CN202364458U - Two-section type alternative voltage transformation stepless lamp - Google Patents
Two-section type alternative voltage transformation stepless lamp Download PDFInfo
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- CN202364458U CN202364458U CN2011205182510U CN201120518251U CN202364458U CN 202364458 U CN202364458 U CN 202364458U CN 2011205182510 U CN2011205182510 U CN 2011205182510U CN 201120518251 U CN201120518251 U CN 201120518251U CN 202364458 U CN202364458 U CN 202364458U
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- electrodeless lamp
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Abstract
The utility model relate to a two-section type alternative voltage transformation stepless lamp. The two-section type alternative voltage transformation stepless lamp is characterized in that a primary coil N1 of a first transformer T1 is connected in series with a primary coil N2 of a second transformer T2, and the two ends of a secondary coil N3 of the first transformer T1 are connected with an electromagnetic coil of the stepless lamp; the primary coil N1 of the first transformer T1 is successively connected in series with a diode D1 and an electronic switch K1 and then is earthed, and the diode D1 is connected in series with the electronic switch K1 so as to be connected in parallel with a capacitor C1; the primary coil N1 of the first transformer T1 is successively connected in series with the primary coil N2 of the second transformer T2, a relay K3, a diode D2 and an electronic switch K2 and then is earthed and the diode D2 is connected in series with the electronic switch K2 so as to be connected in parallel with a capacitor C2; a primary centre tap of a transformer and the capacitor C 1 are utilized to form a series resonance circuit, the turns ratio of an input turn is smaller than that of the output level of the transformer is small so as to form a booster circuit, and the output high frequency high pressure can achieve tribute ionization of a lamp strip; and when the lamp is lighted, an additional primary input tap and the C2 are used to form the other resonant circuit to work, and the input/output of the transformer can form a voltage-reducing circuit.
Description
Technical field
The utility model relates to electrodeless lamp, the drive circuit of especially electrodeless lamp.
Background technology
Electrodeless lamp is the high light efficiency of a kind of representative lighting technology, the new type light source of high-color rendering future thrust.The illumination expert is called " beginning of the new revolution of lighting field " with this green illumination new light sources.But disturb owing to there is to start, the cold-starting difficulty punctures a series of problems such as resonant capacitance and conversion efficiency are low easily often by appellation " technology is immature " product.Yet if can the problems referred to above be solved, it will become the regeneration product of the most promising green energy conservation lighting source of 21 century.
The product principle: electrodeless lamp is made up of ac generator, coupler and bulb three parts.It is that electromagnetic field through radio-frequency generator is coupled in the lamp with the mode of induction, makes the metal gas avalanche ionization in the bulb, forms high-speed ion; The fluorescent material that high-speed ion bombards bulb inner wall continuously makes it send visible light.
The problem that but ac high-voltage disturbs during in the market the startup of electrodeless lamp product is still effectively solved, and China Shenzhen Airport in 2008 serious accident of " electrodeless lamp disturbs the aerial navigation system " has just taken place.
Electrodeless lamp high-power and heat dissipation problem do not have good breakthrough all the time, and this is lowly also relevant with its light efficiency.
Summary of the invention
The utility model technical problem to be solved provides the electrodeless lamp of a kind of two-part AC transformation, has solved the problem that above-mentioned electrodeless lamp exists.
For solving the problems of the technologies described above; The technical scheme of the utility model is: the electrodeless lamp of a kind of two-part AC transformation; Comprise the first transformer T1 and the second transformer T2; The primary coil N2 series connection of the primary coil N1 of the said first transformer T1 and the second transformer T2, the two ends of the secondary coil N3 of the said first transformer T1 are connected with the solenoid of electrodeless lamp; Ground connection after the primary coil N1 of the said first transformer T1 connects with diode D1 and electronic switch K1 successively; Diode D1 and electronic switch K1 series connection back are parallelly connected with capacitor C 1, and the primary coil N1 of the said first transformer T1, diode D1, electronic switch K1 and capacitor C 1 are formed a LC resonant circuit; Ground connection after the primary coil N1 of the said first transformer T1 connects with primary coil N2, relay K 3, diode D2 and the electronic switch K2 of the second transformer T2 successively; Diode D2 and electronic switch K2 series connection back are parallelly connected with capacitor C 2, and the primary coil N2 of the primary coil N1 of the said first transformer T1, the second transformer T2, relay K 3, diode D2, electronic switch K2 and capacitor C 2 are formed the 2nd LC resonant circuit; Said electronic switch K1, electronic switch K2 and relay K 3 are by driving circuit drives.
The utility model operation principle: at first utilize single-chip microcomputer closed relay K3, the 2nd LC oscillating circuit that the second transformer T2, relay K 3, diode D2, electronic switch K2 and capacitor C 2 are formed is not worked; This moment, the primary coil N1 of transformer T1 enough became a pressure-increasning state with secondary coil N3; Single-chip microcomputer makes electronic switch K1 conducting, gives the primary coil N1 charging of the first transformer T1, and when electronic switch K1 ended, the primary coil N1 of the first transformer T1 and capacitor C 1 constituted a series connection resonant circuit, the sine wave of first transformer T1 output one-period.Inductance coil and electric capacity can produce negative pressure, and diode D1 can not fallen sinusoidal wave negative pressure by the built-in backward diode short circuit of electronic switch K1, and the output that this moment, energy all was coupled to transformer gets on the solenoid of electrodeless lamp.The ac high-voltage peak-to-peak value of being exported is fixed, when ambient temperature is low, this high pressure long action time a bit, otherwise short a bit, can be as traditional electrodeless lamp, the solid tribute of fluorescent tube there is not ionization voltage to raise.When lit, single-chip microcomputer cuts out electronic switch K1, and a LC oscillating circuit is closed; Start electronic switch K2 simultaneously, open relay K 3; Make the 2nd LC oscillating circuit work, this moment, the primary coil of total transformer was to be composed in series by N1 and N2, because N1+N2＞N3; Total transformer forms the effect of step-down, the sine wave of total transformer output one-period.Inductance coil and electric capacity can produce negative pressure, and diode D2 can not fallen sinusoidal wave negative pressure by the built-in backward diode short circuit of electronic switch K2, and the output that this moment, energy all was coupled to transformer gets on the solenoid of electrodeless lamp.When negative pressure returns zero just in time is the optimum to coil charges, all will produce power loss in addition, thereby causes electronic switch and transformer heating.If not step-down makes input that negative pressure is arranged again then power output can be very big.
As improvement, said electronic switch K1, K2 are metal-oxide-semiconductor or IGBT.
As improvement, said drive circuit mainly comprises single-chip microcomputer, shown in single-chip microcomputer control said electronic switch K1, electronic switch K1 and relay K 3 through driver module U respectively.
As improvement, be provided with and be used to detect electrodeless lamp status detection circuit, said testing circuit is connected with said single-chip microcomputer.
As improvement, said testing circuit is feedback coil N4, and primary coil N1 and N2 after said feedback coil N4 and the series connection are corresponding, and said feedback coil N4 passes through divider resistance and is connected with said single-chip microcomputer.When lit, single-chip microcomputer arrives through the voltage detecting of the divider resistance of feedback coil N4, and at this moment single-chip microcomputer cuts out a LC oscillating circuit, starts the 2nd LC oscillating circuit.Feedback coil N4 provides the ruuning situation of waveform to single-chip microcomputer, thereby reaches accurate control.
As improvement, external voltage is supplied power to transformer T1, T2 through the power factor compensation booster circuit.The booster circuit of band power factor compensation provides a stable high pressure, and power factor reaches more than 0.99.
As improvement, external voltage is supplied power to single-chip microcomputer and driver module U through power factor compensation booster circuit, accessory power supply successively.Accessory power supply produces three groups of voltage V1, V2 and V3, and wherein V3 is a negative pressure.
As improvement, external voltage forms the high voltage direct current of 380～400V after through the power factor compensation booster circuit.
The beneficial effect that this utility model is compared with prior art brought is:
The utility model principle is on same transformer, to realize AC boosting and step-down; Electrodeless lamp needs the solid tribute ionization of high-frequency and high-voltage with the fluorescent tube reason when starting; Utilize this moment the primary center tap and the capacitor C 1 of transformer to constitute series resonant circuit; The turn ratio of the input turn ratio output stage of transformer is little, forms a booster circuit, makes the high-frequency and high-voltage of output can reach the tribute ionization that makes fluorescent tube; After lamp is bright, use other elementary input tap and C2 to constitute another resonant circuit work, make the input and output of transformer enough become a reduction voltage circuit.This circuit can solve traditional electrodeless lamp and utilize fluorescent tube solenoid and electric capacity to constitute resonant circuit to reach the purpose of lighting a lamp, and its wattage size just is decided by the equivalent resistance of fluorescent tube behind the bright lamp; Fail in addition to isolate with the fluorescent tube coil and not only do load but also do the power loss that filter brings starting ac high-voltage, heating can be problems such as resonant capacitance punctures owing to the more difficult ionization resonance potential of fluorescent tube with cold-starting.
Description of drawings
Fig. 1 is the utility model circuit diagram.
Embodiment
Below in conjunction with Figure of description the utility model is described further.
As shown in Figure 1; The electrodeless lamp of a kind of two-part AC transformation; Comprise the first transformer T1 and the second transformer T2, the primary coil N2 series connection of the primary coil N1 of the said first transformer T1 and the second transformer T2, the two ends of the secondary coil N3 of the said first transformer T1 are connected with the solenoid of electrodeless lamp; N1＜N3, N1+N2＞N3.Ground connection after the primary coil N1 of the said first transformer T1 connects with diode D1 and electronic switch K1 successively; Diode D1 and electronic switch K1 series connection back are parallelly connected with capacitor C 1, and the primary coil N1 of the said first transformer T1, diode D1, electronic switch K1 and capacitor C 1 are formed a LC resonant circuit.Ground connection after the primary coil N1 of the said first transformer T1 connects with primary coil N2, relay K 3, diode D2 and the electronic switch K2 of the second transformer T2 successively; Diode D2 and electronic switch K2 series connection back are parallelly connected with capacitor C 2, and the primary coil N2 of the primary coil N1 of the said first transformer T1, the second transformer T2, relay K 3, diode D2, electronic switch K2 and capacitor C 2 are formed the 2nd LC resonant circuit.
Said electronic switch K1, K2 are metal-oxide-semiconductor or IGBT, and said electronic switch K1, electronic switch K2 and relay K 3 are by driving circuit drives.In the present embodiment, drive circuit mainly comprises single-chip microcomputer, shown in single-chip microcomputer control said electronic switch K1, electronic switch K1 and relay K 3 through driver module U respectively.
Be provided with and be used to detect electrodeless lamp status detection circuit; In the present embodiment, said testing circuit is feedback coil N4, said feedback coil N4 with the series connection after primary coil N1 and N2 corresponding; N1+N2＞N4, said feedback coil N4 is connected with said single-chip microcomputer through divider resistance.
External voltage is supplied power to transformer T1, T2 through the power factor compensation booster circuit; External voltage is supplied power to single-chip microcomputer and driver module U through power factor compensation booster circuit, accessory power supply successively, and accessory power supply produces three groups of voltage V1, V2 and V3, and wherein V3 is a negative pressure, and V2 supplies single-chip microcomputer to use, and V1 and V3 supply driver module to use; External voltage forms the high voltage direct current of 380～400V after through the power factor compensation booster circuit.
Operation principle of the present invention: at first utilize single-chip microcomputer closed relay K3, the 2nd LC oscillating circuit that the second transformer T2, relay K 3, diode D2, electronic switch K2 and capacitor C 2 are formed is not worked; This moment, the primary coil N1 of transformer T1 enough became a pressure-increasning state with secondary coil N3; Single-chip microcomputer makes electronic switch K1 conducting, gives the primary coil N1 charging of the first transformer T1, and when electronic switch K1 ended, the primary coil N1 of the first transformer T1 and capacitor C 1 constituted a series connection resonant circuit, the sine wave of first transformer T1 output one-period.Inductance coil and electric capacity can produce negative pressure, and diode D1 can not fallen sinusoidal wave negative pressure by the built-in backward diode short circuit of electronic switch K1, and the output that this moment, energy all was coupled to transformer gets on the solenoid of electrodeless lamp.The ac high-voltage peak-to-peak value of being exported is fixed, when ambient temperature is low, this high pressure long action time a bit, otherwise short a bit, can be as traditional electrodeless lamp, the solid tribute of fluorescent tube there is not ionization voltage to raise.When lit, single-chip microcomputer cuts out electronic switch K1, and a LC oscillating circuit is closed; Start electronic switch K2 simultaneously, open relay K 3; Make the 2nd LC oscillating circuit work, this moment, the primary coil of total transformer was to be composed in series by N1 and N2, because N1+N2＞N3; Total transformer forms the effect of step-down, the sine wave of total transformer output one-period.Inductance coil and electric capacity can produce negative pressure, and diode D2 can not fallen sinusoidal wave negative pressure by the built-in backward diode short circuit of electronic switch K2, and the output that this moment, energy all was coupled to transformer gets on the solenoid of electrodeless lamp.When negative pressure returns zero just in time is the optimum to coil charges, all will produce power loss in addition, thereby causes electronic switch and transformer heating.If not step-down makes input that negative pressure is arranged again then power output can be very big.
The utility model principle is on same transformer, to realize AC boosting and step-down; Electrodeless lamp needs the solid tribute ionization of high-frequency and high-voltage with the fluorescent tube reason when starting; Utilize this moment the primary center tap and the capacitor C 1 of transformer to constitute series resonant circuit; The turn ratio of the input turn ratio output stage of transformer is little, forms a booster circuit, makes the high-frequency and high-voltage of output can reach the tribute ionization that makes fluorescent tube; After lamp is bright, use other elementary input tap and C2 to constitute another resonant circuit work, make the input and output of transformer enough become a reduction voltage circuit.This circuit can solve traditional electrodeless lamp and utilize fluorescent tube solenoid and electric capacity to constitute resonant circuit to reach the purpose of lighting a lamp, and its wattage size just is decided by the equivalent resistance of fluorescent tube behind the bright lamp; Fail in addition to isolate with the fluorescent tube coil and not only do load but also do the power loss that filter brings starting ac high-voltage, heating can be problems such as resonant capacitance punctures owing to the more difficult ionization resonance potential of fluorescent tube with cold-starting.
Claims (9)
1. electrodeless lamp of two-part AC transformation; It is characterized in that: comprise the first transformer T1 and the second transformer T2; The primary coil N2 series connection of the primary coil N1 of the said first transformer T1 and the second transformer T2, the two ends of the secondary coil N3 of the said first transformer T1 are connected with the solenoid of electrodeless lamp; Ground connection after the primary coil N1 of the said first transformer T1 connects with diode D1 and electronic switch K1 successively; Diode D1 and electronic switch K1 series connection back are parallelly connected with capacitor C 1, and the primary coil N1 of the said first transformer T1, diode D1, electronic switch K1 and capacitor C 1 are formed a LC resonant circuit; Ground connection after the primary coil N1 of the said first transformer T1 connects with primary coil N2, relay K 3, diode D2 and the electronic switch K2 of the second transformer T2 successively; Diode D2 and electronic switch K2 series connection back are parallelly connected with capacitor C 2, and the primary coil N2 of the primary coil N1 of the said first transformer T1, the second transformer T2, relay K 3, diode D2, electronic switch K2 and capacitor C 2 are formed the 2nd LC resonant circuit; Said electronic switch K1, electronic switch K2 and relay K 3 are by driving circuit drives.
2. the electrodeless lamp of a kind of two-part AC transformation according to claim 1, it is characterized in that: said electronic switch K1, K2 are metal-oxide-semiconductor.
3. the electrodeless lamp of a kind of two-part AC transformation according to claim 1, it is characterized in that: said electronic switch K1, K2 are IGBT.
4. the electrodeless lamp of a kind of two-part AC transformation according to claim 1, it is characterized in that: said drive circuit mainly comprises single-chip microcomputer, shown in single-chip microcomputer control said electronic switch K1, electronic switch K1 and relay K 3 through driver module U respectively.
5. the electrodeless lamp of a kind of two-part AC transformation according to claim 4 is characterized in that: be provided with and be used to detect electrodeless lamp status detection circuit, said testing circuit is connected with said single-chip microcomputer.
6. the electrodeless lamp of a kind of two-part AC transformation according to claim 5; It is characterized in that: said testing circuit is feedback coil N4; Primary coil N1 and N2 after said feedback coil N4 and the series connection are corresponding, and said feedback coil N4 passes through divider resistance and is connected with said single-chip microcomputer.
7. the electrodeless lamp of a kind of two-part AC transformation according to claim 1 is characterized in that: external voltage is supplied power to transformer T1, T2 through the power factor compensation booster circuit.
8. the electrodeless lamp of a kind of two-part AC transformation according to claim 7 is characterized in that: external voltage is supplied power to single-chip microcomputer and operational amplifier U through power factor compensation booster circuit, accessory power supply successively.
9. the electrodeless lamp of a kind of two-part AC transformation according to claim 7 is characterized in that: external voltage forms the high voltage direct current of 380～400V after through the power factor compensation booster circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205182510U CN202364458U (en) | 2011-12-10 | 2011-12-10 | Two-section type alternative voltage transformation stepless lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205182510U CN202364458U (en) | 2011-12-10 | 2011-12-10 | Two-section type alternative voltage transformation stepless lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202364458U true CN202364458U (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205182510U Expired - Fee Related CN202364458U (en) | 2011-12-10 | 2011-12-10 | Two-section type alternative voltage transformation stepless lamp |
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| Country | Link |
|---|---|
| CN (1) | CN202364458U (en) |
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2011
- 2011-12-10 CN CN2011205182510U patent/CN202364458U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20151210 |
|
| EXPY | Termination of patent right or utility model |