CN201690667U

CN201690667U - High-frequency ballast for energy-saving lamp

Info

Publication number: CN201690667U
Application number: CN201020177412XU
Authority: CN
Inventors: 李守运; 郭修; 吕战会
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-05
Filing date: 2010-04-05
Publication date: 2010-12-29
Anticipated expiration: 2020-04-05

Abstract

The utility model discloses a novel energy-saving lamp high frequency ballast, including filter circuit, rectifier circuit, feedback loop, fluorescent tube, inductance L3, electric capacity C4 and chip IC, filter circuit's input connects on alternating current power supply, and its output connects on rectifier circuit's input, rectifier circuit's output connects at chip IC's a pair of input, connects at feedback circuit's input after inductor L3 and fluorescent tube concatenate in proper order chip IC's an output, and feedback circuit's output connects on rectifier circuit's input, resonance electric capacity C4 connects in parallel at the fluorescent tube both ends. The utility model discloses a ballast adopts the frequency sweep mode to start the fluorescent tube, has avoided the high-pressure of traditional ballast to start, makes the filament receive high-pressure impact and causes the problem of the short and lamp filament of life and electron powder light shot injury when high-pressure starts, has prolonged the life of lamp filament and electron powder.

Description

Novel energy-conserving lamp high frequency ballast

Technical field

The utility model relates to a kind of high frequency ballast, particularly a kind of novel energy-conserving lamp high frequency ballast.

Background technology

Ballast is as the light fixture starting component, and the application of electricity-saving lamp is played crucial effects.At present, most of ballasts all are to adopt high voltage to start to electricity-saving lamp, and filament is subjected to impacting with high pressure to cause damage easily, and shortened the useful life of light fixture.Chinese patent ZL200820103284.7 discloses a kind of ballast of electronic resonance fluorescent lamp, comprises electronic circuit and resonance energy source reactor circuit.Described electronic circuit and resonance energy source reactor circuit mainly are made up of power filter DC circuit, circuit of power factor correction, tuning oscillator-amplification circuit, abnormity protection circuit and resonant reaction device circuit; described resonance energy source reactor circuit be non-magnetic conductive metal at a certain distance on rectangular form height magnetic, the load that described rectangular form height magnetic is the described tuning oscillator-amplification circuit that shakes.This ballast provides a kind of magnetic field intensity height, can make falling property gas in the fluorescent tube at electronic energy with activated phosphor under the physical resonant vibration, make gas independent of each other and phosphor molecule group moment that organically blends produce light.Its main feature: air tight without filament, fluorescent tube, lamp tube service life is with regard to endless.Under the high strength power conversion, can light several fluorescent tubes simultaneously, so can be more than the power saving 80-90%.But it is subjected to the influence of devices such as magnet ring, and is not so good to the pardon of light fixture, and energy-saving effect has much room for improvement.

The utility model content

Thereby the utility model adopts the warm start mode to the short shortcoming of life-span that electricity-saving lamp impacts and makes lamp in order to overcome existing ballast, and a kind of novel energy-conserving lamp high frequency ballast that uses simple in structure, convenient is provided.

The utility model can be achieved by taking following technical scheme:

A kind of novel energy-conserving lamp high frequency ballast, comprise filter circuit, rectification circuit, feedback loop, fluorescent tube, inductance L 3, capacitor C 4 and chip IC, the input of described filter circuit is connected on the AC power, its output is connected on the input of rectification circuit, the output of described rectification circuit is connected on a pair of input of chip IC, one output of chip IC is connected on the input of feedback circuit successively behind tandem electric inductance L3 and the fluorescent tube, the output of feedback circuit is connected on the input of filter circuit, and described capacitor C 4 is attempted by the two ends of fluorescent tube.

On the basis of the above, inductance L 3 described in the utility model has adopted opposite side to open air gap and has also formed with the coiling of multiply silk-covered wire, has reduced the high-frequency loss of inductance L 3 and has reduced its temperature rise, thereby increased the reliability of complete machine; The operating frequency that the natural frequency of described chip IC and fluorescent tube is complementary is 100KHz～500KHz; Described rectification circuit adopts full bridge rectifier; Described filter circuit is made of inductance L 1, inductance L 2 and capacitor C 1, described capacitor C 1 is attempted by on the power input, one end of inductance L 1 and inductance L 2 is connected on the two ends of capacitor C 1 respectively, the other end is connected on respectively on the two ends of input of rectification circuit, and power input voltage is carried out the filtering interfering clutter; Described feedback circuit is made of capacitor C 2 and capacitor C 3, described capacitor C 2 and capacitor C 3 serial connection backs and at the input of rectification circuit, and the tie point of capacitor C 2 and capacitor C 3 is connected on the end of fluorescent tube, will be fed back to by the high frequency waves that chip IC produces in the electrical network circuit.

Compared with prior art, the utlity model has following advantage:

One, ballast of the present utility model starts fluorescent tube by chip generation high frequency waves in the frequency sweep mode, the warm start of having avoided traditional ballast makes filament be subjected to impacting with high pressure and cause short and filament and the shallow problem of penetrating that injures of electronics powder in useful life when high voltage startup, has prolonged the useful life of filament and electronics powder.

Two, ballast of the present utility model is under husband's effect effect that becomes of high frequency, make its generation greater than the high-frequency current of 100KHz to the arousal effect of fluorescent material the effect that electricity-saving lamp reached much larger than general 30KHz.

Three, ballast of the present utility model adopts the doube bridge feedback circuit that the capacitance bridge of high frequency waves through capacitor C 2, capacitor C 3 compositions fed back in the electrical network circuit, the efficient of whole ballast is greatly improved, thereby the power factor (PF) that makes lamp is up to more than 99%, and harmonic wave is also less than 10%.

Four, inductance L 3 of the present utility model has adopted opposite side to open air gap and has used the coiling of multiply silk-covered wire, has reduced the high-frequency loss of inductance L 3 and has reduced its temperature rise, thereby increased the reliability of complete machine.

Five, the operating frequency of whole fluorescent tube of the present utility model can be regulated, and makes it not be subjected to influence at devices such as magnet rings, has strengthened ballast to fluorescent tube characteristic pardon.

Description of drawings

Fig. 1 is the structured flowchart of novel energy-conserving lamp high frequency ballast of the present utility model.

Fig. 2 is the circuit structure diagram of novel energy-conserving lamp high frequency ballast of the present utility model.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.

As Fig. 1, shown in Figure 2, novel energy-conserving lamp high frequency ballast of the present utility model, comprise filter circuit 1, rectification circuit 2, feedback loop 3, fluorescent tube 4, inductance L 3, capacitor C 4 and chip IC 5, the input of described filter circuit 1 is connected on the AC power, its output is connected on the input of rectification circuit 2, the output of described rectification circuit 2 is connected on a pair of input of chip IC 5, one output of chip IC 5 is connected on the input of feedback circuit 3 successively behind tandem electric inductance L3 and the fluorescent tube 4, the output of feedback circuit 3 is connected on the output of filter circuit 1, and described capacitor C 4 is attempted by the two ends of fluorescent tube 4.

On the basis of the above, inductance L 3 described in the utility model has adopted opposite side to open air gap and has also formed with the coiling of multiply silk-covered wire, has reduced the high-frequency loss of inductance L 3 and has reduced its temperature rise, thereby increased the reliability of complete machine; The operating frequency that the natural frequency of described chip IC 5 and fluorescent tube 4 is complementary is 100KHz～500KHz; Described rectification circuit adopts full bridge rectifier, and described chip IC adopts the chip of built-in MOS, as UBA2024T etc., makes its operating frequency also can reach the identical 100KHz-500KHz of natural frequency of fluorescent tube; Described filter circuit is made of inductance L 1, inductance L 2 and capacitor C 1, described capacitor C 1 is attempted by on the power input, one end of inductance L 1 and inductance L 2 is connected on the two ends of capacitor C 1 respectively, the other end is connected on respectively on the two ends of input of rectification circuit, and power input voltage is carried out the filtering interfering clutter; Described feedback circuit is made of capacitor C 2 and capacitor C 3, described capacitor C 2 and capacitor C 3 serial connection backs and at the input of rectification circuit, the tie point of capacitor C 2 and capacitor C 3 is connected on the end of fluorescent tube, will be fed back in the electrical network circuit by capacitor C 2 and capacitor C 3 behind fluorescent tube by the high-frequency current that chip IC produces.

The course of work of the present utility model is as follows: when the ballast energized is started working, voltage carries out the filtering interfering clutter through filter circuit, after carrying out rectification, rectification circuit is sent to the chip IC place, chip IC generates high frequency square wave by its clock circuit and promotes metal-oxide-semiconductor and produce high-frequency current fluorescent tube of flowing through and make fluorescent tube shinny, simultaneously through fed back to the front end of ac power input end and rectifier bridge behind the resonant capacitance C4 by feedback capacity C2, capacitor C 3.In this process, chip produced 4KHz before this and to the high-frequency electric wave of 200KHz fluorescent tube was carried out frequency sweep, got back to the fluorescent tube natural frequency to equate after this high-frequency electric wave is puncturing argon gas in the fluorescent tube, made fluorescent tube conducting and then luminous.Because returning the voltage of the contact of capacitor C 2 and capacitor C 3 is high frequency voltage, the power-frequency voltage of this high frequency voltage and power input forms the loop, its high-frequency current is controlled by the power frequency input voltage of external power grid 50HZ, make the input current and the input voltage of whole circuit for lamp synchronous, so this circuit has very high power factor and minimum harmonic distortion.

Claims

1. A novel high-frequency ballast for energy-saving lamps, comprising a filter circuit (1), a rectifier circuit (2), a feedback loop (3), a lamp tube (4), an inductor L3, a capacitor C4 and a chip IC (5), It is characterized in that the input terminal of the filter circuit (1) is connected to the AC power supply, the output terminal thereof is connected to the input terminal of the rectification circuit (2), and the output terminal of the rectification circuit (2) is connected to the chip IC (5 ), an output terminal of the chip IC (5) is connected to the input terminal of the feedback circuit (3) after the inductance L3 and the lamp tube (4) are connected in series, and the output terminal of the feedback circuit (3) is connected to the filter On the output end of the circuit (1), the capacitor C4 is connected in parallel to both ends of the lamp tube (4).

2. The new high-frequency ballast for energy-saving lamps according to claim 1, characterized in that the inductor L3 is formed with an air gap on opposite sides and is wound with multi-strand wire-wrapped wires.

3. The new high-frequency ballast for energy-saving lamps according to claim 2, characterized in that the operating frequency of the chip IC (5) matching the natural frequency of the lamp tube (4) is 100KHz-500KHz.

4. The new high-frequency ballast for energy-saving lamps according to claim 3, characterized in that the filter circuit (1) is composed of an inductor L1, an inductor L2 and a capacitor C1, and the capacitor C1 is connected in parallel to the input terminal of the power supply , one end of the inductance L1 and the inductance L2 are respectively connected to the two ends of the capacitor C1, and the other ends are respectively connected to the two ends of the input end of the rectifier circuit.

5. The novel energy-saving lamp high-frequency ballast according to claim 4, characterized in that the rectification circuit (2) adopts a full-bridge rectification circuit.

6. The novel energy-saving lamp high-frequency ballast according to any one of claims 1 to 5, characterized in that the feedback circuit (3) is composed of a capacitor C2 and a capacitor C3, and the capacitor C2 and capacitor C3 are connected in series After being connected and at the input end of the rectifier circuit, the connection point of the capacitor C2 and the capacitor C3 is connected to one end of the lamp tube.