CN210670662U - Linear multi-color temperature control circuit - Google Patents
Linear multi-color temperature control circuit Download PDFInfo
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- CN210670662U CN210670662U CN201921432396.1U CN201921432396U CN210670662U CN 210670662 U CN210670662 U CN 210670662U CN 201921432396 U CN201921432396 U CN 201921432396U CN 210670662 U CN210670662 U CN 210670662U
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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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Abstract
The utility model provides a linear multicolor temperature control circuit, a linear voltage stabilizing circuit comprises a triode Q3, a voltage stabilizing tube D1 and a voltage reducing resistor; the alternating current input end of the rectifier bridge is connected with a mains supply, the direct current positive electrode output end is connected to an emitting electrode of a triode Q3 through a voltage reduction resistor, a base electrode of a triode Q3 is connected to the negative electrode of a voltage regulator tube D1, and the positive electrode of the voltage regulator tube D1 is connected with the direct current negative electrode output end of the rectifier bridge; the positive electrode output end of the rectifier bridge is also connected to the input end of the linear IC, and the output end of the linear IC is respectively connected to the positive electrode of each path of LED lamp beads; the drain electrode of the switching tube is connected with the negative electrode of the LED lamp bead, the grid electrode of the switching tube is connected with the control signal output end of the single chip microcomputer, and the source electrode of the switching tube is grounded; the R03 pin of the singlechip is grounded through a potentiometer VR; the single chip microcomputer RO3 pin samples different voltage values by changing the resistance value of the potentiometer VR, and the single chip microcomputer outputs a control signal to control the conduction time of the switch tube, so that the color temperature of the emergent light changes.
Description
Technical Field
The utility model relates to the field of lighting, especially, relate to LED colour temperature control circuit.
Background
In order to realize the adjustment of the light-emitting color temperature of the low LED in the prior art, a switching power supply is mostly used for driving, one or more paths of LEDs are lightened, and the color temperatures of the LEDs are different, so that the aim of adjusting the light-emitting color temperature is fulfilled after the LEDs are mixed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the main technical problem that a linear polychrome temperature control circuit is provided, not only the singlechip drive circuit is linear, and LED drive circuit is also linear, has practiced thrift the cost.
In order to solve the technical problem, the utility model provides a linear polychrome temperature control circuit which characterized in that includes: the LED lamp comprises a rectifier bridge, a linear voltage stabilizing module, a single chip microcomputer, a linear IC and at least two paths of LED lamp beads, wherein the color temperature of each path of LED lamp bead is different; each path of LED lamp bead is respectively connected with a switch tube in series;
the linear voltage stabilizing circuit comprises a triode Q3, a voltage regulator tube D1 and a voltage reduction resistor;
the alternating current input end of the rectifier bridge is connected with a mains supply, the direct current positive electrode output end is connected to an emitting electrode of a triode Q3 through a voltage reduction resistor, a base electrode of a triode Q3 is connected to the negative electrode of a voltage regulator tube D1, and the positive electrode of the voltage regulator tube D1 is connected with the direct current negative electrode output end of the rectifier bridge;
the output end of the positive pole of the rectifier bridge is also connected to the input end of the linear IC, and the output end of the linear IC is respectively connected to the positive pole of each path of LED lamp bead;
the drain electrode of the switch tube is connected with the negative electrode of the LED lamp bead, the grid electrode of the switch tube is connected with the control signal output end of the single chip microcomputer, and the source electrode of the switch tube is grounded; the R03 pin of the single chip microcomputer is grounded through a potentiometer VR;
let singlechip RO3 foot sample different voltage value through changing potentiometre VR's resistance, the on-time of ADC function output control signal control switch tube through the singlechip makes two way LED lamp pearl mix the back light-emitting colour temperature and change at least.
Compared with the prior art, the technical scheme of the utility model possess following beneficial effect:
the utility model provides a pair of linear polychrome temperature control circuit lets singlechip RO3 foot sampling different voltage value through the resistance that changes potentiometre VR, through the on-time of the ADC function output control signal control switch pipe of singlechip, makes two way LED lamp pearls mix the back light-emitting colour temperature and change at least. Therefore, the duty ratio is adjusted by the single chip microcomputer to realize electrodeless color temperature control, the single chip microcomputer is powered by the linear voltage stabilizing circuit, and the LED is driven by the linear IC. The circuit has fewer components, low cost and low failure rate, and realizes electrodeless color temperature control.
Drawings
Fig. 1 is a circuit diagram of the preferred embodiment of the present invention.
Detailed Description
The following is a further description of the embodiments of the present invention, but the embodiments of the present invention are not limited thereto.
Referring to fig. 1, a linear multi-color temperature control circuit is characterized by comprising: the LED lamp comprises a rectifier bridge, a linear voltage stabilizing module, a single chip microcomputer, a linear IC and two paths of LED lamp beads, wherein the color temperature of each path of LED lamp bead is different; each path of LED lamp bead is respectively connected with a switching tube Q1 and a switching tube Q2 in series;
the linear voltage stabilizing circuit comprises a triode Q3, a voltage regulator tube D1 and a voltage reduction resistor;
the alternating current input end of the rectifier bridge is connected with a mains supply, the direct current positive electrode output end is connected to an emitting electrode of a triode Q3 through a voltage reduction resistor, a base electrode of a triode Q3 is connected to the negative electrode of a voltage regulator tube D1, and the positive electrode of the voltage regulator tube D1 is connected with the direct current negative electrode output end of the rectifier bridge;
the output end of the positive pole of the rectifier bridge is also connected to the input end of the linear IC, and the output end of the linear IC is respectively connected to the positive pole of each path of LED lamp bead;
the drains of the switching tubes Q1 and Q2 are connected with the negative electrode of the LED lamp bead, the grid electrode of the switching tube is connected with the control signal output end of the single chip microcomputer, and the source electrodes of the switching tubes Q1 and Q2 are grounded; the R03 pin of the single chip microcomputer is grounded through a potentiometer VR;
let singlechip RO3 foot sample different voltage value through changing potentiometre VR's resistance, the ADC function output control signal through the singlechip controls switch tube Q1, Q2's on-time, makes two at least ways LED lamp pearl mix the back light-emitting colour temperature and change. Therefore, the duty ratio is adjusted by the single chip microcomputer to realize electrodeless color temperature control, the single chip microcomputer is powered by the linear voltage stabilizing circuit, and the LED is driven by the linear IC. The circuit has fewer components, low cost and low failure rate, and realizes electrodeless color temperature control.
The above description is only an exemplary embodiment of the present invention, and the scope of the present invention should not be limited accordingly. The equivalent changes and modifications made according to the patent scope and the content of the specification of the present invention should still fall within the scope covered by the present invention.
Claims (1)
1. A linear multi-color temperature control circuit, comprising: the LED lamp comprises a rectifier bridge, a linear voltage stabilizing module, a single chip microcomputer, a linear IC and at least two paths of LED lamp beads, wherein the color temperature of each path of LED lamp bead is different; each path of LED lamp bead is respectively connected with a switch tube in series;
the linear voltage stabilizing circuit comprises a triode Q3, a voltage regulator tube D1 and a voltage reduction resistor;
the alternating current input end of the rectifier bridge is connected with a mains supply, the direct current positive electrode output end is connected to an emitting electrode of a triode Q3 through a voltage reduction resistor, a base electrode of a triode Q3 is connected to the negative electrode of a voltage regulator tube D1, and the positive electrode of the voltage regulator tube D1 is connected with the direct current negative electrode output end of the rectifier bridge;
the output end of the positive pole of the rectifier bridge is also connected to the input end of the linear IC, and the output end of the linear IC is respectively connected to the positive pole of each path of LED lamp bead;
the drain electrode of the switch tube is connected with the negative electrode of the LED lamp bead, the grid electrode of the switch tube is connected with the control signal output end of the single chip microcomputer, and the source electrode of the switch tube is grounded; the R03 pin of the single chip microcomputer is grounded through a potentiometer VR;
let singlechip RO3 foot sample different voltage value through changing potentiometre VR's resistance, the on-time of ADC function output control signal control switch tube through the singlechip makes two way LED lamp pearl mix the back light-emitting colour temperature and change at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921432396.1U CN210670662U (en) | 2019-08-30 | 2019-08-30 | Linear multi-color temperature control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921432396.1U CN210670662U (en) | 2019-08-30 | 2019-08-30 | Linear multi-color temperature control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210670662U true CN210670662U (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921432396.1U Active CN210670662U (en) | 2019-08-30 | 2019-08-30 | Linear multi-color temperature control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210670662U (en) |
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2019
- 2019-08-30 CN CN201921432396.1U patent/CN210670662U/en active Active
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