tube joins, the anode of rectifier diode D3 respectively with the negative terminal of rectifier diode D4, the end of fuse FU joins, the other end that another termination alternating current of fuse FU is 220 volts.

The utility model is owing to take such scheme: have that the build-up of luminance electric current is little, build-up of luminance speed is fast, promptly open promptly bright, and energy-conservationly reach 25%, because the utility model is that short circuit uses to the filament at fluorescent tube two ends, its great advantage is: the waste and old fluorescent tube of the filament that broken also can use, and will bring improvement to the production of existing fluorescent tube thus, has both simplified the fluorescent tube manufacture craft, reduced production cost again, be worthy to be popularized.

The utility model is described in further detail with embodiment with reference to the accompanying drawings below.

Fig. 1 is an electrical schematic diagram of the present utility model

According to shown in Figure 1, operation principle of the present utility model is such: when alternating current a end is timing, electric current is through inductance L, capacitor C 2, and rectifier diode D4, fuse FU get back to the b end, give the two ends charging of capacitor C 2; When alternating current b end is timing, electric current is through fuse FU, rectifier diode D3, and capacitor C 1, inductance L are got back to a end, give the two ends charging of capacitor C 1; Superposeed at the two ends of series capacitance C1 and the C2 so high pressure of about 600V is enough to make the disposable build-up of luminance success in fluorescent tube two ends.Behind fluorescent lamp pipe build-up of luminance, in normal operation, alternating current a end is timing, its electric current is through inductance L, rectifier diode D1, fluorescent tube C end, fluorescent tube d end, rectifier diode D4, fuse FU holds to alternating current b: when alternating current b end is timing, its electric current is through fuse FU, rectifier diode D3, fluorescent tube C end, fluorescent tube d end, rectifier diode D2, inductance L is to alternating current a end.

According to shown in Figure 1, the utility model provides the component data of 40W sight fluorescent tube; The number of turns of inductance L is 1400 circles. its inductance value is 10 henries, and the enamelled wire diameter is 0.4 millimeter, and when the fluorescent tube below the use 40W, its core dimensions and enamelled wire diameter should be done corresponding reducing, and this inductance L also can replace with commercial ballasts.Inductance L is made path usefulness when the fluorescent tube build-up of luminance, when fluorescent tube is worked, play metering function.

Rectifier diode D1-D4 is 1N4007, and its back-pressure is 1000V, and forward current is 1A, and forward voltage drop is 1.1V.Capacitor C 1 and C2 are the noninductive electric capacity of CBB, and its capacity is 1.5 microfarads, and withstand voltage is 400V, and fuse FU is 1A.As long as said elements meets the requirements, all can substitute.

Fluorescent tube c, d two ends respectively have two filaments to draw nail, but the short circuit use also can singly connect use, also can recover to use to waste and old fluorescent tube.

The whole elements of the utility model are installed in the rectangular plastic casing, and the two ends of its housing respectively have two leads to draw, and connect alternating current 220V and fluorescent tube two ends plug pin respectively, and connection is very easy.

Claims

1. electronic ballast for fluorescent lamp, comprise: housing, electric ballast, fluorescent tube: electric ballast places in the housing, its input and alternating current join for 220 volts, output and fluorescent tube two ends join: it is characterized in that: electric ballast is by inductance (L), two electric capacity (C1, C2), four rectifier diodes (D1, D2, D3, D4), fuse (FU) is formed; The end that one end of inductance (L) and alternating current are 220 volts joins, the other end of inductance (L) respectively with two electric capacity (C1, C2) a end, the anode of rectifier diode (D1), the negative terminal of rectifier diode (D2) joins, the negative terminal of rectifier diode (D1) respectively with the other end of electric capacity (C1), the negative terminal of rectifier diode (D3), one end of sight fluorescent tube joins, the anode of rectifier diode (D2) respectively with the other end of electric capacity (C2), the anode of rectifier diode (D4), the other end of fluorescent tube joins, the anode of rectifier diode (D3) respectively with the negative terminal of rectifier diode (D4), one end of fuse (FU) joins, the other end that another termination alternating current of fuse (FU) is 220 volts.