CN103687129A - Piezoresistor based capacitor step-down driven LED lamp - Google Patents
Piezoresistor based capacitor step-down driven LED lamp Download PDFInfo
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- CN103687129A CN103687129A CN201310615515.8A CN201310615515A CN103687129A CN 103687129 A CN103687129 A CN 103687129A CN 201310615515 A CN201310615515 A CN 201310615515A CN 103687129 A CN103687129 A CN 103687129A
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- led lamp
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- resistance
- down driven
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Abstract
The invention discloses a piezoresistor based capacitor step-down driven LED lamp comprising a shell, an LED lamp and a driving circuit. The piezoresistor based capacitor step-down driven LED lamp is characterized in that in the driving circuit, a capacitor C1 is used for voltage stepdown and current limiting, and a VD1, a VD2, a VD3 and a VD4 are used for rectifying and can be selected from IN4007-series rectifier diodes for alternating-current rectification. The piezoresistor based capacitor step-down driven LED lamp has the advantages of scientific and reasonable design, simple driving circuit, a small quantity of parts, high reliability, low cost and the like.
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 capacitance decompression driving LED lamp of piezo-resistance.
The capacitance decompression driving LED lamp of piezo-resistance of the present invention, comprises housing, LED lamp, and drive circuit forms, and it is characterized in that: the effect of its drive circuit capacitor C 1 is step-down and current limliting; The effect of VD1～VD4 is rectification, for the whole VD1～VD4 of alternating current can be selected
1N4007series
rectifier diode.C2, C3 act as filtering, for the pulsating dc voltage after rectification is filtered into direct voltage stably.The withstand voltage of C2, C3 should be determined according to load voltage, is generally 1.2 times of load voltages, the size of its capacitance apparent load electric current and determining.Piezo-resistance Rv(or transition
voltage twin zener dioder) effect be by input
power supplythe high voltage pulse of middle moment is released over the ground, thereby protection LED is not punctured by instantaneous pressure.
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, C2, C3 are capacitor, VD1, VD2, VD3, VD4 is diode, R1, R2, is resistance, RV is variable resistor, LED1, LED2, LED3, LED4 is light-emitting diode.
Embodiment
As shown in Figure 1: C1, C2, C3 are capacitor, VD1, VD2, VD3, VD4 is diode, R1, R2, is resistance, RV is variable resistor, LED1, LED2, LED3, LED4 is light-emitting diode.The capacitance decompression driving LED lamp of piezo-resistance of the present invention, comprises housing, LED lamp, and drive circuit forms, and it is characterized in that: the effect of its drive circuit capacitor C 1 is step-down and current limliting; The effect of VD1～VD4 is rectification, for the whole VD1～VD4 of alternating current can be selected
1N4007series
rectifier diode.C2, C3 act as filtering, for the pulsating dc voltage after rectification is filtered into direct voltage stably.The withstand voltage of C2, C3 should be determined according to load voltage, is generally 1.2 times of load voltages, the size of its capacitance apparent load electric current and determining.Piezo-resistance Rv(or transition
voltage twin zener dioder) effect be by input
electricity sourcethe high voltage pulse of middle moment is released over the ground, thereby protection LED is not punctured by instantaneous pressure.Figure is depicted as a practical employing capacitance decompression
lEDdrive
circuit, this circuit is to be connected with pressure-sensitive with the difference of current major applications circuit
resistance(can be also that transient voltage suppresses
diode),
piezo-resistance(or transient voltage
twin zener dioder) can be wealthy in the wink of voltage jump (as thunder and lightning, large electricity consumption, establishing each starts etc.) effectively mutation current is released, thereby protection LED and other
transistor.The response time of transient voltage suppressor is generally nanosecond.The quantity of LED series connection is depending on its forward conduction voltage (VF),
220Vin alternating current circuit, can reach at most 80 left and right.The withstand voltage General Requirements of electric capacity is greater than the peak value of input supply voltage, in the alternating current circuit of 220V/50Hz, can select to be withstand voltagely
400Vabove
wash synthetic fibre electric capacityor paper dielectric capacitance.
Claims (1)
1. a capacitance decompression driving LED lamp for piezo-resistance, comprises housing, LED lamp, and drive circuit forms, and it is characterized in that: the effect of its drive circuit capacitor C 1 is step-down and current limliting; The effect of VD1～VD4 is rectification, for by the whole VD1～VD4 of alternating current, selects the rectifier diode of 1N4007 series; C2, C3 act as filtering, for the pulsating dc voltage after rectification is filtered into direct voltage stably; C2, C3 withstand voltage should be according to load voltage and 1.2 times of fixed load voltages, the size of its capacitance apparent load electric current and determining; The effect of piezo-resistance Rv is that the high voltage pulse of moment in input power is released over the ground, thereby protection LED is not punctured by instantaneous pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615515.8A CN103687129A (en) | 2013-11-27 | 2013-11-27 | Piezoresistor based capacitor step-down driven LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615515.8A CN103687129A (en) | 2013-11-27 | 2013-11-27 | Piezoresistor based capacitor step-down driven LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103687129A true CN103687129A (en) | 2014-03-26 |
Family
ID=50323054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310615515.8A Pending CN103687129A (en) | 2013-11-27 | 2013-11-27 | Piezoresistor based capacitor step-down driven LED lamp |
Country Status (1)
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| CN (1) | CN103687129A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007663A (en) * | 2015-07-30 | 2015-10-28 | 黄克亚 | Step-down LED driver |
| CN109219183A (en) * | 2017-07-06 | 2019-01-15 | 深圳市海洋王照明工程有限公司 | A kind of nuclear power environment LED lamp device and its driving circuit |
| CN112351544A (en) * | 2020-11-17 | 2021-02-09 | 广西淘亮照明科技有限责任公司 | LED illuminating lamp directly driven by pulsating direct current |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1688186A (en) * | 2005-03-23 | 2005-10-26 | 天津大学 | Driving circuit for 220V AC LED lamp |
-
2013
- 2013-11-27 CN CN201310615515.8A patent/CN103687129A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1688186A (en) * | 2005-03-23 | 2005-10-26 | 天津大学 | Driving circuit for 220V AC LED lamp |
Non-Patent Citations (2)
| Title |
|---|
| 不详: "LED电路图设计制作大全", 《百度文库》, 9 May 2013 (2013-05-09), pages 5 - 6 * |
| 马存云: "几款市电供电的低成本LED驱动电路", 《光源与照明》, no. 4, 30 December 2007 (2007-12-30), pages 19 - 1 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007663A (en) * | 2015-07-30 | 2015-10-28 | 黄克亚 | Step-down LED driver |
| CN109219183A (en) * | 2017-07-06 | 2019-01-15 | 深圳市海洋王照明工程有限公司 | A kind of nuclear power environment LED lamp device and its driving circuit |
| CN109219183B (en) * | 2017-07-06 | 2021-08-13 | 深圳市海洋王照明工程有限公司 | Nuclear power environment LED lamp device and drive circuit thereof |
| CN112351544A (en) * | 2020-11-17 | 2021-02-09 | 广西淘亮照明科技有限责任公司 | LED illuminating lamp directly driven by pulsating direct current |
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Application publication date: 20140326 |