CN204131769U - Export stable constant current LED power supplies - Google Patents
Export stable constant current LED power supplies Download PDFInfo
- Publication number
- CN204131769U CN204131769U CN201420661829.1U CN201420661829U CN204131769U CN 204131769 U CN204131769 U CN 204131769U CN 201420661829 U CN201420661829 U CN 201420661829U CN 204131769 U CN204131769 U CN 204131769U
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- Prior art keywords
- circuit
- resistance
- rectifier bridge
- led
- parallel
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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
Abstract
The utility model discloses the stable constant current LED power supplies of a kind of output, one end of mains supply is connected with an input of rectifier bridge with resistance R by electric capacity C1 parallel with one another, the other end of mains supply is directly connected with another input of rectifier bridge, be parallel with filter capacitor C2, pressure limiting diode D5, piezo-resistance RV and load LED lamp between two outputs of rectifier bridge successively, the cathode output end of rectifier bridge is also in series with high-frequency suppressing magnetic bead L.The high-frequency suppressing magnetic bead L of the utility model series connection effectively can suppress high frequency voltage, and filter capacitor C2 also can filtering clutter further, guarantees that the output of LED power is more smooth-going; Adopt diode voltage limiting mode to replace conventional serial resistance, reduce power supply caloric value and loss; When there is momentary surges voltage, the resistance value of piezo-resistance RV reduces rapidly, and instantaneous high pressure is absorbed by piezo-resistance RV, serves effective protective effect to LED load.
Description
Technical field
The utility model relates to the stable constant current LED power supplies of a kind of output.
Background technology
Comparatively conventional incandescent and electricity-saving lamp have energy-conserving and environment-protective to LED, long service life, employing solid encapsulation be convenient to the advantages such as transport and installation, under the guide of the strategy of sustainable development, energy-saving and emission-reduction thought is constantly promoted, current country more and more payes attention to lighting energy saving and environmental issue, carrying out energetically using LED bulb, along with the development of LED technology, electricity-saving lamp and incandescent lamp will be replaced by LED in the near future.
LED power is used for providing driving DC voltage for LED, and its stability exported directly affects job stability and the useful life of LED.But there is following defect in traditional LED power:
1) adopt series resistance to carry out current limliting, the electric energy of resistance loss is comparatively large, causes larger energy loss, and cannot be applicable to high-powered LED lamp;
2) effectively cannot absorb surge voltage, the instantaneous voltage at LED load two ends increases severely, and is easily burned;
3) effectively cannot suppress high frequency voltage, the output of LED power is smooth-going not, LED load job insecurity and with damage.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of can effectively suppress high frequency and momentary surges voltage, export stable constant current LED power supplies.
The purpose of this utility model is achieved through the following technical solutions: export stable constant current LED power supplies; comprise reduction voltage circuit, rectification circuit, high-frequency suppressing circuit, filter circuit, pressure limiting circuit and anti-surge protection circuit; the input of reduction voltage circuit connects mains supply, and the output of reduction voltage circuit is connected with load LED lamp with anti-surge protection circuit by rectification circuit, high-frequency suppressing circuit, filter circuit, pressure limiting circuit successively.
Described reduction voltage circuit comprises electric capacity C1 parallel with one another and resistance R; Rectification circuit is the rectifier bridge be made up of diode D1, D2, D3, D4; High-frequency suppressing circuit comprises high-frequency suppressing magnetic bead L; Filter circuit comprises filter capacitor C2; Pressure limiting circuit comprises pressure limiting diode D5; Anti-surge protection circuit comprises piezo-resistance RV;
One end of mains supply is connected with an input of rectifier bridge with resistance R by electric capacity C1 parallel with one another, the other end of mains supply is directly connected with another input of rectifier bridge, be parallel with filter capacitor C2, pressure limiting diode D5, piezo-resistance RV and load LED lamp between two outputs of rectifier bridge successively, the cathode output end of rectifier bridge is also in series with high-frequency suppressing magnetic bead L.
Described load LED lamp is made up of multiple LED string, is in series with multiple LED lamp bead in each LED string, and each LED string is connected in parallel between two outputs of rectifier bridge respectively.
The beneficial effects of the utility model are:
1) the high-frequency suppressing magnetic bead L connected effectively can suppress high frequency voltage, and filter capacitor C2 also can filtering clutter further, guarantees that the output of LED power is more smooth-going;
2) adopt diode voltage limiting mode to replace conventional serial resistance, reduce power supply caloric value and loss;
3) when there is momentary surges voltage, the resistance value of piezo-resistance RV reduces rapidly, and instantaneous high pressure is absorbed by piezo-resistance RV, serves effective protective effect to LED load.
Accompanying drawing explanation
Fig. 1 is the utility model circuit theory diagrams.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection range of the present utility model is not limited to the following stated.
Export stable constant current LED power supplies; comprise reduction voltage circuit, rectification circuit, high-frequency suppressing circuit, filter circuit, pressure limiting circuit and anti-surge protection circuit; the input of reduction voltage circuit connects 220V AC mains supply, and the output of reduction voltage circuit is connected with load LED lamp with anti-surge protection circuit by rectification circuit, high-frequency suppressing circuit, filter circuit, pressure limiting circuit successively.
As shown in Figure 1, described reduction voltage circuit comprises electric capacity C1 parallel with one another and resistance R; Rectification circuit is the rectifier bridge be made up of diode D1, D2, D3, D4; High-frequency suppressing circuit comprises high-frequency suppressing magnetic bead L; Filter circuit comprises filter capacitor C2; Pressure limiting circuit comprises pressure limiting diode D5; Anti-surge protection circuit comprises piezo-resistance RV.
One end of mains supply is connected with an input of rectifier bridge with resistance R by electric capacity C1 parallel with one another, the other end of mains supply is directly connected with another input of rectifier bridge, be parallel with filter capacitor C2, pressure limiting diode D5, piezo-resistance RV and load LED lamp between two outputs of rectifier bridge successively, the cathode output end of rectifier bridge is also in series with high-frequency suppressing magnetic bead L.The high-frequency suppressing magnetic bead L of series connection effectively can suppress high frequency voltage, and filter capacitor C2 in parallel also can filtering clutter further; When there is momentary surges voltage, the resistance value of piezo-resistance RV in parallel reduces rapidly, and instantaneous high pressure is absorbed by piezo-resistance RV, serves effective protective effect to LED load.
Described load LED lamp is made up of multiple LED string, is in series with multiple LED lamp bead in each LED string, and each LED string is connected in parallel between two outputs of rectifier bridge respectively.
The above is only preferred implementation of the present utility model, be to be understood that the utility model is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from spirit and scope of the present utility model, then all should in the protection range of the utility model claims.
Claims (3)
1. export stable constant current LED power supplies; it is characterized in that: comprise reduction voltage circuit, rectification circuit, high-frequency suppressing circuit, filter circuit, pressure limiting circuit and anti-surge protection circuit; the input of reduction voltage circuit connects mains supply, and the output of reduction voltage circuit is connected with load LED lamp with anti-surge protection circuit by rectification circuit, high-frequency suppressing circuit, filter circuit, pressure limiting circuit successively.
2. the stable constant current LED power supplies of output according to claim 1, is characterized in that: described reduction voltage circuit comprises electric capacity C1 parallel with one another and resistance R; Rectification circuit is the rectifier bridge be made up of diode D1, D2, D3, D4; High-frequency suppressing circuit comprises high-frequency suppressing magnetic bead L; Filter circuit comprises filter capacitor C2; Pressure limiting circuit comprises pressure limiting diode D5; Anti-surge protection circuit comprises piezo-resistance RV;
One end of mains supply is connected with an input of rectifier bridge with resistance R by electric capacity C1 parallel with one another, the other end of mains supply is directly connected with another input of rectifier bridge, be parallel with filter capacitor C2, pressure limiting diode D5, piezo-resistance RV and load LED lamp between two outputs of rectifier bridge successively, the cathode output end of rectifier bridge is also in series with high-frequency suppressing magnetic bead L.
3. the stable constant current LED power supplies of output according to claim 1, it is characterized in that: described load LED lamp is made up of multiple LED string, be in series with multiple LED lamp bead in each LED string, each LED string is connected in parallel between two outputs of rectifier bridge respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420661829.1U CN204131769U (en) | 2014-11-07 | 2014-11-07 | Export stable constant current LED power supplies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420661829.1U CN204131769U (en) | 2014-11-07 | 2014-11-07 | Export stable constant current LED power supplies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204131769U true CN204131769U (en) | 2015-01-28 |
Family
ID=52388081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420661829.1U Expired - Fee Related CN204131769U (en) | 2014-11-07 | 2014-11-07 | Export stable constant current LED power supplies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204131769U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070245A (en) * | 2015-07-31 | 2015-11-18 | 苏州合欣美电子科技有限公司 | Static LED display screen driving circuit |
| CN108601131A (en) * | 2017-11-27 | 2018-09-28 | 浙江阳光美加照明有限公司 | TRIAC light modulator electric current holding circuits and use its linearity light adjusting driving circuit |
-
2014
- 2014-11-07 CN CN201420661829.1U patent/CN204131769U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070245A (en) * | 2015-07-31 | 2015-11-18 | 苏州合欣美电子科技有限公司 | Static LED display screen driving circuit |
| CN108601131A (en) * | 2017-11-27 | 2018-09-28 | 浙江阳光美加照明有限公司 | TRIAC light modulator electric current holding circuits and use its linearity light adjusting driving circuit |
| CN108601131B (en) * | 2017-11-27 | 2023-11-10 | 浙江阳光美加照明有限公司 | TRIAC dimmer current maintaining circuit and linear dimming driving circuit using same |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20171107 |