CN103889095B - Environment-friendly type LED lighting delay circuit - Google Patents
Environment-friendly type LED lighting delay circuit Download PDFInfo
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- CN103889095B CN103889095B CN201210560331.1A CN201210560331A CN103889095B CN 103889095 B CN103889095 B CN 103889095B CN 201210560331 A CN201210560331 A CN 201210560331A CN 103889095 B CN103889095 B CN 103889095B
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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 invention discloses a kind of environment-friendly type LED lighting delay circuit, comprise DC power supply, LED group, charge/discharge testing circuit and delay control circuit, wherein, the circuit output end that described DC power supply is in parallel with at least two-way, one circuit output end is electrically connected on described LED group, another circuit output end is electrically connected on described charge/discharge testing circuit, to form stand-by electric energy; Described delay control circuit is electrically connected on described charge/discharge testing circuit, and can control LED group work described in described charge/discharge testing circuit break-make; Like this when DC power supply stops powering to LED group, the stand-by electric energy that described charge/discharge testing circuit is formed can be powered to LED group under the control of delay control circuit, effectively extends the lighting hours of LED group.<!--1-->
Description
Technical field
The present invention relates to technical field of LED illumination, a kind of environment-friendly type LED lighting delay circuit is specifically provided.
Background technology
In prior art, illumination delayed control circuit is adopt battery as stand-by power supply mostly, but the charging circuit of battery not only complex structure, and also the charging interval is long, cycle life is very short, is not well positioned to meet instructions for use.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of environment-friendly type LED lighting delay circuit, this circuit structure is optimized, and effectively can extend the lighting hours of LED group.
The present invention in order to the technical scheme solving its technical problem and adopt is: a kind of environment-friendly type LED lighting delay circuit, comprise DC power supply, LED group, charge/discharge testing circuit and delay control circuit, wherein, the circuit output end that described DC power supply is in parallel with at least two-way, one circuit output end is electrically connected on described LED group, another circuit output end is electrically connected on described charge/discharge testing circuit, to form stand-by electric energy; Described delay control circuit is electrically connected on described charge/discharge testing circuit, and can control LED group work described in described charge/discharge testing circuit break-make.
As a further improvement on the present invention, described LED group comprises first and second LED be connected in series mutually, and wherein, one end of described second LED is electrically connected on described DC power supply through described first LED, the other end ground connection of described second LED.
As a further improvement on the present invention, described charge/discharge testing circuit comprises charging current limiter resistance, first, two detect resistance, low frequency silicon diode, super farad capacitor and first, two-transistor, wherein, one end of described charging current limiter resistance is electrically connected on described DC power supply, the other end that resistance is electrically connected on described charging current limiter resistance is detected by described first in described second one end detecting resistance, and the other end ground connection of described second detection resistance, the anode of described low frequency silicon diode is also electrically connected on the other end of described charging current limiter resistance, the cathodic electricity of described low frequency silicon diode is connected to the positive pole of described super farad capacitor, the minus earth of described super farad capacitor, the emitter of another described the first transistor and the collector electrode of described transistor seconds are electrically connected on the positive pole of described super farad capacitor respectively, the base stage of described the first transistor is electrically connected on one end that described second detects resistance, and the emitter of described transistor seconds is electrically connected on one end of described second LED.
As a further improvement on the present invention, described delay control circuit comprises timing capacitor circuit and mono-stable timing circuit, described timing capacitor circuit includes first and second timing capacitor and first and second Timed current-limiting resistance, and described mono-stable timing circuit includes time-base circuit; Wherein, the positive pole corresponding collector electrode being electrically connected on described the first transistor by first and second Timed current-limiting resistance described respectively of first and second timing capacitor described, the equal ground connection of negative pole of first and second timing capacitor described; 4 pin of described time-base circuit and 8 pin are all electrically connected on the collector electrode of described the first transistor, 3 pin of described time-base circuit are electrically connected on the base stage of described transistor seconds, 2 pin of described time-base circuit be electrically connected on described first timing capacitor positive pole and first time current-limiting resistance between, 6 pin of described time-base circuit and 7 pin be in parallel and be electrically connected on described second timing capacitor positive pole and second time current-limiting resistance between, and 1 pin of described time-base circuit and the equal ground connection of 5 pin.
The invention has the beneficial effects as follows: this circuit comprises DC power supply, LED group, charge/discharge testing circuit and delay control circuit, wherein, the circuit output end that described DC power supply is in parallel with at least two-way, one circuit output end is electrically connected on described LED group, to the direct powered lighting of LED group, another circuit output end is electrically connected on described charge/discharge testing circuit, to form stand-by electric energy; Described delay control circuit is electrically connected on described charge/discharge testing circuit, and control described charge/discharge testing circuit can LED group work described in break-make; Like this when DC power supply stops powering to LED group, the stand-by electric energy that described charge/discharge testing circuit is formed can be powered to LED group under the control of delay control circuit, effectively extends the lighting hours of LED group.
Accompanying drawing explanation
Fig. 1 is circuit theory schematic diagram of the present invention.
Embodiment
Referring to figure to a preferred embodiment of the present invention will be described in detail.
A kind of environment-friendly type LED lighting delay circuit of the present invention, comprise DC power supply DC, LED group, charge/discharge testing circuit and delay control circuit, wherein, the circuit output end that described DC power supply is in parallel with at least two-way, one circuit output end is electrically connected on described LED group, direct powered lighting, another circuit output end is electrically connected on described charge/discharge testing circuit, to form stand-by electric energy; Described delay control circuit is electrically connected on described charge/discharge testing circuit, and can control LED group work described in described charge/discharge testing circuit break-make.
In the present embodiment, described LED group comprises the first LED LED1, the second LED LED2 that are connected in series mutually, wherein, one end of described second LED LED2 is electrically connected on described DC power supply through described first LED LED1, the other end ground connection of described second LED LED2.
Described charge/discharge testing circuit comprises charging current limiter resistance R6, first detects resistance R1, second detects resistance R2, low frequency silicon diode D1, super farad capacitor C4, the first transistor Q1 and transistor seconds Q2, wherein, one end of described charging current limiter resistance R6 is electrically connected on described DC power supply, the other end that resistance R1 is electrically connected on described charging current limiter resistance R6 is detected by described first in described second one end detecting resistance R2, and the other end ground connection of described second detection resistance R2, the anode of described low frequency silicon diode D1 is also electrically connected on the other end of described charging current limiter resistance R6, the cathodic electricity of described low frequency silicon diode D1 is connected to the positive pole of described super farad capacitor C4, the minus earth of described super farad capacitor C4, the emitter of another described the first transistor Q1 and the collector electrode of described transistor seconds Q2 are electrically connected on the positive pole of described super farad capacitor C4 respectively, the base stage of described the first transistor Q1 is electrically connected on one end that described second detects resistance R2, and the emitter of described transistor seconds Q2 is electrically connected on one end of described second LED LED2.
Described delay control circuit comprises timing capacitor circuit and mono-stable timing circuit, described timing capacitor circuit includes the first timing capacitor C1, the second timing capacitor C2, the first Timed current-limiting resistance R3 and the second Timed current-limiting resistance R4, and described mono-stable timing circuit includes time-base circuit U1 (this example adopts 555 serial timers); Wherein, the positive pole corresponding collector electrode being electrically connected on described the first transistor Q1 by first and second Timed current-limiting resistance described respectively of first and second timing capacitor described, the equal ground connection of negative pole of first and second timing capacitor described; 4 pin of described time-base circuit U1 and 8 pin are all electrically connected on the collector electrode of described the first transistor Q1,3 pin of described time-base circuit U1 are electrically connected on the base stage of described transistor seconds Q2 by the 3rd current-limiting resistance R5,2 pin of described time-base circuit U1 be electrically connected on described first timing capacitor C1 positive pole and first time current-limiting resistance R3 between, 6 pin of described time-base circuit U1 and 7 pin be in parallel and be electrically connected on described second timing capacitor C2 positive pole and second time current-limiting resistance R4 between, and 1 pin of described time-base circuit U1 and the equal ground connection of 5 pin.In the present embodiment, described time-base circuit U1's: 1 pin is circuit ground GND, and 2 pin are trigger end, and 3 pin are output, and 4 pin are reset terminal, and 5 pin are control voltage, and 6 pin are thresholding (threshold value), and 7 pin are discharge end, and 8 pin are positive source VCC.
Operation principle of the present invention is: 1, when circuit is in normal power-up, DC power supply DC directly powers to first and second LED, first and second LED is all in normal illumination state, and now, the base stage of the first transistor Q1 is high level, be the first transistor Q1 and be in cut-off state, accordingly, 3 pin of time-base circuit U1 are low level, and time-base circuit U1 does not carry out work, therefore transistor seconds Q2 is just in cut-off state, and super farad capacitor C4 does not discharge; Separately after power on circuitry, by charging current limiter resistance R6 and low frequency silicon diode D1, super farad capacitor C4 is charged, when the cathode voltage of super farad capacitor C4 equals the voltage of low frequency silicon diode D1 negative electrode, super farad capacitor C4 charge cutoff; This is the charged state of described charge/discharge testing circuit.
2, when circuit is in power-off, the base stage of the first transistor Q1 is low level, the first transistor Q1 conducting, corresponding time-base circuit U1 is initially located in operating state, now, first timing capacitor C1 is charged to rapidly the collector voltage of the first transistor Q1 by the first Timed current-limiting resistance R3, second timing capacitor C2 is then slowly charged 2/3 of the collector voltage of the first transistor Q1 through the second Timed current-limiting resistance R4, at the second timing capacitor C2 by the process of charging, time base chip U1 output 3 pin be in high level state, the base stage of corresponding transistor seconds Q2 is also in high level state, therefore transistor seconds Q2 conducting, second LED LED2 just can be lit, this is the discharge condition of described charge/discharge testing circuit.But when the voltage of the second timing capacitor C2 exceedes 2/3 of the collector voltage of the first transistor Q1, time base chip U1 output 3 pin just can be in low level state, the base stage of corresponding transistor seconds Q2 is also in low level state, thus transistor seconds Q2 is cut off, the second LED LED2 just can extinguish.
Claims (2)
1. an environment-friendly type LED lighting delay circuit, comprise DC power supply (DC), LED group and charge/discharge testing circuit, wherein, the circuit output end that described DC power supply is in parallel with at least two-way, one circuit output end is electrically connected on described LED group, another circuit output end is electrically connected on described charge/discharge testing circuit, to form stand-by electric energy; It is characterized in that: described LED group comprises first and second LED (LED1, LED2) be connected in series mutually, one end of described second LED (LED2) is electrically connected on described DC power supply through described first LED (LED1), the other end ground connection of described second LED (LED2);
Described charge/discharge testing circuit comprises charging current limiter resistance (R6), first, two detect resistance (R1, R2), low frequency silicon diode (D1), super farad capacitor (C4) and first, two-transistor (Q1, Q2), wherein, one end of described charging current limiter resistance (R6) is electrically connected on described DC power supply, the other end that resistance (R1) is electrically connected on described charging current limiter resistance (R6) is detected by described first in described second one end detecting resistance (R2), and the other end ground connection of described second detection resistance (R2), the anode of described low frequency silicon diode (D1) is also electrically connected on the other end of described charging current limiter resistance (R6), the cathodic electricity of described low frequency silicon diode (D1) is connected to the positive pole of described super farad capacitor (C4), the minus earth of described super farad capacitor (C4), the emitter of another described the first transistor (Q1) and the collector electrode of described transistor seconds (Q2) are electrically connected on the positive pole of described super farad capacitor (C4) respectively, the base stage of described the first transistor (Q1) is electrically connected on one end that described second detects resistance (R2), and the emitter of described transistor seconds (Q2) is electrically connected on one end of described second LED (LED2),
Another described delay control circuit is electrically connected on described charge/discharge testing circuit, and can control LED group work described in described charge/discharge testing circuit break-make.
2. environment-friendly type LED lighting delay circuit according to claim 1, it is characterized in that: described delay control circuit comprises timing capacitor circuit and mono-stable timing circuit, described timing capacitor circuit includes first and second timing capacitor (C1, C2) and first and second Timed current-limiting resistance (R3, R4), and described mono-stable timing circuit includes time-base circuit (U1), wherein, the positive pole corresponding collector electrode being electrically connected on described the first transistor (Q1) by first and second Timed current-limiting resistance (R3, R4) described respectively of described first and second timing capacitor (C1, C2), the equal ground connection of negative pole of described first and second timing capacitor (C1, C2), 4 pin of described time-base circuit (U1) and 8 pin are all electrically connected on the collector electrode of described the first transistor (Q1), 3 pin of described time-base circuit (U1) are electrically connected on the base stage of described transistor seconds (Q2), 2 pin of described time-base circuit (U1) be electrically connected on described first timing capacitor (C1) positive pole and first time current-limiting resistance (R3) between, 6 pin of described time-base circuit (U1) and 7 pin be in parallel and be electrically connected on described second timing capacitor (C2) positive pole and second time current-limiting resistance (R4) between, and 1 pin of described time-base circuit (U1) and the equal ground connection of 5 pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210560331.1A CN103889095B (en) | 2012-12-21 | 2012-12-21 | Environment-friendly type LED lighting delay circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210560331.1A CN103889095B (en) | 2012-12-21 | 2012-12-21 | Environment-friendly type LED lighting delay circuit |
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| Publication Number | Publication Date |
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| CN103889095A CN103889095A (en) | 2014-06-25 |
| CN103889095B true CN103889095B (en) | 2015-11-04 |
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| CN201210560331.1A Expired - Fee Related CN103889095B (en) | 2012-12-21 | 2012-12-21 | Environment-friendly type LED lighting delay circuit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200941704Y (en) * | 2006-06-09 | 2007-08-29 | 姚荣湘 | Controllable LED luminous device |
| CN201134948Y (en) * | 2007-02-25 | 2008-10-15 | 谭蜀君 | Energy-saving light integrating energy conservation and emergency lighting |
| CN202392666U (en) * | 2011-11-30 | 2012-08-22 | 深圳建溢宝电子有限公司 | Emergency lamp |
| CN203072204U (en) * | 2012-12-21 | 2013-07-17 | 昆山引光奴电子科技有限公司 | Environment-friendly LED lighting delay circuit |
-
2012
- 2012-12-21 CN CN201210560331.1A patent/CN103889095B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200941704Y (en) * | 2006-06-09 | 2007-08-29 | 姚荣湘 | Controllable LED luminous device |
| CN201134948Y (en) * | 2007-02-25 | 2008-10-15 | 谭蜀君 | Energy-saving light integrating energy conservation and emergency lighting |
| CN202392666U (en) * | 2011-11-30 | 2012-08-22 | 深圳建溢宝电子有限公司 | Emergency lamp |
| CN203072204U (en) * | 2012-12-21 | 2013-07-17 | 昆山引光奴电子科技有限公司 | Environment-friendly LED lighting delay circuit |
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| CN103889095A (en) | 2014-06-25 |
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