CN201063918Y - Non-polar universal type electromagnetic fluorescent lamp ballast - Google Patents
Non-polar universal type electromagnetic fluorescent lamp ballast Download PDFInfo
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- CN201063918Y CN201063918Y CNU2007200845395U CN200720084539U CN201063918Y CN 201063918 Y CN201063918 Y CN 201063918Y CN U2007200845395 U CNU2007200845395 U CN U2007200845395U CN 200720084539 U CN200720084539 U CN 200720084539U CN 201063918 Y CN201063918 Y CN 201063918Y
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Abstract
The utility model discloses an electrodeless universal type electromagnetic fluorescent lamp ballast, which is formed by connecting an AC-DC converting circuit, a DC-AC converting circuit and a voltage booster circuit. The AC-DC converting circuit is a full-bridge rectification circuit formed by D1-D4; a positive-negative electrode output of the full-bridge rectification circuit is connected to the DC-AC converting circuit; the DC-AC converting circuit is a resonant half-bridge circuit formed by triodes V1 and V2; a collecting electrode of V1 is connected with an output positive electrode of the full-bridge rectification circuit; an emitter of V2 is connected with an output negative electrode of the full-bridge rectification circuit through D12; the voltage booster circuit is formed by a transformer T2; a secondary output of T2 is connected with two ends of a fluorescent lamp tube through a serially connected capacitor C10. The utility model can be used without preheating filament, and can prolong the life span of lamp tubes. As a plurality of fluorescent lamp tubes can be serially connected for working, the utility model saves more electricity.
Description
Technical field
The utility model relates to a kind of electrodeless universal electromagnetism fluorescent lamp ballast, belongs to illumination, field of household appliances.
Background technology
The conventional fluorescent lamp ballast is a kind of to be the inductive type filament pre-heating, adopts big and heavy inductor, and the glow starter preheating filament of joining, and makes the low-pressure mercury vapour ionization in the fluorescent tube, fluorescent tube conducting and lighting.Inductive type ballast oneself power consumption is big, and the low fluorescent tube of low or ambient temperature can start difficulty because of voltage, and 50 hertz of stroboscopics are arranged behind the lamp tube starting.Another kind is now a large amount of high-frequency electronic ballasts that use, and alternating current is transformed to the alternating current of upper frequency, utilizes the tube filament pipeline start up by preheating.Advantage is 1, power savings is remarkable, and fluorescent lamp is worked under high frequency, can increase light output, the power factor height.2, volume is little, and is in light weight.3, no stroboscopic, no industrial frequency noise.4, low voltage can reliably start work, but the fluorescence class ballast that uses now all needs tube filament preheating ability operate as normal, and filament blow can't use after damaging, and can not many fluorescent tube series connection use.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, a kind of electrodeless universal electromagnetism fluorescent lamp ballast is provided, need not tube filament and also can normally start work, all fluorescent tubes of the general popular use on the market of energy, comprise filament blow but gastight fluorescent tube, also can produce without fluorescent tube filament, that caliber is littler, improve fluorescent tube useful life.
The purpose of this utility model is achieved through the following technical solutions: a kind of electrodeless universal electromagnetism fluorescent lamp ballast, by the AC-DC translation circuit, DC-AC translation circuit and booster circuit connect to form, the full bridge rectifier that the AC-DC translation circuit is made up of D1-D4, capacitor C 4, C5, diode D5-D8 is connected full-bridge and exports between the positive and negative two ends, form Passive Power factor balance filter circuit, the both positive and negative polarity output of full bridge rectifier is connected to the DC-AC translation circuit, the resonance half-bridge circuit that the DC-AC translation circuit is made up of triode V1 and V2, the collector electrode of triode V1 is connected with the full bridge rectifier output cathode, the emitter of triode V2 is connected with the full bridge rectifier output negative pole by diode D12, resistance R 3, diode D13 is the ground level master biasing of V1, resistance R 4, diode D14 is the ground level master biasing of V2, resistance R 5, inductance T1b, capacitor C 7 and resistance R 6, inductance T1c, capacitor C 8 is formed RLC ground level resonant circuit, booster circuit is made up of transformer T2, capacitor C 9 inputs are connected to the diode D6 of power factor balance filter circuit, D7 and capacitor C 2, between the C3, capacitor C 9 outputs, output between triode V1 emitter and the V2 collector electrode is connected to the elementary two ends of transformer T2, and T2 level output is connected with the fluorescent tube two ends by the capacitor C 10 of serial connection.
Above-mentioned a kind of electrodeless universal electromagnetism fluorescent lamp ballast, AC-DC translation circuit input is connected with the LC filter circuit that inductance L and capacitor C 1 are formed.
Adopt the technical program, the high frequency transformer that boosts is connected with the fluorescent tube two ends, so need not filament pre-heating, but prolonging lamp tube service life, except that in the market fluorescent tube all can use, fracture of wire fluorescent tube (air tight) all can use, and can produce any model of not being with filament, Any shape, various power requirements, fluorescent tube that caliber is littler; Again because the utility model makes fluorescent lamp operation under high frequency, can increase light output, light transmittance efficiency improves more than 10%, the utility model can conveniently be realized a ballast output serial connection 2 or 3 fluorescent tubes, as required, at the elementary T3 in parallel of T2, a ballast output serial connection 4 or 6 fluorescent tubes, many fluorescent tubes can be connected in series work, so the utility model more economizes on electricity.
Description of drawings
Be described further below in conjunction with drawings and Examples.
Fig. 1 is the utility model circuit theory diagrams.
Fig. 2 is the utility model functional-block diagram.
Fig. 3 is the connection diagram of 2 fluorescent tubes of the utility model serial connection.
Fig. 4 is the connection diagram of 3 fluorescent tubes of the utility model serial connection.
Fig. 5 is the connection diagram of 4 fluorescent tubes of the utility model serial connection.
Fig. 6 is the connection diagram of 6 fluorescent tubes of the utility model serial connection.
Wherein, the double accompanying drawing that makes an abstract of Fig. 1.
Embodiment
As shown in Figure 1, a kind of electrodeless universal electromagnetism fluorescent lamp ballast, by the AC-DC translation circuit, DC-AC translation circuit and booster circuit connect to form, the full bridge rectifier that the AC-DC translation circuit is made up of D1-D4, effect is the AC-DC conversion, capacitor C 4, C5, diode D5-D8 is connected full-bridge and exports between the positive and negative two ends, form Passive Power factor balance filter circuit, different with custom circuit is at D5, D6, increase D7 in the D8 serial connection diode circuit, be serially connected between D6 and the D8, make the output loop leading point at D5, D6 and D7, between the D8, reach balance, power factor can reach 0.9-0.99, the both positive and negative polarity output of full bridge rectifier is connected to the DC-AC translation circuit, the resonance half-bridge circuit that the DC-AC translation circuit is made up of triode V1 and V2, finish DC-AC, power frequency-high frequency conversion, the collector electrode of V1 is connected with the full bridge rectifier output cathode, the emitter of V2 is connected with the full bridge rectifier output negative pole by D12, R3, D13 is the ground level master biasing of V1, R4, D14 is the ground level master biasing of V2, R5, T1b, C7 and R6, T1c, C8 forms RLC ground level resonant circuit, different with custom circuit is to have increased C7 and C8 oscillating capacitance, makes circuit work frequency more stable.Booster circuit is made up of transformer T2, be need not the fluorescent tube preheating and the key of many fluorescent tubes of serial connection, finish that high frequency-high frequency conversion boosts, the C9 input is connected between D6, the D7 and C2, C3 of power factor balance filter circuit, output between C9 output, V1 emitter and the V2 collector electrode is connected to the elementary two ends of T2, T2 level output is connected with the fluorescent tube two ends by the capacitor C 10 of serial connection, the operating current of C10 capacitance size decision fluorescent tube H.
Net 220V50Hz power supply in city is respectively by fuse F and inductance L input, and L, C form the LC filter, the electromagnetic interference of decay city net power supply.
Fig. 2 is a schematic diagram of the present utility model, operation principle of the present utility model is: at first the power frequency mains supply with 220V/50HZ is converted to direct current, usually realize the AC-DC conversion with the bridge full-wave rectifier filter circuit, this circuit has also increased passive PFC (power factor (PF) balance filter circuit) or active PFC (can light modulation), and power factor (PF) reaches 0.90-0.99.DC-AC conversion then, its effect are the high-frequency alternating currents that produces frequency 20-45KHZ.DC-AC transformation topology structure has several patterns, and this circuit has adopted at present widely popular semi-bridge inversion configuration.T is a booster circuit, need not can directly start fluorescent tube by filament pre-heating.C1, T form series resonant circuit, and when resonance took place, the high-voltage pulse that produces the 600-1800V peak value at T output two ends started fluorescent tube, and C2 ballast after fluorescent tube starts light makes lamp tube ends voltage and frequency retrieval to normal.High frequency transformer is connected with the fluorescent tube two ends because boost, so need not filament pre-heating, but prolonging lamp tube service life, except that in the market fluorescent tube all can use, fracture of wire fluorescent tube (air tight) all can use, and can produce any model of not being with filament, Any shape, various power requirements, fluorescent tube that caliber is littler; Because the utility model makes fluorescent lamp operation under high frequency, can increase light output again, light transmittance efficiency improves more than 10%.
Fig. 3, Fig. 4 are embodiment 1,2 of the present utility model, are with Fig. 1 difference, and transformer T2 and 2,3 fluorescent tubes are connected in series.
Fig. 5, Fig. 6 are embodiment 3,4 of the present utility model, are with Fig. 1 difference, and at the elementary T3 in parallel of T2, step-up transformer and 4 and 6 fluorescent tubes are connected in series.
Because many fluorescent tubes can be connected in series work, so the utility model more economizes on electricity.
Claims (2)
1. electrodeless universal electromagnetism fluorescent lamp ballast, by the AC-DC translation circuit, DC-AC translation circuit and booster circuit connect to form, it is characterized in that: the full bridge rectifier that the AC-DC translation circuit is made up of D1-D4, capacitor C 4, C5, diode D5-D8 is connected full-bridge and exports between the positive and negative two ends, form Passive Power factor balance filter circuit, the both positive and negative polarity output of full bridge rectifier is connected to the DC-AC translation circuit, the resonance half-bridge circuit that the DC-AC translation circuit is made up of triode V1 and V2, the collector electrode of triode V1 is connected with the full bridge rectifier output cathode, the emitter of triode V2 is connected with the full bridge rectifier output negative pole by diode D12, resistance R 3, diode D13 is the ground level master biasing of V1, resistance R 4, diode D14 is the ground level master biasing of V2, resistance R 5, inductance T1b, capacitor C 7 and resistance R 6, inductance T1c, capacitor C 8 is formed RLC ground level resonant circuit, booster circuit is made up of transformer T2, capacitor C 9 inputs are connected to the diode D6 of power factor balance filter circuit, D7 and capacitor C 2, between the C3, capacitor C 9 outputs, output between triode V1 emitter and the V2 collector electrode is connected to the elementary two ends of transformer T2, and T2 level output is connected with the fluorescent tube two ends by the capacitor C 10 of serial connection.
2. a kind of electrodeless universal electromagnetism fluorescent lamp ballast according to claim 1 is characterized in that: AC-DC translation circuit input is connected with the LC filter circuit that inductance L and capacitor C 1 are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200845395U CN201063918Y (en) | 2007-04-29 | 2007-04-29 | Non-polar universal type electromagnetic fluorescent lamp ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200845395U CN201063918Y (en) | 2007-04-29 | 2007-04-29 | Non-polar universal type electromagnetic fluorescent lamp ballast |
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| Publication Number | Publication Date |
|---|---|
| CN201063918Y true CN201063918Y (en) | 2008-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200845395U Expired - Fee Related CN201063918Y (en) | 2007-04-29 | 2007-04-29 | Non-polar universal type electromagnetic fluorescent lamp ballast |
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| CN (1) | CN201063918Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980587A (en) * | 2010-11-22 | 2011-02-23 | 三峡大学 | Electronic ballast for cold cathode fluorescent lamp and output current adjusting method thereof |
| CN101355322B (en) * | 2008-09-05 | 2011-06-15 | 南京航空航天大学 | Single-electrical-inductance double-step-down type half-bridge inverter working in half cycle and control method thereof |
| CN109374238A (en) * | 2018-11-20 | 2019-02-22 | 厦门通士达照明有限公司 | The gas leak detection device of LED lamp tube |
| CN109787474A (en) * | 2019-02-25 | 2019-05-21 | 珠海祺力电子科技有限公司 | A kind of electromagnetism superimposing amplifier |
-
2007
- 2007-04-29 CN CNU2007200845395U patent/CN201063918Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101355322B (en) * | 2008-09-05 | 2011-06-15 | 南京航空航天大学 | Single-electrical-inductance double-step-down type half-bridge inverter working in half cycle and control method thereof |
| CN101980587A (en) * | 2010-11-22 | 2011-02-23 | 三峡大学 | Electronic ballast for cold cathode fluorescent lamp and output current adjusting method thereof |
| CN109374238A (en) * | 2018-11-20 | 2019-02-22 | 厦门通士达照明有限公司 | The gas leak detection device of LED lamp tube |
| CN109787474A (en) * | 2019-02-25 | 2019-05-21 | 珠海祺力电子科技有限公司 | A kind of electromagnetism superimposing amplifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080521 Termination date: 20120429 |