CN204206556U - The LED drive device of adjustable color - Google Patents
The LED drive device of adjustable color Download PDFInfo
- Publication number
- CN204206556U CN204206556U CN201420638775.7U CN201420638775U CN204206556U CN 204206556 U CN204206556 U CN 204206556U CN 201420638775 U CN201420638775 U CN 201420638775U CN 204206556 U CN204206556 U CN 204206556U
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- CN
- China
- Prior art keywords
- control circuit
- output
- led drive
- colour temperature
- current control
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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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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a kind of LED drive device of adjustable color, comprise LED drive module and colour temperature regulable control module, LED drive module comprises EMI filter circuit, rectifier bridge, single-stage PFC control circuit, transformer and two groups of step-down constant-current control circuits, and step-down constant-current control circuit is electrically connected with colour temperature regulable control module; Colour temperature regulable control module comprises Push switch, optical coupling driving triode and MCU signal transacting and exports pwm control circuit; Short when pressing switch, realize switching function, when length presses switch, the output voltage of one group of step-down constant-current control circuit linearly declines by 100% to 0%, the output voltage of another group step-down constant-current control circuit linearly raises by 0% to 100%, power constant is constant, realizes the colour temperature collocation of the load of output two kinds of colour temperatures, thus realizes any adjustment of colour temperature; The utility model structure is simple, and easy and simple to handle, cost is low, is applicable to applying.
Description
Technical field
The utility model relates to a kind of LED drive circuit, particularly relates to a kind of LED drive circuit that can regulate colour temperature.
Background technology
LED illumination, as a kind of novel illuminations, has the advantages such as specular removal, long-life and environmental protection, is therefore also more and more widely used in various lighting field.The dimming mode of LED is divided into direct current light modulation and PWM light modulation two kinds.Because PWM light modulation has photochromic constant, the advantage such as during low-light level stability is better, and widely adopted by those skilled in the art.
For some special light sources environment, not only need to regulate the brightness of LED lamp, also need to regulate the colour temperature of LED lamp.In prior art, usually adopt and the LED of different color light is packaged in a single encapsulating structure, as an independently LED lamp, obtain different colour temperatures by the combination of the LED of different color light, realize the adjustment to LED lamp colour temperature.
Utility model content
Technical problem to be solved in the utility model is to provide the LED drive device of a kind of structure adjustable color simple, easy and simple to handle.
For solving the problems of the technologies described above, the technical solution of the utility model is: the LED drive device of adjustable color, comprise LED drive module and colour temperature regulable control module, described LED drive module comprises the EMI filter circuit be connected with input power, the output of described EMI filter circuit is connected with rectifier bridge, an output of described rectifier bridge is connected with single-stage PFC control circuit, another output of described rectifier bridge and the output of described single-stage PFC control circuit are connected to two inputs of transformer, the output of described transformer is also connected to two groups of step-down constant-current control circuits, described step-down constant-current control circuit is electrically connected with described colour temperature regulable control module, each described step-down constant-current control circuit is equipped with a voltage output end,
Described colour temperature regulable control module comprises Push switch, the output of described Push switch is connected with optical coupling and drives triode, described optical coupling drives the output of triode be connected with MCU signal transacting and export pwm control circuit, and two outputs of described MCU signal transacting and output pwm control circuit are electrically connected with step-down constant-current control circuit described in two groups respectively.
As the preferred technical scheme of one, between described single-stage PFC control circuit and described transformer, be connected with transistor Q.
As the preferred technical scheme of one, described transistor is field effect transistor, and the grid of described field effect transistor is connected with described single-stage PFC control circuit, and the drain electrode of described transistor is connected with described transformer.
As the preferred technical scheme of one, between described transformer and described step-down constant-current control circuit, be connected with diode D and polar capacitor C.
As the preferred technical scheme of one, described Push switch adopts touch-switch or doorbell switch.
Owing to have employed technique scheme, the LED drive device of adjustable color, comprise LED drive module and colour temperature regulable control module, described LED drive module comprises the EMI filter circuit be connected with input power, the output of described EMI filter circuit is connected with rectifier bridge, an output of described rectifier bridge is connected with single-stage PFC control circuit, another output of described rectifier bridge and the output of described single-stage PFC control circuit are connected to two inputs of transformer, the output of described transformer is also connected to two groups of step-down constant-current control circuits, described step-down constant-current control circuit is electrically connected with described colour temperature regulable control module, each described step-down constant-current control circuit is equipped with a voltage output end, described colour temperature regulable control module comprises Push switch, the output of described Push switch is connected with optical coupling and drives triode, described optical coupling drives the output of triode be connected with MCU signal transacting and export pwm control circuit, and two outputs of described MCU signal transacting and output pwm control circuit are electrically connected with step-down constant-current control circuit described in two groups respectively, one termination L/N line of Push switch, another termination control holds, short when pressing switch, realize switching function, when length presses switch, the output voltage of one group of step-down constant-current control circuit linearly declines by 100% to 0%, the output voltage of another group step-down constant-current control circuit linearly raises by 0% to 100%, power constant is constant, realizes the colour temperature collocation of the load of output two kinds of colour temperatures, thus realizes any adjustment of colour temperature, the utility model structure is simple, and easy and simple to handle, cost is low, is applicable to applying.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the utility model embodiment;
Fig. 2 is the EMI filter circuit figure of the utility model embodiment;
Fig. 3 is the single-stage PFC control circuit figure of the utility model embodiment;
Fig. 4 is the step-down constant-current control circuit figure of the utility model embodiment;
Fig. 5 is the MCU signal transacting of the utility model embodiment and exports pwm control circuit.
Embodiment
Below in conjunction with drawings and Examples, set forth the utility model further.In the following detailed description, the mode only by illustrating describes some one exemplary embodiment of the present utility model.Undoubtedly, those of ordinary skill in the art can recognize, when not departing from spirit and scope of the present utility model, can revise by various different mode to described embodiment.Therefore, accompanying drawing is illustrative with being described in essence, instead of for limiting the protection range of claim.
As shown in Figure 1, the LED drive device of adjustable color, comprise LED drive module and colour temperature regulable control module, described LED drive module comprises the EMI filter circuit be connected with input power, described EMI filter circuit figure as shown in Figure 2, the output of described EMI filter circuit is connected with rectifier bridge, an output of described rectifier bridge is connected with single-stage PFC control circuit, single-stage PFC control circuit figure as shown in Figure 3, another output of described rectifier bridge and the output of described single-stage PFC control circuit are connected to two inputs of transformer, transistor Q is connected with between described single-stage PFC control circuit and described transformer, described transistor Q is field effect transistor, the grid of described field effect transistor is connected with described single-stage PFC control circuit, the drain electrode of described transistor is connected with described transformer, the output of described transformer is also connected to two groups of step-down constant-current control circuits, and step-down constant-current control circuit figure as shown in Figure 4, is connected with diode D and polar capacitor C between described transformer and described step-down constant-current control circuit, described step-down constant-current control circuit is electrically connected with described colour temperature regulable control module, and each described step-down constant-current control circuit is equipped with a voltage output end,
Described colour temperature regulable control module comprises Push switch, described Push switch adopts common touch-switch or doorbell switch, the output of described Push switch is connected with optical coupling and drives triode, described optical coupling drives the output of triode be connected with MCU signal transacting and export pwm control circuit, as shown in Figure 5, two outputs of described MCU signal transacting and output pwm control circuit are electrically connected with step-down constant-current control circuit described in two groups respectively for MCU signal transacting and output pwm control circuit figure.
One termination L/N line of Push switch, another termination control holds; Short when pressing switch, realize switching function, when length presses switch, the output voltage of one group of step-down constant-current control circuit linearly declines by 100% to 0%, the output voltage of another group step-down constant-current control circuit linearly raises by 0% to 100%, power constant is constant, realizes the colour temperature collocation of the load of output two kinds of colour temperatures, thus realizes any adjustment of colour temperature; The utility model structure is simple, and easy and simple to handle, cost is low, is applicable to applying.
More than show and describe general principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. the LED drive device of adjustable color, it is characterized in that: comprise LED drive module and colour temperature regulable control module, described LED drive module comprises the EMI filter circuit be connected with input power, the output of described EMI filter circuit is connected with rectifier bridge, an output of described rectifier bridge is connected with single-stage PFC control circuit, another output of described rectifier bridge and the output of described single-stage PFC control circuit are connected to two inputs of transformer, the output of described transformer is also connected to two groups of step-down constant-current control circuits, described step-down constant-current control circuit is electrically connected with described colour temperature regulable control module, each described step-down constant-current control circuit is equipped with a voltage output end,
Described colour temperature regulable control module comprises Push switch, the output of described Push switch is connected with optical coupling and drives triode, described optical coupling drives the output of triode be connected with MCU signal transacting and export pwm control circuit, and two outputs of described MCU signal transacting and output pwm control circuit are electrically connected with step-down constant-current control circuit described in two groups respectively.
2. the LED drive device of adjustable color as claimed in claim 1, is characterized in that: be connected with transistor Q between described single-stage PFC control circuit and described transformer.
3. the LED drive device of adjustable color as claimed in claim 2, it is characterized in that: described transistor is field effect transistor, the grid of described field effect transistor is connected with described single-stage PFC control circuit, and the drain electrode of described transistor is connected with described transformer.
4. the LED drive device of adjustable color as claimed in claim 1, is characterized in that: be connected with diode D and polar capacitor C between described transformer and described step-down constant-current control circuit.
5. the LED drive device of the adjustable color as described in claim 1,2,3 or 4, is characterized in that: described Push switch adopts touch-switch or doorbell switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420638775.7U CN204206556U (en) | 2014-10-30 | 2014-10-30 | The LED drive device of adjustable color |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420638775.7U CN204206556U (en) | 2014-10-30 | 2014-10-30 | The LED drive device of adjustable color |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204206556U true CN204206556U (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420638775.7U Expired - Fee Related CN204206556U (en) | 2014-10-30 | 2014-10-30 | The LED drive device of adjustable color |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204206556U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108770136A (en) * | 2018-08-17 | 2018-11-06 | 东莞邦达五金有限公司 | A kind of light modulation toning LED isolation constant-current driving power supplies |
-
2014
- 2014-10-30 CN CN201420638775.7U patent/CN204206556U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108770136A (en) * | 2018-08-17 | 2018-11-06 | 东莞邦达五金有限公司 | A kind of light modulation toning LED isolation constant-current driving power supplies |
| CN108770136B (en) * | 2018-08-17 | 2024-01-05 | 东莞邦达五金有限公司 | Dimming and toning LED isolation constant-current driving power supply |
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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 |
Granted publication date: 20150311 Termination date: 20181030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |