CN202276518U - LED lighting and light-controlling transformation circuit - Google Patents
LED lighting and light-controlling transformation circuit Download PDFInfo
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- CN202276518U CN202276518U CN2011203911018U CN201120391101U CN202276518U CN 202276518 U CN202276518 U CN 202276518U CN 2011203911018 U CN2011203911018 U CN 2011203911018U CN 201120391101 U CN201120391101 U CN 201120391101U CN 202276518 U CN202276518 U CN 202276518U
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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
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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Abstract
The utility model discloses an LED lighting and light-controlling transformation circuit, belonging to an LED intensity circuit, wherein a singlechip is arranged in the circuit; at least two channels of I/O interfaces are arranged on the singlechip; the transformation circuit comprises three resistances, R1, R2 and R3; the three resistances are successively connected to the power supply; one channel of the two channels of I/O interfaces on the singlechip is connected to a circuit output port OUT through an audion Q1 passing between the resistance R1 and the resistance R2, and the other channel of the two channels of the two I/O interfaces is connected to the resistance R2 and the resistance R3 through an audion Q2; and one electrode of the audion Q1 and the audion Q1 is grounding. The LED lighting and light-controlling transformation circuit provided by the utility model has simple structure and is suitable for using in the LED street lamps with various standards, and has wide application range.
Description
Technical field
The utility model relates to a kind of LED intednsity circuit, a kind of LED illumination control light transforming circuit of saying so more specifically.
Background technology
In the LED field of intelligent control, especially outdoor LED street lamp is from the consideration of energy-conserving and environment-protective; Need the brightness of change LED street lamp regularly, therefore an input control end is arranged on the power supply of LED street lamp, input control end input voltage changes for caning be controlled in 0 to 12V; Because influence the output current of power supply, that is to say, with the input control end of LED road lamp power supply control voltage from 0 to 12V; The LED street lamp will be from black to high-high brightness, and this function is owing to need the voltage of control LED road lamp power supply input, use at present commonplace be to adopt the single-chip processor i/o interface to insert the DA chip; To import power supply simultaneously and also insert the DA chip; Convert the supply voltage of importing into required LED road lamp power supply voltage through Single-chip Controlling DA chip, but the price of DA chip is comparatively expensive, has caused the production cost of LED street lamp too high; And most of street lamps only need provide among the 2-3 brightness to switch enough, adopt expensive DA chip also to seem and too waste production cost.
The utility model content
The purpose of the utility model is to solve above-mentioned deficiency, provides a kind of cost lower, and can realize a kind of LED illumination control light transforming circuit of LED street lamp lamplight brightness control.
For solving above-mentioned technical problem, the utility model adopts following technical scheme:
A kind of LED illumination control light transforming circuit that the utility model provided is provided with single-chip microcomputer in the circuit, single-chip microcomputer is provided with two-way I/O interface at least, comprises R1, R2, three resistance of R3 in the described transforming circuit, and three resistance insert the input power supply successively; The triode Q1 of wherein leading up to of two-way I/O interface passes through place in circuit delivery outlet OUT between resistance R 1 and the R2 on the single-chip microcomputer, and resistance R 2 and resistance R 3 are inserted through triode Q2 in another road; The wherein one-level ground connection of described triode Q1 and Q2.
Further technical scheme is: the resistance ratio of described resistance R 1, R2 and R3 is: 5: 7: 18.
Technical scheme further is: the base stage of described triode Q1 connects the single-chip processor i/o interface, and collector electrode is through place in circuit delivery outlet OUT between resistance R 1 and the R2, grounded emitter.
Further technical scheme is again: the base stage of described triode Q2 connects the single-chip processor i/o interface, and collector electrode inserts resistance R 2 and resistance R 3, grounded emitter.
Compared with prior art, the beneficial effect of the utility model is: single-chip microcomputer is exported by circuit delivery outlet OUT with regard to convertible three kinds of different voltages through the break-make of I/O interface control triode Q1 and Q2; Thereby control is through the electric current of LED street lamp; The brightness of LED street lamp can be changed with the variation of three kinds of different voltages of input, reach purpose, substituted DA chip used in the prior art through Single-chip Controlling LED street lamp brightness; Practiced thrift production cost; And a kind of LED illumination control light transforming circuit that the utility model provided is simple in structure, uses in the LED street lamp that is applicable at all size, and range of application is wide.
Description of drawings
Fig. 1 is the utility model circuit structure diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further to set forth.
A kind of LED illumination control light transforming circuit as shown in Figure 1, that the utility model provided is provided with single-chip microcomputer in the circuit; Single-chip microcomputer is provided with two-way I/O interface at least; Comprise R1, R2, three resistance of R3 in the described transforming circuit, according to the demand of different LED street lamp to voltage of transformation, the resistance of the resistance of selecting to adapt with it is as the R1 in the circuit, R2, R3; Preferred resistance ratio is 5: 7: 18; This execution mode is as example, and the resistance of resistance R 1, R2, R3 is set to 5 Ω, 7 Ω and 18 Ω respectively, and three resistance are inserted the input power supply successively.
The triode Q1 of wherein leading up to of two-way I/O interface passes through place in circuit delivery outlet OUT between resistance R 1 and the R2 on the single-chip microcomputer, and resistance R 2 and resistance R 3 are inserted through triode Q2 in another road; The wherein one-level ground connection of described triode Q1 and Q2; The preferential connected mode of selecting of aforementioned each electrode of triode Q1 is that base stage is connected the single-chip processor i/o interface; Place in circuit delivery outlet OUT between collector electrode process resistance R 1 and the R2, grounded emitter, and the preferential connected mode of selecting of each electrode of Q2 is a base stage connection single-chip processor i/o interface; Collector electrode inserts resistance R 2 and resistance R 3, grounded emitter.
A kind of LED illumination control light transforming circuit that the utility model provided is in the work engineering; If the input power source voltage is 12V; When single-chip microcomputer was controlled triode Q1 base stage and collector electrode conducting through the I/O interface, circuit delivery outlet OUT connected with ground so, and this moment, output voltage was 0V; When the base stage of Single-chip Controlling triode Q1 and collector electrode break off, and the base stage of control triode Q2 is during with the collector electrode conducting, and the input voltage of 12V carries out dividing potential drop on resistance R 1 and R2; When the base stage of Single-chip Controlling triode Q1 and Q2 and collector electrode all break off; Import power supply this moment and directly get into circuit delivery outlet OUT through resistance R 1, R2, R3; Therefore it is following that 12V input voltage dividing potential drop on resistance R 1 R2 and R3, the LED street lamp of circuit delivery outlet OUT finally obtain the calculating of voltage:
1) I/O1 is high, and I/O2 is low, the Q1 conducting, Q2 by, OUT directly with the ground conducting
OUT＝0V
2) I/O1 is low, and I/O2 is low, Q1, Q2 all by
OUT＝12*(R2+R3)/(R1+R2+R3)＝12*(7+18)/(5+7+18)＝10V
3) I/O1 is low, and I/O2 is high, and Q1 is by, Q2 conducting
OUT＝12*R2/(R1+R2)＝12*7/(5+7)＝7V
Through the break-make of triode Q1 and Q2 base stage and collector electrode, can make the LED street lamp obtain three kinds of different voltages with different thus, achieve three kinds of different brightness and switch.
Claims (4)
1. a LED illumination control light transforming circuit is provided with single-chip microcomputer in the circuit, and single-chip microcomputer is provided with two-way I/O interface at least, it is characterized in that: comprise R1, R2, three resistance of R3 in the described transforming circuit, three resistance insert the input power supply successively; The triode Q1 of wherein leading up to of two-way I/O interface passes through place in circuit delivery outlet OUT between resistance R 1 and the R2 on the single-chip microcomputer, and resistance R 2 and resistance R 3 are inserted through triode Q2 in another road; The wherein one-level ground connection of described triode Q1 and Q2.
2. LED according to claim 1 illumination control light transforming circuit is characterized in that: the resistance ratio of described resistance R 1, R2 and R3 is: 5: 7: 18.
3. LED illumination control light transforming circuit according to claim 1, it is characterized in that: the base stage of described triode Q1 connects the single-chip processor i/o interface, and collector electrode is through place in circuit delivery outlet OUT between resistance R 1 and the R2, grounded emitter.
4. according to claim 1 or 3 described LED illumination control light transforming circuits, it is characterized in that: the base stage of described triode Q2 connects the single-chip processor i/o interface, and collector electrode inserts resistance R 2 and resistance R 3, grounded emitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203911018U CN202276518U (en) | 2011-10-14 | 2011-10-14 | LED lighting and light-controlling transformation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203911018U CN202276518U (en) | 2011-10-14 | 2011-10-14 | LED lighting and light-controlling transformation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202276518U true CN202276518U (en) | 2012-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203911018U Expired - Fee Related CN202276518U (en) | 2011-10-14 | 2011-10-14 | LED lighting and light-controlling transformation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202276518U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019136090A1 (en) * | 2018-01-02 | 2019-07-11 | Scout Industries, Inc. | Variable-intensity led module, system and light fixture |
-
2011
- 2011-10-14 CN CN2011203911018U patent/CN202276518U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019136090A1 (en) * | 2018-01-02 | 2019-07-11 | Scout Industries, Inc. | Variable-intensity led module, system and light fixture |
| US11026306B2 (en) | 2018-01-02 | 2021-06-01 | Scout Industries, Inc. | Variable-intensity LED module, system and light fixture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20121014 |