CN201690667U

CN201690667U - Novel high-frequency ballast of 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 novel high-frequency ballast of an energy-saving lamp, which comprises a filter circuit, a rectification circuit, a feedback circuit, a tube, an inductor L3, a capacitor C4 and a chip IC. An input end of the filter circuit is connected to an alternating-current power supply, an output end of the filter circuit is connected to an input end of the rectification circuit, an output end of the rectification circuit is connected to one pair of input ends of the chip IC, an output end of the chip IC is sequentially serially connected with the inductor L3 and the tube and then connected to an input end of the feedback circuit, an output end of the feedback circuit is connected to the input end of the rectification circuit, and the resonant capacitor C4 is connected to two ends of the tube in parallel. The ballast adopts a frequency sweeping mode to start the tube, solves problems that high-voltage starting of the traditional ballast shortens service life of a lamp filament due to high voltage impact and the lamp filament and electronic powders are damaged by shallow emission during high-voltage starting, and then prolongs service lives of the lamp filament and the electronic powders.

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. novel energy-conserving lamp high frequency ballast, 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 that it is characterized in that 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).

2. novel energy-conserving lamp high frequency ballast according to claim 1 is characterized in that described inductance L 3 has adopted opposite side to open air gap and also formed with the coiling of multiply silk-covered wire.

3. novel energy-conserving lamp high frequency ballast according to claim 2 is characterized in that the operating frequency that the natural frequency of described chip IC (5) and fluorescent tube (4) is complementary is 100KHz～500KHz.

4. novel energy-conserving lamp high frequency ballast according to claim 3, it is characterized in that described filter circuit (1) 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, and the other end is connected on respectively on the two ends of input of rectification circuit.

5. novel energy-conserving lamp high frequency ballast according to claim 4 is characterized in that described rectification circuit (2) adopts full bridge rectifier.

6. according to each described novel energy-conserving lamp high frequency ballast in the claim 1 to 5, it is characterized in that described feedback circuit (3) 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.