CN104822213A - Illuminating device with adjustable brightness - Google Patents
Illuminating device with adjustable brightness Download PDFInfo
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- CN104822213A CN104822213A CN201510284713.XA CN201510284713A CN104822213A CN 104822213 A CN104822213 A CN 104822213A CN 201510284713 A CN201510284713 A CN 201510284713A CN 104822213 A CN104822213 A CN 104822213A
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Abstract
The invention provides an illuminating device with an adjustable brightness, which comprises the components of a lamp socket, a switching mode power supply, a lamp post, a lamp cover and a lamp head, wherein the lamp cover and the lamp head are mounted at the top end of the lamp post. The switching mode power supply comprises a three-phase resonant converter with a central-tapped transformer. The illuminating device which has the adjustable brightness and comprises the three-phase resonant converter with the central-tapped transformer has advantages of low loss and high power density. Service life of the illuminating device can be prolonged and the reliability can be improved. Furthermore the requirement of a user for brightness of the illuminating device in different environments can be satisfied.
Description
Technical field
The invention belongs to illuminations field, particularly the intensity adjustable lighting device of one.
Background technology
Lighting device become already people live study necessity, especially for need be in study student and job family.
Lighting device traditional is at present while meeting illuminations function, many uses Switching Power Supply carries out folding, the course of work of the Switching Power Supply that traditional lighting device uses is by " copped wave ", namely the direct voltage of input is cut into amplitude and equals that the pulse voltage of input voltage amplitude realizes.The duty ratio of pulse is regulated by the controller of Switching Power Supply; Once input voltage is cut into ac square wave, its amplitude just can be raised by transformer or reduce, just can be increased the magnitude of voltage of output by the secondary winding number increasing transformer, finally these AC wave shape just obtain VD after rectifying and wave-filtering.
But there is switching loss, the surge voltage that can produce when cut-off switch element and the lighting device poor work stability caused because of voltage instability in the lighting device of the Switching Power Supply using above-mentioned lighting device to use, its loss is high, power density is low, working life and the low problem of reliability; And only play the conventional illuminator of illuminations effect, it can not regulate brightness, user the demand of different lamplight brightness cannot be used at Different periods.
Summary of the invention
Technical problem to be solved by this invention, for the defect in aforementioned background art and deficiency, a kind of efficient scalable lighting device with the Switching Power Supply of the three-phase resonate converter of interphase reactor transformer is proposed, its loss is low, power density is high, can improve working life and the reliability of lighting device; And the function that can realize from the brightness of main regulation lighting device.
The present invention is achieved through the following technical solutions above-mentioned purpose:
For the technical disadvantages that existing lighting device exists, redesign a kind of intensity adjustable lighting device, comprise lamp socket, Switching Power Supply, lamp stand and be arranged on lampshade and the lamp holder on lamp stand top, it is characterized in that, described Switching Power Supply comprises the three-phase resonate converter with interphase reactor transformer.
Further, its three-phase resonate converter topological structure is: comprise input voltage Uin, former limit and secondary and all have tapped transformer T, and there are 3 groups of vice-side winding, switch element S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, diode D1, D2, D3, D4, D5, D6, D7, D8, inductance L 1, L2, L3.Above-mentioned switch element can be IGBT, and diode is fast recovery diode.
Further, concrete annexation is: comprise input voltage Uin, former limit and secondary and all have tapped transformer T, switch element S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, diode D1, D2, D3, D4, D5, D6, D7, D8, inductance L 1, L2, L3 and controller, described each switching tube has antiparallel parasitic diode and parasitic capacitance, described transformer T has 3 vice-side winding, first vice-side winding is N3, N4, second vice-side winding is N5, N6, and the 3rd vice-side winding is N7, N8;
Further, the different name end of former limit winding centre tap the first half winding connects the anode of diode D1, the Same Name of Ends of former limit winding centre tap the latter half winding connects the anode of diode D2, the Same Name of Ends of former limit winding centre tap the first half winding N1 is connected with the anode of input voltage Uin with the tie point of the different name end of former limit winding centre tap the latter half winding N2, and the negative terminal of input voltage Uin connects the negative electrode of diode D1, D2;
Further, the first structure exporting phase is: the collector electrode of anode connecting valve element S1, S3 of input voltage Uin, the emitter of negative terminal connecting valve element S2, S4 of input voltage Uin; The emitter of switch element S1 connects the anode of diode D3, the negative electrode of diode D3 connects the Same Name of Ends of first vice-side winding centre tap the first half winding, the different name end of first vice-side winding centre tap the first half winding N3 is connected with the Same Name of Ends of first vice-side winding centre tap the latter half winding N4, and its tie point is connected with one end of inductance L 1, the different name end of first vice-side winding centre tap the latter half winding is connected with the anode of diode D4, the collector electrode of the negative electrode connecting valve element S2 of diode D4; The emitter of switch element S3 is connected with the collector electrode of switch element S4, and the other end of its tie point and inductance L 1 and load are connected;
Further, the second structure exporting phase is: the collector electrode of anode connecting valve element S5, S7 of input voltage Uin, the emitter of negative terminal connecting valve element S6, S8 of input voltage Uin; The emitter of switch element S5 connects the anode of diode D5, the negative electrode of diode D5 connects the Same Name of Ends of second vice-side winding centre tap the first half winding, the different name end of second vice-side winding centre tap the first half winding N5 is connected with the Same Name of Ends of second vice-side winding centre tap the latter half winding N6, and its tie point is connected with one end of inductance L 2, the different name end of second vice-side winding centre tap the latter half winding is connected with the anode of diode D6, the collector electrode of the negative electrode connecting valve element S6 of diode D6; The emitter of switch element S7 is connected with the collector electrode of switch element S8, and the other end of its tie point and inductance L 2 and load are connected;
Further, the 3rd structure exporting phase is: the collector electrode of anode connecting valve element S9, S11 of input voltage Uin, the emitter of negative terminal connecting valve element S10, S12 of input voltage Uin; The emitter of switch element S9 connects the anode of diode D7, the negative electrode of diode D7 connects the Same Name of Ends of the 3rd vice-side winding centre tap the first half winding, the different name end of the 3rd vice-side winding centre tap the first half winding N7 is connected with the Same Name of Ends of the 3rd vice-side winding centre tap the latter half winding N8, and its tie point is connected with one end of inductance L 3, the different name end of the 3rd vice-side winding centre tap the latter half winding is connected with the anode of diode D8, the collector electrode of the negative electrode connecting valve element S10 of diode D8; The emitter of switch element S11 is connected with the collector electrode of switch element S12, and the other end of its tie point and inductance L 3 and load are connected; Controller control switch S1 and S2 alternate conduction, S3 and S4 alternate conduction, S5 and S6 alternate conduction, S7 and S8 alternate conduction, S9 and S10 alternate conduction, S11 and S12 alternate conduction, each output is mutually by resonance circuit that the stray capacitance of respective inductance L 1, L2, L3 and each switch element is formed, the each switch element of conducting when the terminal voltage of each switch element is 0, thus it is open-minded to realize no-voltage.
Further, described switching tube is IGBT or MOSFET.
Further, described input voltage is storage battery, fuel cell or photovoltaic cell.
Further, described each diode is fast recovery diode or Schottky diode.
Further, described load is three-phase alternating current load or rectified three-phase circuit.
Further, described lampshade is that cross section is fan-shaped cell body and the circle centre position of its cross section is fixed on described lamp stand top, the opening of described lampshade is positioned at the right-angle side side of its cross section, and leave angle between described opening and described lamp stand, described lamp holder is the fan-shaped block be arranged in described lampshade, its shape and size are corresponding with described lampshade inner chamber, and it is hinged that described lamp holder two ends circle centre position and described lampshade pass through hinge, and the luminous end of described lamp holder is its arcwall face one end.
Further, also comprise knob assembly, described knob assembly comprises knob, gear and rotating shaft, the two is connected with gear centre through knob by rotating shaft, at described lampshade sidewall, have gear type groove near the circle centre position of described lampshade cross section, rotating shaft is fixedly connected with described lamp holder through gear type groove center away from one end of knob, and described lamp holder is less than described gear type groove width in the direction in which at the width in the direction that rotating shaft extends.
Further, described lamp holder and described hinge are slidably matched.
Compared with prior art, high reliability lighting device of the present invention has following advantages:
The switching frequency that the lighting device with the Switching Power Supply of the three-phase resonate converter of interphase reactor transformer utilizes the form of interphase reactor transformer can realize by control circuit control switch element, makes output voltage become predetermined value.
And because electric current flows through negative direction during each switching elements ON, therefore do not produce switching losses.
And because carried out resonance action, surge voltage during cut-off switch element also can not be produced.
While realizing energy feedback, utilize the parasitic capacitance of inductance and switch element to form Sofe Switch form, do not have unnecessary power capacity, its loss is low, and power density is high, can improve working life and the reliability of lighting device.
Lighting device brightness can from main regulation, meets the demand of different users's illumination apparatus brightness under various circumstances.
Accompanying drawing explanation
Fig. 1: the structural representation of the three-phase resonate converter of the mains switch in lighting device of the present invention;
Fig. 2: the control impuls sequential chart of switch element S1, S2, S3, S4;
Fig. 3: the schematic side view that the lamp holder of a kind of intensity adjustable lighting device of the present invention does not screw out in lampshade;
Fig. 4: the schematic side view that the lamp holder of intensity adjustable lighting device of the present invention screws out in lampshade;
Fig. 5: the schematic side view of lampshade of the present invention;
Fig. 6: the schematic top plan view of knob assembly of the present invention;
Fig. 7: the schematic diagram of gear of the present invention.
Wherein, 1-lampshade, 11-opening, 12-gear type groove, 2-lamp stand, 3-base, 4-knob assembly, 41-knob, 42-gear, 43-rotating shaft, 5-lamp holder, 51-arcwall face, Uin-input voltage, T-tapped transformer, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12-switch element, D1, D2, D3, D4, D5, D6, D7, D8-diode, L1, L2, L3-inductance, N1-former limit winding centre tap the first half winding, N2-former limit winding centre tap the latter half winding, N3, N4-the first vice-side winding, N5, N6-the second vice-side winding, N7, N8-the 3rd vice-side winding.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, the three-phase resonate converter of the Switching Power Supply of intensity adjustable lighting device of the present invention comprises input voltage Uin, former limit and secondary all have tapped transformer T, switch element S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, diode D1, D2, D3, D4, D5, D6, D7, D8, inductance L 1, L2, L3 and controller, described each switching tube has antiparallel parasitic diode and parasitic capacitance, described transformer T has 3 vice-side winding, first vice-side winding is N3, N4, second vice-side winding is N5, N6, 3rd vice-side winding is N7, N8,
The different name end of former limit winding centre tap the first half winding connects the anode of diode D1, the Same Name of Ends of former limit winding centre tap the latter half winding connects the anode of diode D2, the Same Name of Ends of former limit winding centre tap the first half winding N1 is connected with the anode of input voltage Uin with the tie point of the different name end of former limit winding centre tap the latter half winding N2, and the negative terminal of input voltage Uin connects the negative electrode of diode D1, D2;
First structure exporting phase is: the collector electrode of anode connecting valve element S1, S3 of input voltage Uin, the emitter of negative terminal connecting valve element S2, S4 of input voltage Uin; The emitter of switch element S1 connects the anode of diode D3, the negative electrode of diode D3 connects the Same Name of Ends of first vice-side winding centre tap the first half winding, the different name end of first vice-side winding centre tap the first half winding N3 is connected with the Same Name of Ends of first vice-side winding centre tap the latter half winding N4, and its tie point is connected with one end of inductance L 1, the different name end of first vice-side winding centre tap the latter half winding is connected with the anode of diode D4, the collector electrode of the negative electrode connecting valve element S2 of diode D4; The emitter of switch element S3 is connected with the collector electrode of switch element S4, and the other end of its tie point and inductance L 1 and load are connected;
Second structure exporting phase is: the collector electrode of anode connecting valve element S5, S7 of input voltage Uin, the emitter of negative terminal connecting valve element S6, S8 of input voltage Uin; The emitter of switch element S5 connects the anode of diode D5, the negative electrode of diode D5 connects the Same Name of Ends of second vice-side winding centre tap the first half winding, the different name end of second vice-side winding centre tap the first half winding N5 is connected with the Same Name of Ends of second vice-side winding centre tap the latter half winding N6, and its tie point is connected with one end of inductance L 2, the different name end of second vice-side winding centre tap the latter half winding is connected with the anode of diode D6, the collector electrode of the negative electrode connecting valve element S6 of diode D6; The emitter of switch element S7 is connected with the collector electrode of switch element S8, and the other end of its tie point and inductance L 2 and load are connected;
3rd structure exporting phase is: the collector electrode of anode connecting valve element S9, S11 of input voltage Uin, the emitter of negative terminal connecting valve element S10, S12 of input voltage Uin; The emitter of switch element S9 connects the anode of diode D7, the negative electrode of diode D7 connects the Same Name of Ends of the 3rd vice-side winding centre tap the first half winding, the different name end of the 3rd vice-side winding centre tap the first half winding N7 is connected with the Same Name of Ends of the 3rd vice-side winding centre tap the latter half winding N8, and its tie point is connected with one end of inductance L 3, the different name end of the 3rd vice-side winding centre tap the latter half winding is connected with the anode of diode D8, the collector electrode of the negative electrode connecting valve element S10 of diode D8; The emitter of switch element S11 is connected with the collector electrode of switch element S12, and the other end of its tie point and inductance L 3 and load are connected;
Export for first: the first each switch element S1 ~ S4 exporting phase carries out alternate conduction and shutoff by controller according to the pulse sequence figure of Fig. 2; From circuit structure and above-mentioned pulse sequence figure, at S1, S2 blocking interval, energy in the winding of former limit feeds back to input power by diode D1, D2, and one of them conducting of controller control S3 or S4, resonance circuit is formed by the parasitic capacitance of inductance L and switching tube S1, S2, when the terminal voltage of S1, S2 is 0, conducting S1 or S2, realizes no-voltage open-minded; At S3, S4 blocking interval, one of them conducting of controller control S1 or S2, the resonance circuit formed by the parasitic capacitance of inductance L and switching tube S3, S4, conducting S3 or S4 when the terminal voltage of S3, S4 is 0, thus it is open-minded to realize no-voltage.Other two driving pulses exporting phase are according to corresponding relation advanced or delayed 120 ° respectively, and control mode and first exports similar, belongs to basic phase-shift control mode, repeats no more.
Switch element S can replace with MOSFET, and input power is chargeable storage, fuel cell or photovoltaic cell etc.Load can be three-phase alternating current load or further three phase rectifier is for DC load, and the form of rectification is all prior aries, repeats no more.
As Fig. 3, Fig. 4, Fig. 5, shown in Fig. 6 and Fig. 7, intensity adjustable lighting device comprises lamp stand 2 and is arranged on lampshade 1 and the lamp holder 5 on lamp stand 2 top, described lampshade 1 is that cross section is fan-shaped cell body and the circle centre position of its cross section is fixed on described lamp stand 2 top, the opening 11 of described lampshade 1 is positioned at the right-angle side side of its cross section, and leave angle between described opening 11 and described lamp stand 2, described lamp holder 5 is for being arranged on the fan-shaped block in described lampshade 1, its shape and size are corresponding with described lampshade 1 inner chamber, it is hinged that described lamp holder 5 two ends circle centre position and described lampshade 1 pass through hinge, the luminous end of described lamp holder 5 is its arcwall face 51 one end.
Also comprise knob assembly 4, described knob assembly 4 comprises knob 41, gear 42 and rotating shaft 43, the two is connected with described gear 42 center through described knob 41 by described rotating shaft 43, at described lampshade 1 sidewall, have gear type groove 12 near the circle centre position of described lampshade 1 cross section, described rotating shaft 43 is fixedly connected with described lamp holder 5 through described gear type groove 12 center away from one end of described knob 41, described lamp holder 5 is less than described gear type groove 12 width in the direction in which at the width in the direction that described rotating shaft 43 extends, and described lamp holder 5 and described hinge are slidably matched.
During use, lamp stand bottom is fixed on the base 3, rotate knob 41 and then drive lamp holder 5 precession or screw out lampshade 1, this size being the luminous end of lamp holder 5 exposes lampshade 1 changes, and realizes the brightness regulation of light, when lamp holder 5 rotates to appropriate location, knob 41 is promoted to rotating shaft 43 bearing of trend, gear 42 is coordinated with gear type groove 12, realizes the fixing of lamp holder 5 position, complete brightness regulation.
Above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment to invention has been detailed description, the those of ordinary skill in described field is to be understood that: still can modify to the specific embodiment of the present invention or replace on an equal basis, and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. an intensity adjustable lighting device, comprise lamp socket, Switching Power Supply, lamp stand and be arranged on lampshade and the lamp holder on lamp stand top, it is characterized in that, described Switching Power Supply comprises three-phase inverter.
2. lighting device as claimed in claim 1, it is characterized in that, described three-phase inverter comprises input voltage Uin, former limit and secondary all have tapped transformer T, switch element S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, diode D1, D2, D3, D4, D5, D6, D7, D8, inductance L 1, L2, L3 and controller, described each switching tube has antiparallel parasitic diode and parasitic capacitance, described transformer T has 3 vice-side winding, first vice-side winding is N3, N4, second vice-side winding is N5, N6, 3rd vice-side winding is N7, N8,
The different name end of former limit winding centre tap the first half winding connects the anode of diode D1, the Same Name of Ends of former limit winding centre tap the latter half winding connects the anode of diode D2, the Same Name of Ends of former limit winding centre tap the first half winding N1 is connected with the anode of input voltage Uin with the tie point of the different name end of former limit winding centre tap the latter half winding N2, and the negative terminal of input voltage Uin connects the negative electrode of diode D1, D2;
First structure exporting phase is: the collector electrode of anode connecting valve element S1, S3 of input voltage Uin, the emitter of negative terminal connecting valve element S2, S4 of input voltage Uin; The emitter of switch element S1 connects the anode of diode D3, the negative electrode of diode D3 connects the Same Name of Ends of first vice-side winding centre tap the first half winding, the different name end of first vice-side winding centre tap the first half winding N3 is connected with the Same Name of Ends of first vice-side winding centre tap the latter half winding N4, and its tie point is connected with one end of inductance L 1, the different name end of first vice-side winding centre tap the latter half winding is connected with the anode of diode D4, the collector electrode of the negative electrode connecting valve element S2 of diode D4; The emitter of switch element S3 is connected with the collector electrode of switch element S4, and the other end of its tie point and inductance L 1 and load are connected;
Second structure exporting phase is: the collector electrode of anode connecting valve element S5, S7 of input voltage Uin, the emitter of negative terminal connecting valve element S6, S8 of input voltage Uin; The emitter of switch element S5 connects the anode of diode D5, the negative electrode of diode D5 connects the Same Name of Ends of second vice-side winding centre tap the first half winding, the different name end of second vice-side winding centre tap the first half winding N5 is connected with the Same Name of Ends of second vice-side winding centre tap the latter half winding N6, and its tie point is connected with one end of inductance L 2, the different name end of second vice-side winding centre tap the latter half winding is connected with the anode of diode D6, the collector electrode of the negative electrode connecting valve element S6 of diode D6; The emitter of switch element S7 is connected with the collector electrode of switch element S8, and the other end of its tie point and inductance L 2 and load are connected;
3rd structure exporting phase is: the collector electrode of anode connecting valve element S9, S11 of input voltage Uin, the emitter of negative terminal connecting valve element S10, S12 of input voltage Uin; The emitter of switch element S9 connects the anode of diode D7, the negative electrode of diode D7 connects the Same Name of Ends of the 3rd vice-side winding centre tap the first half winding, the different name end of the 3rd vice-side winding centre tap the first half winding N7 is connected with the Same Name of Ends of the 3rd vice-side winding centre tap the latter half winding N8, and its tie point is connected with one end of inductance L 3, the different name end of the 3rd vice-side winding centre tap the latter half winding is connected with the anode of diode D8, the collector electrode of the negative electrode connecting valve element S10 of diode D8; The emitter of switch element S11 is connected with the collector electrode of switch element S12, and the other end of its tie point and inductance L 3 and load are connected.
3. lighting device as claimed in claim 2, it is characterized in that, described three phase controllers control switch S1 and S2 alternate conduction, S3 and S4 alternate conduction, S5 and S6 alternate conduction, S7 and S8 alternate conduction, S9 and S10 alternate conduction, S11 and S12 alternate conduction, each output is mutually by resonance circuit that the parasitic capacitance of respective inductance L 1, L2, L3 and each switch element is formed, the each switch element of conducting when the terminal voltage of each switch element is 0, thus it is open-minded to realize no-voltage.
4. lighting device as claimed in claim 2, it is characterized in that, described switching tube is IGBT or MOSFET.
5. lighting device as claimed in claim 2, it is characterized in that, described input voltage is storage battery, fuel cell or photovoltaic cell.
6. lighting device as claimed in claim 2, it is characterized in that, described diode is fast recovery diode or Schottky diode.
7. lighting device as claimed in claim 2, it is characterized in that, described load is three-phase alternating current load or rectified three-phase circuit.
8. lighting device as claimed in claim 1, it is characterized in that, described lampshade is that cross section is fan-shaped cell body and the circle centre position of its cross section is fixed on described lamp stand top, the opening of described lampshade is positioned at the right-angle side side of its cross section, and leave angle between described opening and described lamp stand, described lamp holder is the fan-shaped block be arranged in described lampshade, its shape and size are corresponding with described lampshade inner chamber, it is hinged that described lamp holder two ends circle centre position and described lampshade pass through hinge, and the luminous end of described lamp holder is its arcwall face one end.
9. lighting device as claimed in claim 1, it is characterized in that, also comprise knob assembly, described knob assembly comprises knob, gear and rotating shaft, the two is connected with gear centre through knob by rotating shaft, at described lampshade sidewall, have gear type groove near the circle centre position of described lampshade cross section, rotating shaft is fixedly connected with described lamp holder through gear type groove center away from one end of knob, and described lamp holder is less than described gear type groove width in the direction in which at the width in the direction that rotating shaft extends.
10. lighting device as claimed in claim 8, it is characterized in that, described lamp holder and described hinge are slidably matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510284713.XA CN104822213A (en) | 2014-12-12 | 2015-05-27 | Illuminating device with adjustable brightness |
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| CN201410857951 | 2014-12-12 | ||
| CN2014108579510 | 2014-12-12 | ||
| CN201510284713.XA CN104822213A (en) | 2014-12-12 | 2015-05-27 | Illuminating device with adjustable brightness |
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| CN104822213A true CN104822213A (en) | 2015-08-05 |
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| US4513224A (en) * | 1982-09-22 | 1985-04-23 | Pacific Power Control, Inc. | Fluorescent-lighting-system voltage controller |
| CN1581664A (en) * | 2003-08-08 | 2005-02-16 | 立锜科技股份有限公司 | Driving circuit and method for three-phase current thansformer |
| CN101232767A (en) * | 2007-08-06 | 2008-07-30 | 葛世潮 | Wide range continuous light regulating energy-saving desk lamp without stroboflash |
| CN201396707Y (en) * | 2009-03-28 | 2010-02-03 | 中山市力泰电子工业有限公司 | Shielding dimming lamp |
| CN101944745A (en) * | 2010-09-06 | 2011-01-12 | 北京理工大学 | Energy storage system and control method thereof |
| CN202257419U (en) * | 2011-08-26 | 2012-05-30 | 郑鑫鹤 | Notebook computer radiating rack |
| CN104539184A (en) * | 2014-12-12 | 2015-04-22 | 贵州永红航空机械有限责任公司 | Efficient transport refrigeration machine |
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2015
- 2015-05-27 CN CN201510284713.XA patent/CN104822213A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4513224A (en) * | 1982-09-22 | 1985-04-23 | Pacific Power Control, Inc. | Fluorescent-lighting-system voltage controller |
| CN1581664A (en) * | 2003-08-08 | 2005-02-16 | 立锜科技股份有限公司 | Driving circuit and method for three-phase current thansformer |
| CN101232767A (en) * | 2007-08-06 | 2008-07-30 | 葛世潮 | Wide range continuous light regulating energy-saving desk lamp without stroboflash |
| CN201396707Y (en) * | 2009-03-28 | 2010-02-03 | 中山市力泰电子工业有限公司 | Shielding dimming lamp |
| CN101944745A (en) * | 2010-09-06 | 2011-01-12 | 北京理工大学 | Energy storage system and control method thereof |
| CN202257419U (en) * | 2011-08-26 | 2012-05-30 | 郑鑫鹤 | Notebook computer radiating rack |
| CN104539184A (en) * | 2014-12-12 | 2015-04-22 | 贵州永红航空机械有限责任公司 | Efficient transport refrigeration machine |
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Application publication date: 20150805 |