CN201657424U - LED lighting circuit - Google Patents
LED lighting circuit Download PDFInfo
- Publication number
- CN201657424U CN201657424U CN2010201522330U CN201020152233U CN201657424U CN 201657424 U CN201657424 U CN 201657424U CN 2010201522330 U CN2010201522330 U CN 2010201522330U CN 201020152233 U CN201020152233 U CN 201020152233U CN 201657424 U CN201657424 U CN 201657424U
- Authority
- CN
- China
- Prior art keywords
- power supply
- lighting circuit
- led lighting
- light fixture
- current control
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
Abstract
The utility model is suitable for the technical field of illumination and provides an LED lighting circuit. The LED lighting circuit comprises an LED lamp link circuit and a constant-current control chip, wherein the constant-current control chip is used for real-time monitoring and regulating the current intensity of the LED lamp link circuit, and is connected between the positive input terminal and the negative input terminal of a power supply after being connected in series with the LED lamp link circuit. The LED lighting circuit adopts the integrative constant-current control chip to drive the constant current of an LED lamp to work, has the advantages of high efficiency, reliability, cheapness, simplicity, portability and the like, integrates the advantages of a switching power supply and overcomes the defects of the switching power supply simultaneously.
Description
Technical field
The utility model belongs to lighting technical field, relates in particular to a kind of LED lighting circuit.
Background technology
Be accompanied by the development of human civilization, it is ubiquitous to throw light on, common illumination or signal lamp with ordinary incandescent lamp or fluorescent lamp as lighting source, there are short, some shortcomings such as power consumption is high, luminous efficiency is low, shock resistance vibrations poor performance of life-span in this class light source, operating voltage all is civil power usually, can't be used in the low-voltage place, especially in the time of all lighting demands of particular field, can not satisfy people's demand far away.Current social resources are deficient day by day, human requirement to illumination also improves day by day, environmental protection, energy-conservation, light source is also given birth to regard to assentment efficiently, so the LED technology is ripe and application and each place, all be to adopt the DC-DC wave chopping technology to drive common LED at present in the place of low-voltage, it has that power consumption is little, efficient is high, reliable and stable, advantage such as the unit power volume is little, in light weight, but its cost height, circuit complexity, fragile, stronger shortcomings such as High-frequency Interference are arranged, brought inconvenience to the user.
The utility model content
The purpose of this utility model is to provide a kind of LED lighting circuit, aim to provide a kind of efficient, cheap, simple, light, drive safe and reliable LED lighting circuit.
A kind of LED lighting circuit comprises a LED light fixture link, also comprises:
One monitors and adjusts the constant current control chip of the size of current of described LED light fixture link in real time, its be connected between the positive and negative input of power supply after described LED light fixture link is connected.
Further, described constant current control chip comprises:
Metal-oxide-semiconductor, its source electrode is electrically connected with the positive input terminal of power supply, and its drain electrode is electrically connected with described LED light fixture link;
Control the Current Control and the temperature compensation unit of described metal-oxide-semiconductor conducting or shutoff by detecting size of current, it is connected in parallel between the source electrode and drain electrode of described metal-oxide-semiconductor, and its control end is connected with the grid of described metal-oxide-semiconductor simultaneously.
Further, be parallel with parasitic diode between the source electrode of described metal-oxide-semiconductor and the drain electrode.
Further, be connected by a protective tube between the positive input terminal of described constant current control chip and power supply.
Further, be connected by an anti-reverse diode between the negative input end of described LED light fixture link and power supply, the negative electrode of described anti-reverse diode is connected with the negative input end of power supply.
Further, between the positive and negative input of power supply, be parallel with an electrochemical capacitor and/or a high frequency capacitance.
In the utility model, adopt the constant current work of incorporate constant current control chip driving LED light fixture, have advantages such as efficient, reliable, cheap, simple, light, also overcome the shortcoming of Switching Power Supply when having planned as a whole the Switching Power Supply advantage.Simultaneously electric power loop being provided with of pipe of insuring can prevent that when short trouble fault from further enlarging.The power-input connects an anti-reverse diode can be in the situation deenergization loop of power positive cathode reversal connection.By guaranteeing then that at both ends of power electrochemical capacitor in parallel and/or high frequency capacitance steadily high frequency clutter in the power supply signal is coupled in fluctuation and filtering to input supply voltage.
Description of drawings
Fig. 1 is the structure principle chart of the LED lighting circuit that provides of the utility model embodiment;
Fig. 2 is the structure principle chart of constant current control chip among Fig. 1.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Among the utility model embodiment, produce constant lasting electric current by a constant current control chip, thus the constant current work of driving LED light fixture.
Fig. 1 shows the structural principle of the LED lighting circuit that the utility model embodiment provides, and for convenience of description, only shows the part relevant with present embodiment.
With reference to Fig. 1, between the positive input terminal Vin+ of power supply and negative input end Vin-, be connected with a constant current control chip U1 and a LED light fixture link, the some LED light fixture serial connections of this LED light fixture chain route form, D1 as shown in Figure 1, D2, D3, D4, D5, D6, D7, constant current control chip U1 is used for monitoring in real time and adjusts the size of current of LED light fixture link, guarantees the reliable and stable work of LED light fixture.
The structural principle of constant current control chip U1 comprises metal-oxide-semiconductor Q and a Current Control and temperature compensation unit as shown in Figure 2.Wherein the source electrode of metal-oxide-semiconductor Q is electrically connected with the positive input terminal Vin of power supply, and drain electrode is electrically connected with LED light fixture link.And Current Control and temperature compensation unit are connected in parallel between the source electrode and drain electrode of metal-oxide-semiconductor Q, its control end is connected with the grid of metal-oxide-semiconductor Q simultaneously, be used for controlling metal-oxide-semiconductor Q conducting or shutoff, thereby the purpose that reaches the size of current of adjusting LED light fixture link guarantees that LED light fixture link is operated in constant current state by detecting size of current.Be protection metal-oxide-semiconductor Q, can also a parasitic diode D in parallel between the source electrode of metal-oxide-semiconductor Q and drain electrode.
Further, be connected by a protective tube F1 between the positive input terminal Vin+ of power supply and the constant current control chip U1, if short trouble appears in control circuit in the rear end, the protective tube F1 loop of can cutting off the electricity supply reliably, thus thereby preventing that fault from further enlarging causes the accident.
Further, be connected by an anti-reverse diode D8 between the negative input end Vin-of described light fixture link and power supply, the negative electrode that is specially anti-reverse diode D8 is connected with the negative input end Vin-of power supply, in the situation of power positive cathode reversal connection, electric power loop is disconnected do not work and can not damage any element.
Further, be coupled to the high frequency clutter in the power supply signal for guaranteeing steady fluctuation of input supply voltage and filtering, can be at positive input terminal Vin+ and the negative input end Vin-electrochemical capacitor C1 in parallel and/or the high frequency capacitance C2 of power supply.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (6)
1. a LED lighting circuit comprises a LED light fixture link, it is characterized in that, also comprises:
One monitors and adjusts the constant current control chip of the size of current of described LED light fixture link in real time, its be connected between the positive and negative input of power supply after described LED light fixture link is connected.
2. LED lighting circuit as claimed in claim 1 is characterized in that, described constant current control chip comprises:
Metal-oxide-semiconductor, its source electrode is electrically connected with the positive input terminal of power supply, and its drain electrode is electrically connected with described LED light fixture link;
Control the Current Control and the temperature compensation unit of described metal-oxide-semiconductor conducting or shutoff by detecting size of current, it is connected in parallel between the source electrode and drain electrode of described metal-oxide-semiconductor, and its control end is connected with the grid of described metal-oxide-semiconductor simultaneously.
3. LED lighting circuit as claimed in claim 2 is characterized in that, is parallel with parasitic diode between the source electrode of described metal-oxide-semiconductor and the drain electrode.
4. LED lighting circuit as claimed in claim 1 is characterized in that, is connected by a protective tube between the positive input terminal of described constant current control chip and power supply.
5. LED lighting circuit as claimed in claim 1 is characterized in that, is connected by an anti-reverse diode between the negative input end of described LED light fixture link and power supply, and the negative electrode of described anti-reverse diode is connected with the negative input end of power supply.
6. LED lighting circuit as claimed in claim 1 is characterized in that, is parallel with an electrochemical capacitor and/or a high frequency capacitance between the positive and negative input of power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201522330U CN201657424U (en) | 2010-04-01 | 2010-04-01 | LED lighting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201522330U CN201657424U (en) | 2010-04-01 | 2010-04-01 | LED lighting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201657424U true CN201657424U (en) | 2010-11-24 |
Family
ID=43122651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201522330U Expired - Fee Related CN201657424U (en) | 2010-04-01 | 2010-04-01 | LED lighting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201657424U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103917004A (en) * | 2012-12-31 | 2014-07-09 | 杭州展顺科技有限公司 | Three-terminal LED and drive circuit thereof |
-
2010
- 2010-04-01 CN CN2010201522330U patent/CN201657424U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103917004A (en) * | 2012-12-31 | 2014-07-09 | 杭州展顺科技有限公司 | Three-terminal LED and drive circuit thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102404904B (en) | Control device of solar street lamp | |
| CN202005046U (en) | LED (light-emitting diode) lamp and power supply driving circuit of LED lamp | |
| CN202310206U (en) | Control circuit of ultra-low-power single wire power supply touch switch | |
| CN101909376A (en) | High-power LED drive circuit | |
| CN206442561U (en) | A kind of emergent lamp control circuit | |
| CN202551459U (en) | LED (Light Emitting Diode) driving power supply module for silicon controlled regulating circuit | |
| CN102083262A (en) | Negative electrode-driven LED constant current source | |
| CN204901621U (en) | Solar energy, complementary intelligent LED aviation obstruction beacon of commercial power | |
| CN201657424U (en) | LED lighting circuit | |
| CN103517524A (en) | Led emergency controller | |
| CN203734880U (en) | High voltage integration AC LED multistage linear drive device | |
| CN202713751U (en) | LED energy saving lamp integrated module | |
| CN202077238U (en) | LED drive circuit and LED lamp | |
| CN201298940Y (en) | LED light fixture driving power supply | |
| CN203661373U (en) | Solar and mains supply-compatible warning lamp | |
| CN203632931U (en) | Protection circuit for driving LED light source COB series combination with switching power supply | |
| CN202769388U (en) | Led lamp tube | |
| CN204836684U (en) | Can use solar street lamp electrical source controller of portable mobile device control | |
| CN203467043U (en) | Led emergency controller | |
| CN203261510U (en) | LED intelligent power-supply driving | |
| CN204062810U (en) | Solar lawn illuminator | |
| CN202773124U (en) | LED street lamp drive circuit | |
| CN203057627U (en) | An energy-saving illuminating system preventing power off | |
| CN203814028U (en) | Fluorescent lamp electronic ballast controlled by power line carrier waves | |
| CN203162822U (en) | Solar LED (light-emitting diode) lamp for internet of things |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHENZHEN OCEAN'S KING LIGHTING ENGINEERING Co.,Ltd. Assignor: OCEAN'S KING LIGHTING SCIENCE & TECHNOLOGY Co.,Ltd.|SHENZHEN OCEAN'S KING LIGHTING ENGINEERING Co.,Ltd. Contract record no.: 2011440020430 Denomination of utility model: LED (light-emitting diode) lighting circuit Granted publication date: 20101124 License type: Exclusive License Record date: 20111124 |
|
| 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: 20101124 Termination date: 20190401 |