CN103607812A - Resistance capacitance step-down driving LED energy saving lamp - Google Patents
Resistance capacitance step-down driving LED energy saving lamp Download PDFInfo
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- CN103607812A CN103607812A CN201310544061.XA CN201310544061A CN103607812A CN 103607812 A CN103607812 A CN 103607812A CN 201310544061 A CN201310544061 A CN 201310544061A CN 103607812 A CN103607812 A CN 103607812A
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- saving lamp
- energy saving
- resistance capacitance
- capacitor
- led energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention provides a resistance capacitance step-down driving LED energy saving lamp which comprises a shell, an LED lamp and a driving circuit. The resistance capacitance step-down driving LED energy saving lamp is characterized in that the capacity reactance current limiting is utilized by the driving circuit, the current is limited by a capacitor, and two end voltage of the capacitor and a load are dynamically distributed. The resistance capacitance step-down driving LED energy saving lamp has the advantages of scientific and reasonable design, simple driving circuit, few components, high reliability, and low cost.
Description
Technical field
The invention belongs to a kind of decorating lighting lamp, relate to a kind of high-power LED light source energy-saving lamp.
Background technology
LED wall lamp is again line style LED flood light etc., because its profile strip, also there is people that it is called to LED line lamp, mainly only to use for doing building decoration illumination, be used in addition sketching the contours the profile of heavy construction, traditional prior art is all with power supply of single configuration, and manufacture process bothers relatively, and use is the not easy-maintaining damaging.So make attendant's workload increase, the numerous prices of the similar LED light fixture of existing market kind are also relatively costly, the fail safe of using at product and all process imperfection in short problem the useful life of product, can not be fully and lifetime of LED match, lack a kind of deficiencies such as power supply of long service life.
Summary of the invention
The object of the invention is, for the deficiencies in the prior art, proposes a kind of resistance-capacitance depressurization driving LED electricity-saving lamp.
Resistance-capacitance depressurization driving LED electricity-saving lamp of the present invention, comprises housing, LED lamp, and drive circuit forms, and it is characterized in that: its drive circuit is to utilize capacitive reactance current limliting, plays a Limited Current and dynamic assignment capacitor and load both end voltage circuit form by capacitor.
The present invention's beneficial effect compared with prior art: have design science, reasonable, drive circuit simple Devices is few, reliability is strong, low cost and other advantages.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described, but embodiments of the present invention are not limited to this.
Fig. 1-circuit diagram
In figure: C1 is decompression capacitor, D1,2,3,4 is bridge rectifier diode, and ZD1 is voltage stabilizing didoe, and R1 is the charge discharging resisting resistance of C1 after power cutoff.
Embodiment
As shown in Figure 1: C1 is decompression capacitor, D1,2,3,4 is bridge rectifier diode, and ZD1 is voltage stabilizing didoe, and R1 is the charge discharging resisting resistance of C1 after power cutoff.
Device is selected: during circuit design, should first measure the exact value of load current, then reference example is selected the capacity of decompression capacitor.Because the electric current I o providing to load by decompression capacitor C1, be actually that to flow through the charging and discharging currents Ic.C1 capacity of C1 larger, capacitive reactance Xc is less, and the charge and discharge electric current of the C1 that flows through is larger.When load current Io is less than the charging and discharging currents of C1, unnecessary electric current will flow through voltage-stabiliser tube, if easily cause voltage-stabiliser tube to burn when the maximum permissible current Idmax of voltage-stabiliser tube is less than Ic-Io.For guaranteeing C1 reliably working, selection that it is withstand voltage should be greater than the supply voltage of twice.The selection of bleeder resistance R1 must guarantee the electric charge of releasing in official hour on C1.
Actual parameter computational methods:
Known C1 is 0.33 μ F, exchanges and is input as 220V/50Hz, asks the maximum current of circuit energy supply load.
The capacitive reactance Xc of C1 in circuit is:
Xc=1/（2πf?C）=1/（2*3.14*50*0.33*10-6）=9.65K
The charging current (Ic) that flows through capacitor C1 is:
Ic=U/Xc=220/9.65=22mA.
Should note following some:
According to the operating frequency of the size of current of load and alternating current, choose suitable electric capacity, rather than according to voltage and the power of load, current limiting capacitance must adopt polarity free capacitor, can not adopt electrochemical capacitor.And the withstand voltage of electric capacity must be more than 400V, optimal electric capacity is polypropylene metal thin film capacitor.Capacitance decompression can not be generally used for the following low-power applications occasion of 5W for high-power condition, and capacitance decompression is not suitable for dynamic load condition, and capacitance decompression is not suitable for capacitive and inductive load, is applicable to univoltage application in application aspect the driving of LED power supply.
The present invention, because device is few, largely reduces product bug, manufacture simple, from the cost calculation of power material, than at the bottom of prior art more than 10 times.
Claims (1)
1. a resistance-capacitance depressurization driving LED electricity-saving lamp, comprises housing, LED lamp, and drive circuit forms, and it is characterized in that: its drive circuit is to utilize capacitive reactance current limliting, plays a Limited Current and dynamic assignment capacitor and load both end voltage circuit form by capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310544061.XA CN103607812A (en) | 2013-11-06 | 2013-11-06 | Resistance capacitance step-down driving LED energy saving lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310544061.XA CN103607812A (en) | 2013-11-06 | 2013-11-06 | Resistance capacitance step-down driving LED energy saving lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103607812A true CN103607812A (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310544061.XA Pending CN103607812A (en) | 2013-11-06 | 2013-11-06 | Resistance capacitance step-down driving LED energy saving lamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582146A (en) * | 2014-12-17 | 2015-04-29 | 深圳市众明半导体照明有限公司 | Led drive circuit |
| CN105407612A (en) * | 2015-12-16 | 2016-03-16 | 黄月华 | Integrative sound control time-delay road lamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090184669A1 (en) * | 2007-07-30 | 2009-07-23 | Ge Investment Co., Ltd. | Light emitting diode lamp |
| CN201331030Y (en) * | 2009-02-11 | 2009-10-21 | 东莞市龙立祥照明科技有限公司 | LED circuit |
| CN201335285Y (en) * | 2008-11-27 | 2009-10-28 | 惠州市纯英半导体照明科技有限公司 | Combined LED illuminating device with high luminous efficiency and low brightness |
| CN202769769U (en) * | 2012-09-21 | 2013-03-06 | 浙江帅康电气股份有限公司 | Extractor hood of improved light emitting diode (LED) lighting lamp |
-
2013
- 2013-11-06 CN CN201310544061.XA patent/CN103607812A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090184669A1 (en) * | 2007-07-30 | 2009-07-23 | Ge Investment Co., Ltd. | Light emitting diode lamp |
| CN201335285Y (en) * | 2008-11-27 | 2009-10-28 | 惠州市纯英半导体照明科技有限公司 | Combined LED illuminating device with high luminous efficiency and low brightness |
| CN201331030Y (en) * | 2009-02-11 | 2009-10-21 | 东莞市龙立祥照明科技有限公司 | LED circuit |
| CN202769769U (en) * | 2012-09-21 | 2013-03-06 | 浙江帅康电气股份有限公司 | Extractor hood of improved light emitting diode (LED) lighting lamp |
Non-Patent Citations (1)
| Title |
|---|
| 维库电子: "小功率LED驱动电源技术拓扑方案", 《HTTP://POWER.CNLEDW.COM/TECH/NEWSDETAIL-32778.HTML》, 27 December 2012 (2012-12-27), pages 1 - 6 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582146A (en) * | 2014-12-17 | 2015-04-29 | 深圳市众明半导体照明有限公司 | Led drive circuit |
| CN105407612A (en) * | 2015-12-16 | 2016-03-16 | 黄月华 | Integrative sound control time-delay road lamp |
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Application publication date: 20140226 |