CN104935178A - Lighting device with adjustable height - Google Patents
Lighting device with adjustable height Download PDFInfo
- Publication number
- CN104935178A CN104935178A CN201510279856.1A CN201510279856A CN104935178A CN 104935178 A CN104935178 A CN 104935178A CN 201510279856 A CN201510279856 A CN 201510279856A CN 104935178 A CN104935178 A CN 104935178A
- Authority
- CN
- China
- Prior art keywords
- diode
- vice
- lighting device
- winding
- centre tap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The invention provides a lighting device with adjustable height. The lighting device comprises a lamp socket, a switch power supply, a lamp holder, and a lamp pole, the lighting device also comprises a lamp pole containing pipe and a position-adjusting cylinder, the lamp pole is an outer threaded rod, and the switch power supply comprises a three-phase resonant converter with a center-tapped transformer. According to the lighting device with the adjustable height, the switch power supply comprising the three-phase resonant converter with the center-tapped transformer is provided, the loss is low, the power density is high, the service lifetime of the lighting device can be extended, the reliability of the lighting device can be improved, and the requirement of the height of the lighting device in different environments for users can be met.
Description
Technical field
The invention belongs to illuminations field, particularly a kind of height adjustable lighting device.
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 height, cannot meet end user's demand of different height and height of seat.
Summary of the invention
Technical problem to be solved by this invention, for the defect in aforementioned background art and deficiency, a kind of high reliability 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 main regulation lighting device height.
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 high reliability lighting device, comprise the lamp socket, Switching Power Supply, lamp holder and the lamp stand that connect successively from top to bottom, comprise lamp stand and hold pipe and positioning cylinder, described lamp stand is external thread rod, and described Switching Power Supply comprises the three-phase resonate converter with interphase reactor transformer.
Further, described its topological structure of three-phase resonate converter 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.
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;
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; 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 lamp stand holds pipe vertically to being arranged on described lamp socket, and its internal diameter is greater than described lamp stand cross-sectional diameter, holds pipe top outer wall be provided with a circle chute at described lamp stand,
Described positioning cylinder one end is enclosed within described lamp stand and holds pipe top, and is provided with at the inwall of described this one end of positioning cylinder the draw runner that a circle coordinates with described slide,
The other end of described positioning cylinder is provided with the internal thread coordinated with the external screw thread of described lamp stand.
Further, be surrounded by around described lamp stand handle of holding with a firm grip near one end of described lamp holder at described lamp stand.
Further, wire is connected with described lamp holder with lamp stand inside through lamp stand appearance pipe from top to bottom successively.
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 height can main regulation, meets the requirement of different users's illumination apparatus height under various circumstances.
Accompanying drawing explanation
Fig. 1: the structural representation of the Switching Power Supply of lighting device of the present invention;
Fig. 2: the control impuls sequential chart of switch element S1, S2, S3, S4;
Fig. 3: the front view schematic diagram of height adjustable lighting device of the present invention;
Fig. 4: lamp stand of the present invention holds the schematic diagram that pipe, positioning cylinder and lamp stand coordinate;
Fig. 5: the end view schematic diagram of height adjustable lighting device of the present invention.
Wherein, 1-lamp holder, 2-handle of holding with a firm grip, 3-lamp stand, 4-positioning cylinder, 41-draw runner, 5-lamp stand holds pipe, 6-lamp socket, 7-wire, 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 mains switch of high reliability lighting device of the present invention comprises input voltage Uin, former limit and secondary and all has tapped transformer T, switch element S1, S2, S3, S4, diode D1, D2, D3, D4, inductance L.Above-mentioned switch element is IGBT, and diode is fast recovery diode.
1 the power switch structure in high reliability lighting device of the present invention is elaborated by reference to the accompanying drawings, three-phase resonate converter comprise 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, shown in Fig. 4 and Fig. 5, height adjustable lighting device comprises the lamp socket 6 connected successively from top to bottom, lamp stand 3 and lamp holder 1, lamp stand holds pipe 5 and positioning cylinder 4, described lamp stand 3 is external thread rod, described lamp stand holds pipe 5 vertically to being arranged on described lamp socket 6, its internal diameter is greater than described lamp stand 3 cross-sectional diameter, hold pipe 5 top outer wall at described lamp stand and be provided with a circle chute, described positioning cylinder 4 one end is enclosed within described lamp stand and holds pipe 5 top, and be provided with at the inwall of described this one end of positioning cylinder 4 draw runner 41 that a circle coordinates with described slide, the other end of described positioning cylinder 4 is provided with the internal thread coordinated with the external screw thread of described lamp stand 3,
Be surrounded by around described lamp stand 3 handle 2 of holding with a firm grip near one end of described lamp holder 1 at described lamp stand 3;
Wire 7 holds pipe 5 through lamp stand successively from top to bottom and is connected with described lamp holder 1 with lamp stand 3 inside.
When wanting raise or reduce lamp holder 1, as long as one holds handle 2 of holding with a firm grip, another hand-screw modulation position cylinder 4, can realize the upper and lower displacement of lamp stand 3 and then realize the liter of lamp holder 1 or fall.
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. a height adjustable lighting device, comprises lamp socket, Switching Power Supply, lamp holder and lamp stand, it is characterized in that, described lighting device comprises lamp stand and holds pipe and positioning cylinder, and described lamp stand is external thread rod, and 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 all adopts 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 lamp stand holds pipe vertically to being arranged on described lamp socket, its internal diameter is greater than described lamp stand cross-sectional diameter, hold pipe top outer wall at described lamp stand and be provided with a circle chute, described positioning cylinder one end is enclosed within described lamp stand and holds pipe top, and is provided with at the inwall of described this one end of positioning cylinder the draw runner that a circle coordinates with described slide, and the other end of described positioning cylinder is provided with the internal thread coordinated with the external screw thread of described lamp stand.
9. lighting device as claimed in claim 1, is characterized in that, be surrounded by handle of holding with a firm grip at described lamp stand near one end of described lamp holder around described lamp stand.
10. lighting device as claimed in claim 1, is characterized in that, wire holds pipe through lamp stand successively from top to bottom and is connected with described lamp holder with lamp stand inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510279856.1A CN104935178A (en) | 2014-12-12 | 2015-05-27 | Lighting device with adjustable height |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014108577159 | 2014-12-12 | ||
| CN201410857715 | 2014-12-12 | ||
| CN201510279856.1A CN104935178A (en) | 2014-12-12 | 2015-05-27 | Lighting device with adjustable height |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104935178A true CN104935178A (en) | 2015-09-23 |
Family
ID=54122196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510279856.1A Pending CN104935178A (en) | 2014-12-12 | 2015-05-27 | Lighting device with adjustable height |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104935178A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2527856Y (en) * | 2001-12-28 | 2002-12-25 | 东莞黄江北岸杨昇灯饰厂 | Desk lamp with movable lamp holder |
| CN1592061A (en) * | 2003-09-01 | 2005-03-09 | 台达电子工业股份有限公司 | Push-pull converter and method for power supply, uninterruptible power supply system |
| US20070216385A1 (en) * | 2006-03-14 | 2007-09-20 | Energy Conservation Technologies, Inc. | Switch mode power converter having multiple inductor windings equipped with snubber circuits |
| CN201498503U (en) * | 2009-07-02 | 2010-06-02 | 冯凯 | Lamp bulb installing tool |
| US20120249001A1 (en) * | 2011-03-31 | 2012-10-04 | Mitsumi Electric Co., Ltd. | Lighting power supply device |
| CN104009645A (en) * | 2014-06-16 | 2014-08-27 | 南京航空航天大学 | A series-parallel hybrid dual-output LLC resonant converter |
-
2015
- 2015-05-27 CN CN201510279856.1A patent/CN104935178A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2527856Y (en) * | 2001-12-28 | 2002-12-25 | 东莞黄江北岸杨昇灯饰厂 | Desk lamp with movable lamp holder |
| CN1592061A (en) * | 2003-09-01 | 2005-03-09 | 台达电子工业股份有限公司 | Push-pull converter and method for power supply, uninterruptible power supply system |
| US20070216385A1 (en) * | 2006-03-14 | 2007-09-20 | Energy Conservation Technologies, Inc. | Switch mode power converter having multiple inductor windings equipped with snubber circuits |
| CN201498503U (en) * | 2009-07-02 | 2010-06-02 | 冯凯 | Lamp bulb installing tool |
| US20120249001A1 (en) * | 2011-03-31 | 2012-10-04 | Mitsumi Electric Co., Ltd. | Lighting power supply device |
| CN104009645A (en) * | 2014-06-16 | 2014-08-27 | 南京航空航天大学 | A series-parallel hybrid dual-output LLC resonant converter |
Non-Patent Citations (1)
| Title |
|---|
| 刘飞等: "光伏并网发电系统若干技术问题的研究", 《太阳能》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104202862B (en) | Single-stage type LED drive power supply without electrolytic capacitor | |
| CN103762873B (en) | Based on the high frequency isolation type three-level inverter of Boost | |
| CN105896993A (en) | High-gain isolation type direct-current converter for multi-unit diode capacitor network | |
| TW201246774A (en) | Circuit for converting a direct current voltage to an alternating current voltage | |
| CN103606956A (en) | Power decoupling circuit for photovoltaic grid-connected inverter | |
| CN108183603A (en) | A kind of single-stage is without bridge Sofe Switch resonance isolated form circuit of power factor correction | |
| CN102263513B (en) | AC-DC isolated conversion circuit | |
| CN106899203B (en) | Forward five-level inverter | |
| CN104822211A (en) | High-reliability LED illuminating device | |
| CN204442168U (en) | A kind of based on without bridge CUK isolated form Three Phase Power Factor Correction Converter | |
| CN206743105U (en) | Positive activation type five-electrical level inverter | |
| CN104935178A (en) | Lighting device with adjustable height | |
| CN104848074A (en) | Height-adjustable lighting device | |
| CN104967304A (en) | An isolated three-phase power factor correction converter based on bridgeless CUK | |
| CN205407612U (en) | High power factor recommends DC power supply topology circuit | |
| CN108023479A (en) | A kind of power converter circuit | |
| CN209283095U (en) | A kind of switching capacity type high-gain DC/DC converter based on coupling inductance | |
| CN104930437A (en) | High-efficiency extensible illumination device | |
| CN104968066A (en) | Telescopic lighting device | |
| CN201577029U (en) | Student used experiment power supply | |
| CN207743866U (en) | A kind of power converter | |
| CN206962708U (en) | A kind of primary series connection secondary commutation parallel connection inverse-excitation type push rod power supply changeover device | |
| CN104868752A (en) | High-efficiency multifunctional lighting device | |
| CN104837279A (en) | High-reliability storage desk lamp | |
| CN203933431U (en) | Work in the low noise LED power supply under electronic switch and thyristor chopper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150923 |
|
| RJ01 | Rejection of invention patent application after publication |