CN203708595U - Novel LED light adjustment circuit - Google Patents
Novel LED light adjustment circuit Download PDFInfo
- Publication number
- CN203708595U CN203708595U CN201420056089.9U CN201420056089U CN203708595U CN 203708595 U CN203708595 U CN 203708595U CN 201420056089 U CN201420056089 U CN 201420056089U CN 203708595 U CN203708595 U CN 203708595U
- Authority
- CN
- China
- Prior art keywords
- protection module
- led light
- optical coupler
- power supply
- light adjusting
- 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
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Classifications
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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 a novel LED light adjustment circuit. Through design of an optical coupler and a power supply constant current chip of a control module, light adjustment of an LED power supply is achieved; through a first protection module and a second protection module, the dual protection function is achieved, and therefore potential safety hazards are reduced greatly. The novel LED light adjustment circuit comprises a first protection module, a second protection module and a control module. Every two of the first protection module, the second protection module and the control module are connected. The first protection module is composed of a detection resistor. The second protection module is composed of a current-limiting resistor and a voltage-limiting resistor. The control module comprises an optical coupler and a power supply constant current chip. The optical coupler and the power supply constant current chip are connected.
Description
Technical field
The utility model relates to control circuit technical field, relates in particular to a kind of New LED light adjusting circuit.
Background technology
LED(Light Emitting Diode), light-emitting diode, it is a kind of solid-state semiconductor device that can be visible ray by electric energy conversion, it can directly be converted into light electricity, because the energy saving of LED is far away higher than existing electricity-saving lamp, simultaneously, the technical problem that also has the LED power work heating relevant to LED that enjoys those skilled in the art to study, along with the work heating of LED power supply, the temperature rise of each electronic devices and components, can cause the output current of constant-current source to increase, thereby, the optical attenuation that affects LED increases, therefore, LED dimming power source is arisen spontaneously.
Current LED dimming power source is all to regulate duty recently to regulate power supply light modulation substantially.
But such duty cycle adjustment technology, due to the heating of self electronic devices and components, thereby causes the excessive of output current recently to regulate with duty, therefore, makes the protection of LED power supply abundant not, causes potential safety hazard further to increase.
Utility model content
The utility model embodiment discloses a kind of New LED light adjusting circuit; the design of optical coupler and power supply constant current chip by control module; not only realize the light modulation of LED power supply; simultaneously; also realize the function of duplicate protection by the first protection module and the second protection module, thereby reduce greatly the generation of potential safety hazard.
A kind of New LED light adjusting circuit providing in the utility model embodiment, comprising:
The first protection module, the second protection module and control module;
Described the first protection module, described the second protection module is connected between two with described control module;
Wherein, described the first protection module forms by detecting resistance;
Described the second protection module is by current-limiting resistance, and pressure limiting circuit composition;
Described control module comprises optical coupler and power supply constant current chip, and described optical coupler is connected with described power supply constant current chip.
Preferably
Described detection resistance is connected with described optical coupler.
Preferably
Described pressure limiting circuit is voltage stabilizing didoe;
Described voltage stabilizing didoe is connected with described optical coupler;
Described voltage stabilizing didoe has two.
Preferably
Described current-limiting resistance is connected with described optical coupler.
Preferably
Described optical coupler detects the rising of resistance both end voltage described in the time that the current value of the described detection resistance of flowing through exceedes preset current value, sends a signal to described power supply constant current chip and regulates current value.
Preferably
Described preset current value scope is 700mA ± 3%.
Preferably
Described optical coupler, also in the time that preset situation occurs in power supply output, sends a signal to described power supply constant current chip powered-down output.
Preferably
Described preset situation is LED short circuit.
Preferably
Described preset situation is that described pressure limiting circuit both end voltage is greater than 300V.
As can be seen from the above technical solutions, the utility model embodiment has the following advantages:
The utility model embodiment provides a kind of New LED light adjusting circuit to comprise: the first protection module; the second protection module and control module; the first protection module; the second protection module is connected between two with control module, and wherein, the first protection module forms by detecting resistance; the second protection module is by current-limiting resistance; and pressure limiting circuit composition, control module comprises optical coupler and power supply constant current chip, optical coupler is connected with power supply constant current chip.In the present embodiment, not only the optical coupler by control module and power supply constant current chip have just been realized the light modulation of LED power supply, and the double protection functions of the first protection module and the second protection module, thereby reduce greatly the generation of potential safety hazard.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation that Fig. 1 is a kind of New LED light adjusting circuit of providing in the utility model embodiment;
The element connecting circuit schematic diagram that Fig. 2 is a kind of New LED light adjusting circuit of providing in the utility model embodiment;
Illustrate: 11, the first protection module; 12, the second protection module; 13, control module; 111, detect resistance; 121, current-limiting resistance; 122, pressure limiting circuit; 131, optical coupler; 132, power supply constant current chip; 1221, voltage stabilizing didoe.
Embodiment
The utility model embodiment discloses a kind of New LED light adjusting circuit; the design of optical coupler and power supply constant current chip by control module; not only realize the light modulation of LED power supply; simultaneously; also realize the function of duplicate protection by the first protection module and the second protection module, thereby reduce greatly the generation of potential safety hazard.
Refer to Fig. 1 and Fig. 2, an embodiment of a kind of New LED light adjusting circuit providing in the utility model embodiment comprises:
The first protection module 11, the second protection modules 12 and control module 13;
The first protection module 11, the second protection modules 12 are connected between two with control module 13;
Wherein, the first protection module 11 forms by detecting resistance 111;
The second protection module 12 is by current-limiting resistance 121, and pressure limiting circuit 122 forms;
Control module 13 comprises optical coupler 131 and power supply constant current chip 132, and optical coupler 131 is connected with power supply constant current chip 132.
Detect resistance 111 and be connected with optical coupler 131, pressure limiting circuit 122 is voltage stabilizing didoe 1221, and voltage stabilizing didoe 1221 is connected with optical coupler 131, and voltage stabilizing didoe 1221 has two, and current-limiting resistance 121 is connected with optical coupler 131.
Should be noted that, aforesaid optical coupler 131, can be to raise for detect resistance 111 both end voltage in the time that the current value of the detection resistance 111 of flowing through exceedes preset current value, send a signal to power supply constant current chip 132 and regulate current value, the scope that is understandable that preset current value is 700mA ± 3%;
And/or
For in the time there is preset situation in power supply output, send a signal to the 132 powered-down outputs of power supply constant current chip, it should be noted that, aforesaid preset situation can be LED short circuit, for example, when LED lamp stops shinny, optical coupler 131 sends a signal to the 132 powered-down outputs of power supply constant current chip, can also be that LED power supply pressure limiting circuit 122 both end voltage are greater than 300V, and optical coupler 131 sends a signal to the 132 powered-down outputs of power supply constant current chip.
The utility model embodiment provides a kind of New LED light adjusting circuit to comprise: the first protection module 11; the second protection module 12 and control module 13; the first protection module 11; the second protection module 12 is connected between two with control module 13; wherein; the first protection module 11 forms by detecting resistance 111; the second protection module 12 is by current-limiting resistance 121; and pressure limiting circuit 122 forms; control module 13 comprises optical coupler 131 and power supply constant current chip 132, and optical coupler 131 is connected with power supply constant current chip 132.Not only the optical coupler 131 by control module 13 and power supply constant current chip 132 have just been realized the light modulation of LED power supply, and the double protection functions of the first protection module 11 and the second protection module 12, thereby reduce greatly the generation of potential safety hazard.
Above a kind of New LED light adjusting circuit provided by the utility model is described in detail, for one of ordinary skill in the art, according to the thought of the utility model embodiment, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (9)
1. a New LED light adjusting circuit, is characterized in that, comprising:
The first protection module, the second protection module and control module;
Described the first protection module, described the second protection module is connected between two with described control module;
Wherein, described the first protection module forms by detecting resistance;
Described the second protection module is by current-limiting resistance, and pressure limiting circuit composition;
Described control module comprises optical coupler and power supply constant current chip, and described optical coupler is connected with described power supply constant current chip.
2. New LED light adjusting circuit according to claim 1, is characterized in that,
Described detection resistance is connected with described optical coupler.
3. New LED light adjusting circuit according to claim 1, is characterized in that,
Described pressure limiting circuit is voltage stabilizing didoe;
Described voltage stabilizing didoe is connected with described optical coupler;
Described voltage stabilizing didoe has two.
4. New LED light adjusting circuit according to claim 3, is characterized in that,
Described current-limiting resistance is connected with described optical coupler.
5. New LED light adjusting circuit according to claim 1, is characterized in that,
Described optical coupler detects the rising of resistance both end voltage described in the time that the current value of the described detection resistance of flowing through exceedes preset current value, sends a signal to described power supply constant current chip and regulates current value.
6. New LED light adjusting circuit according to claim 5, is characterized in that,
Described preset current value scope is 700mA ± 3%.
7. New LED light adjusting circuit according to claim 1, is characterized in that,
Described optical coupler, also in the time that preset situation occurs in power supply output, sends a signal to described power supply constant current chip powered-down output.
8. New LED light adjusting circuit according to claim 6, is characterized in that,
Described preset situation is LED short circuit.
9. New LED light adjusting circuit according to claim 6, is characterized in that,
Described preset situation is that described pressure limiting circuit both end voltage is greater than 300V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056089.9U CN203708595U (en) | 2014-01-28 | 2014-01-28 | Novel LED light adjustment circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056089.9U CN203708595U (en) | 2014-01-28 | 2014-01-28 | Novel LED light adjustment circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203708595U true CN203708595U (en) | 2014-07-09 |
Family
ID=51058970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420056089.9U Expired - Fee Related CN203708595U (en) | 2014-01-28 | 2014-01-28 | Novel LED light adjustment circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203708595U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109600878A (en) * | 2017-09-30 | 2019-04-09 | 周凯迪 | LED driver |
-
2014
- 2014-01-28 CN CN201420056089.9U patent/CN203708595U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109600878A (en) * | 2017-09-30 | 2019-04-09 | 周凯迪 | LED driver |
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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: 20140709 Termination date: 20220128 |