CN1812679A - Efficient energy-saving fluorescent lamp electronic ballast - Google Patents
Efficient energy-saving fluorescent lamp electronic ballast Download PDFInfo
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- CN1812679A CN1812679A CN 200510033412 CN200510033412A CN1812679A CN 1812679 A CN1812679 A CN 1812679A CN 200510033412 CN200510033412 CN 200510033412 CN 200510033412 A CN200510033412 A CN 200510033412A CN 1812679 A CN1812679 A CN 1812679A
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Abstract
An electronic ballast of fluorescent lamp consists of filtering circuit of rectification, oscillating circuit of high frequency, boosting circuit of high frequency, stopping circuit, series-resonant circuit and feedback circuit with its one end being connected to oscillating circuit of high frequency and another end being connected on earthing .It features that said ballast has function of over current protection and current automatic-modulation.
Description
Technical field
The present invention relates to a kind of lighting device, particularly relate to a kind of ballasting circuit of fluorescent lamp.
Background technology
After the relay sense ballast, electric ballast just becomes the energy-conservation project of new light sources of the exploitation of trying to be the first in the world.But also exist a lot of defectives on stream up to now.For example: frequency can not be fixed, and output waveform is unsmooth, and self produces the high order harmonic component interference source, influences other household electrical appliance; Be subjected to the influence of line voltage, output current be subjected to easily series resonant circuit about and unstable, directly have influence on the life-span and the quality problems of ballast and fluorescent lamp.It is low generally to show as power factor (PF), and reactive loss is big, and brightness is not in place, the waste electric power resource, and the working temperature height, coefficient of safety is low etc.
Summary of the invention
In order to solve the defective of above-mentioned traditional ballast, the invention provides a kind of energy-efficient electric ballast.It has fixed-frequency, and overcurrent protection and electric current be the characteristics of modulation automatically.
Technical scheme of the present invention is: a kind of electric ballast comprises the current rectifying and wave filtering circuit, high-frequency oscillating circuits, high frequency booster circuit, block isolating circuit, the series resonant circuit that are linked in sequence successively; Also comprise from the high frequency booster circuit and drawing, return the feedback circuit of high-frequency oscillating circuits.Described feedback circuit is that the output of the inductance BL1 from the high frequency booster circuit is drawn, and after series diode D7 and the resistance R 8, the one road inserts the base stage of the triode T2 in the high-frequency oscillating circuits; Another road is respectively by resistance R 9 and capacitor C 12 back ground connection.The front end of described current rectifying and wave filtering circuit is equipped with the shaping anti-jamming circuit of inductance L 1, L2 and capacitor C 1, C2, C3 composition.Wherein L1, L2 are serially connected in respectively in two power input lines, and C1 is connected across the input of L1, L2, are connected across the output of L1, L2 after C2 and the C3 series connection, the neutral earthing of C2 and C3.Described high-frequency oscillating circuits has fixing frequency of oscillation.The built-in oscillation frequency of described high-frequency oscillating circuits is that 75 kilocycles are to 100 kilocycles.
Compare with traditional ballast, the present invention has following beneficial effect:
1. operating voltage range is wide, can normally use when civil power 160V-260V;
2. lack start-up time, when low pressure is started, generally be no more than for 0.3 second;
3. noise does not take place in current balance, stable during work, and flicker free is not disturbed other household electrical appliance.
Description of drawings
Fig. 1 is the functional-block diagram of electric ballast of the present invention;
Fig. 2 is a kind of circuit theory diagrams of the embodiment of electric ballast of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the further instruction embodiments of the invention.
Can see that from Fig. 1 functional-block diagram electric ballast of the present invention comprises current rectifying and wave filtering circuit, high-frequency oscillating circuits, high frequency booster circuit, block isolating circuit, series resonant circuit; Also comprise and from the high frequency booster circuit, draw the feedback circuit that returns high-frequency oscillating circuits.It has fixed-frequency, and overcurrent protection and electric current be the characteristics of modulation automatically.It is a kind of energy-efficient electric ballast.
Fig. 2 is the circuit theory diagrams of an embodiment of electric ballast of the present invention.Feedback circuit is that the output of the inductance BL1 from the high frequency booster circuit is drawn among the figure, and after series diode D7 and the resistance R 8, the one road inserts the base stage of the triode T2 in the high-frequency oscillating circuits; Another road is respectively by resistance R 9 and capacitor C 12 back ground connection.And the front end of current rectifying and wave filtering circuit is equipped with the shaping anti-jamming circuit of inductance L 1, L2 and C1, C2, C3 composition.In wherein L1, L2 were serially connected in two power input lines respectively, C1 was connected across L1, L2 input, was connected across L1, L2 output, the neutral earthing of C2 and C3 after C2 and the C3 series connection.Another characteristics of this electric ballast are, high-frequency oscillating circuits has fixing frequency of oscillation, and its frequency of oscillation is that 75 kilocycles are to 100 kilocycles.
Its operation principle is, the alternating current of 160V-260V is entered the shaping anti-jamming circuit of being made up of inductance L 1, L2 and capacitor C 1, C2, C3 by the XR fuse, enter the full bridge rectifier of forming by diode D1, D2, D3, D4 again, alternating current is transformed into direct current.C5 is as filter capacitor, being removed from some the bad interchange ripples on the AC and DC converter.Then enter resistance R 1, R2, R3, R4, R5, R6, capacitor C 6, C7, C8, inductance L 3, L4, L5, the complete high-frequency impulse self-oscillation switching circuit that diode D5, D6 and triode T1, T2 form by the DC converter output DC.Wherein on same annular ferrite, L3 and L4 are all two circles jointly for inductance L 3, L4 and L5, and L5 is 4 circles.The L5 of oscillation pulse signal voltage from high-frequency oscillating circuits directly is defeated by by inductance BL1, boosts, and the high-frequency ac pulse voltage after boosting adds the series resonant circuit of fluorescent lamp, resistance R 7, capacitor C 11 compositions; Finish high pressure bombardment simultaneously to fluorescent material in the fluorescent tube.Fluorescent lamp was lighted rapidly between≤0.3 second.After fluorescent lamp was lighted, BL1 converted the ballast shakedown to by pressure-increasning state.Capacitor C 9, C10 are the half-bridge block isolating circuit.
Electric ballast operating voltage range of the present invention is wide, can normally use when civil power 160V-260V; Start-up time is short, when low pressure is started, generally is no more than for 0.3 second; Noise does not take place in current balance, stable during work, flicker free is not disturbed other household electrical appliance.The variation of its drift current has only ± 1%mA, and higher harmonic content is zero, and the output crest is level and smooth.Circuit has overcurrent protection function, can not damage because of zero load or high frequency contact sparking.Working life reached more than 10,000 hours.Brightness is 1.5 times of Inductive ballast, and fluorescent tube illumination does not change, and light is soft, environmental protection, quality height.The raising of brightness is disregarded, and can also economize on electricity more than 65%.Adopt the electronic circuit of capacitive, common factor arrives 98%cos φ, and power consumption is little, brightness is high, do not produce interference source, and to compare reactive loss very little with other ballast.Not only do not need consume reactive power, can also additionally offer the reactive power of electrical network and other electrical equipment.Product electrical strength height, working temperature is low, generally has only about 41 degree.And voltage is high more, and working temperature is low more on the contrary.Safe and reliable, also can operate as normal in rugged environment comparatively.Aspect safety utilization of electric power, reach and be higher than the safety standard that general low-voltage electrical apparatus is newly followed.Temperature index particularly is better than the numerical value of IEC-82 international standard and GB2313-80 national Specification technically.
The operating current of this electric ballast can change from 145mA to 170mA by adjusting the parameter of element, and the fluorescent lamp of 20W, 30W and 40W is the same general.Filament moment starting current is 40mA, operating current 8-10mA.And has an automatically function of protection of overcurrent.The number of elements that its circuit is formed is few, simple in structure, stable performance.
Claims (5)
1. electric ballast, comprise the current rectifying and wave filtering circuit, high-frequency oscillating circuits, high frequency booster circuit, block isolating circuit, the series resonant circuit that are linked in sequence successively, its special seized with terror being: also comprise from the high frequency booster circuit and drawing, return the feedback circuit of high-frequency oscillating circuits.
2. electric ballast as claimed in claim 1, its special seized with terror being: described feedback circuit is that the output of the inductance BL1 from the high frequency booster circuit is drawn, after serial connection diode D7 and the resistance R 8, the one road inserts the base stage of the triode T2 in the high-frequency oscillating circuits; Another road is respectively by resistance R 9 and capacitor C 12 back ground connection.
3. electric ballast as claimed in claim 1, its special seized with terror being: the front end of described current rectifying and wave filtering circuit is equipped with the shaping anti-jamming circuit of inductance L 1, L2 and capacitor C 1, C2, C3 composition, wherein L1, L2 are serially connected in respectively in two power input lines, C1 is connected across the input of L1, L2, be connected across the output of L1, L2 after C2 and the C3 series connection, the neutral earthing of C2 and C3.
4. electric ballast as claimed in claim 1, its special seized with terror being: described high-frequency oscillating circuits has fixing frequency of oscillation.
5. electric ballast as claimed in claim 4, its special seized with terror being: the built-in oscillation frequency of described high-frequency oscillating circuits is that 75 kilocycles are to 100 kilocycles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510033412 CN1812679A (en) | 2005-03-04 | 2005-03-04 | Efficient energy-saving fluorescent lamp electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510033412 CN1812679A (en) | 2005-03-04 | 2005-03-04 | Efficient energy-saving fluorescent lamp electronic ballast |
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| Publication Number | Publication Date |
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| CN1812679A true CN1812679A (en) | 2006-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510033412 Pending CN1812679A (en) | 2005-03-04 | 2005-03-04 | Efficient energy-saving fluorescent lamp electronic ballast |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101925244A (en) * | 2010-01-15 | 2010-12-22 | 海洋王照明科技股份有限公司 | Ballast circuit for high-frequency electrode-less fluorescent lamp |
| CN102215625A (en) * | 2010-04-05 | 2011-10-12 | 李守运 | Novel energy-saving high-frequency ballast |
| CN101849441B (en) * | 2007-11-05 | 2014-04-02 | 赤多尼科阿特可两合股份有限公司 | Ballast for a gas discharge lamp, for example an HID lamp |
-
2005
- 2005-03-04 CN CN 200510033412 patent/CN1812679A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101849441B (en) * | 2007-11-05 | 2014-04-02 | 赤多尼科阿特可两合股份有限公司 | Ballast for a gas discharge lamp, for example an HID lamp |
| CN101925244A (en) * | 2010-01-15 | 2010-12-22 | 海洋王照明科技股份有限公司 | Ballast circuit for high-frequency electrode-less fluorescent lamp |
| CN101925244B (en) * | 2010-01-15 | 2013-08-28 | 海洋王照明科技股份有限公司 | Ballast circuit for high-frequency electrode-less fluorescent lamp |
| CN102215625A (en) * | 2010-04-05 | 2011-10-12 | 李守运 | Novel energy-saving high-frequency ballast |
| CN102215625B (en) * | 2010-04-05 | 2015-03-11 | 李守运 | Novel energy-saving high-frequency ballast |
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20060802 |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned |