CN101742772A - Signal indication lamp and LED flashing control circuit - Google Patents
Signal indication lamp and LED flashing control circuit Download PDFInfo
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- CN101742772A CN101742772A CN200910189419A CN200910189419A CN101742772A CN 101742772 A CN101742772 A CN 101742772A CN 200910189419 A CN200910189419 A CN 200910189419A CN 200910189419 A CN200910189419 A CN 200910189419A CN 101742772 A CN101742772 A CN 101742772A
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Abstract
The invention relates to a signal indication lamp and an LED flashing control circuit; in the control circuit, one end that a resistance R1 and a resistance R4 are connected in series is connected with the anode of the output end of a power supply, and the other end is connected with the output end cathode of the power supply, and the connection point is connected with the non-inverting input end of an operational amplifier, a resistance R3 is serially connected between the output end of the operational amplifier and the non-inverting input end, a resistance R2 is connected serially between the output end of the operational amplifier and an inverting input end, a capacitance is connected between the inverter input end of the operational amplifier and the cathode of the output end of the power supply; the output end of the operational amplifier is connected with a base electrode of an audion, the emitting electrode of the audion is connected with the output end cathode of the power supply, and an LED light source is connected serially between the collector electrode of the audion and the output end anode of the power supply; by adopting the technical proposal of the embodiment of the invention, the traditional singlechip is replaced by the operational amplifier, thereby being suitable for middle-high voltage power supply; in addition, the operational amplifier has the advantages of low price, small power consumption, high efficiency, less devices of a peripheral circuit and the like.
Description
Technical field
The present invention relates to lighting technical field, more particularly, relate to a kind of signal lamp and LED flashing control circuit.
Background technology
Continuous development along with science and technology, the new product new technology is constantly reformed, LED is as new type light source, it has energy-conservation, environmental protection, characteristics of high efficiency, technology is ripe and be applied to every field, for example, LED is as signal lamp, and is widely-used in the mode of flash of light, various flashing control circuits have also appearred thereupon, wherein single-chip microcomputer has power consumption little as a kind of intelligent control chip commonly used, simplicity of design, convenient, flexible advantage is extensively adopted by people, but the single-chip microcomputer operating voltage range is on the low side, when supply power voltage was higher, The application of single-chip computer just was restricted, and brought very big inconvenience to the user.
Summary of the invention
The technical problem to be solved in the present invention is, can not be suitable for the defective of the higher power supply of voltage at the above-mentioned flasher circuit of prior art, and a kind of LED flashing control circuit is provided, and can adapt to middle and high power voltage supply power supply.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of LED flashing control circuit, comprise triode Q1, operational amplifier, resistance R 1, resistance R 2, resistance R 3, resistance R 4 and capacitor C 2; The output head anode of described resistance R 1 and resistance R 4 series connection backs one termination power, the negative pole of output end of another termination power; The tie point of described resistance R 1 and resistance R 4 connects the in-phase input end of described operational amplifier, the described resistance R 3 of connecting between the output of described operational amplifier and the in-phase input end, the described resistance R 2 of connecting between the output of described operational amplifier and the inverting input, described capacitor C 2 are connected between the negative pole of output end of the inverting input of described operational amplifier and power supply; The output of described operational amplifier connects the base stage of described triode Q1, and the emitter of described triode Q1 connects the negative pole of output end of power supply, series LED light source between the collector electrode of described triode Q1 and the output head anode of described power supply.
In LED flashing control circuit of the present invention, the scope of described supply voltage is direct current 4V-30V.
In LED flashing control circuit of the present invention, the resistance by adjusting resistance R 2 and the capacitance of capacitor C 2 are adjusted the flicker frequency of led light source.
In LED flashing control circuit of the present invention, also comprise counnter attack diode D1, the negative pole of described counnter attack diode D1 connects the negative pole of output end of described power supply, and its positive pole connects the emitter of described resistance R 4, capacitor C 2, triode Q1 respectively.
In LED flashing control circuit of the present invention, also comprise civilian ripple capacitor C 1, the positive pole of described civilian ripple capacitor C 1 connects the output head anode of described power supply, and its negative pole connects the negative pole of output end of described power supply.
The present invention also constructs a kind of signal lamp, comprises led light source, also comprises triode Q1, operational amplifier, resistance R 1, resistance R 2, resistance R 3, resistance R 4 and capacitor C 2; The output head anode of described resistance R 1 and resistance R 4 series connection backs one termination power, the negative pole of output end of another termination power; The tie point of described resistance R 1 and resistance R 4 connects the in-phase input end of described operational amplifier, the described resistance R 3 of connecting between the output of described operational amplifier and the in-phase input end, the described resistance R 2 of connecting between the output of described operational amplifier and the inverting input, described capacitor C 2 are connected between the negative pole of output end of the inverting input of described operational amplifier and power supply; The tie point of described resistance R 2 and described resistance R 3 connects the output of described operational amplifier, and the output of described operational amplifier connects the base stage of described triode Q1, the emitter of described triode Q1 connects the negative pole of output end of power supply, series LED light source between the collector electrode of described triode Q1 and the output head anode of described power supply.
In signal lamp of the present invention, described led light source is made up of the LED of a plurality of series connection or is made up of or the LED of a plurality of mixing connection forms the LED of a plurality of parallel connections, the collector electrode of described triode Q1 connects the negative input of led light source, and the electrode input end of described led light source connects the output head anode of described power supply.
In signal lamp of the present invention, also comprise counnter attack diode D1, the negative pole of described counnter attack diode D1 connects the negative pole of output end of described power supply, and its positive pole connects the emitter of described resistance R 4, capacitor C 2, triode Q1 respectively.
In signal lamp of the present invention, also comprise civilian ripple capacitor C 1, the positive pole of described civilian ripple capacitor C 1 connects the output head anode of described power supply, and its negative pole connects the negative pole of output end of described power supply.
Implement signal lamp of the present invention and LED flashing control circuit, owing to adopt operational amplifier to replace traditional single-chip microcomputer, therefore can applicable middle and high pressure power supply, and use operational amplifier to have advantages such as price is low, power consumption is little, efficient is high, the peripheral circuit components and parts are few.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the circuit diagram of LED flashing control circuit embodiment one of the present invention;
Embodiment
As shown in Figure 1, in the circuit diagram of LED flashing control circuit embodiment one of the present invention, this flashing control circuit comprises civilian ripple capacitor C 1, counnter attack diode D1, resistance R 1, resistance R 2, resistance R 3, resistance R 4, capacitor C 2, triode Q1, operational amplifier, wherein, it is the operational amplifier U1 of LM258 that operational amplifier adopts model, it is the 1st years old, 2,3 pin are one group of voltage comparators, it is the 5th years old, 6,7 pin are one group of voltage comparators, the 1st, 7 pin are the output of device as a comparison, 2,6 pin are the inverting input of device as a comparison, 3,5 pin are the normal phase input end of device as a comparison, and led light source is connected in parallel by the many groups of LED that connect again and forms.The negative pole of counnter attack diode D1 connects the negative pole of output end of power supply, the positive pole of literary composition ripple capacitor C 1 connects the output head anode of power supply, its negative pole connects the positive pole of counnter attack diode D1, the output head anode of resistance R 1 and resistance R 4 series connection backs one termination power, its other end is taken over control the positive pole of anti-diode D1, the tie point of resistance R 1 and resistance R 4 connects the 3rd pin of operational amplifier U1, be connected resistance R 3 between the 3rd pin of operational amplifier U1 and the 1st pin, be connected resistance R 2 between the 2nd pin of operational amplifier U1 and the 1st pin; Capacitor C 2 is connected between the positive pole of the 2nd pin of operational amplifier U1 and counnter attack diode D1, the 8th pin of operational amplifier U1 connects the output head anode of power supply, its the 4th pin is taken over control the positive pole of anti-diode D1, be ground connection, in the present embodiment, owing to only use one group of voltage comparator, therefore, the 5th of operational amplifier U1,6,7 pin are ground connection in the lump, the 1st pin of operational amplifier U1 also connects the base stage of triode Q1, the emitter of triode Q1 is taken over control the positive pole of anti-diode D1, and its collector electrode connects the negative pole of led light source, and the positive pole of led light source connects the output head anode of power supply.
The operation principle of circuit below is described, when circuit working, the Wen Bo that literary composition ripple capacitor C 1 produces when being used to eliminate mains fluctuations, to improve the quality of power supply, counnter attack diode D1 damages late-class circuit when being used to prevent the both positive and negative polarity reversal connection of power supply, shield, behind the supply voltage place in circuit, the 8th pin of operational amplifier U1 must be established beginning work by cable, supply voltage is through resistance R 1, after resistance R 4 dividing potential drops, signal is provided for the 3rd pin of operational amplifier U1, to obtain the reference voltage of operational amplifier, simultaneously, supply voltage is through resistance R 1, resistance R 3 and resistance R 2 are capacitor C 2 chargings, the voltage at capacitor C 2 two ends raises gradually, also be, the voltage of the inverting input of operational amplifier U1 raises gradually, in the process of capacitor C 2 chargings, if the inverting input voltage of operational amplifier U1 is less than normal phase input end voltage (reference voltage), output output direct impulse, if the inverting input voltage of operational amplifier U1 is greater than normal phase input end voltage (reference voltage), the output saltus step is a negative-going pulse, when capacitor C 2 chargings are finished, just begin discharge, in the process of capacitor C 2 chargings, if the inverting input voltage of operational amplifier U1 is greater than normal phase input end voltage (reference voltage), output output negative-going pulse, if the inverting input voltage of operational amplifier U1 is less than normal phase input end voltage (reference voltage), the output saltus step is a direct impulse, therefore, by the inverting input change in voltage that can make operational amplifier U1 to discharging and recharging of capacitor C 2, inverting input and normal phase input end voltage are compared the output output pulse signal that can make operational amplifier, this pulse signal drives triode work, be specially: the direct impulse signal makes triode Q1 conducting, thereby make the positive pole of led light source insert the output head anode of power supply, its negative pole inserts the negative pole of output end of power supply, and led light source is luminous; Negative-going pulse makes not conducting of triode Q1, thereby makes led light source not have the access supply voltage, and led light source is not luminous, and therefore, direct impulse and negative-going pulse alternately occur just making the led light source flicker luminous.
The flashing control circuit of the invention described above, owing to adopt operational amplifier to replace traditional single-chip microcomputer, so applicable middle and high pressure power supply, middle and high pressure power supply can be the voltage in the direct current 4V-30V scope, and uses operational amplifier to have advantages such as price is low, power consumption is little, efficient is high, the peripheral circuit components and parts are few.
In addition, the resistance of adjustment resistance R 2 and the capacitance of capacitor C 2 just can change the flicker frequency of led light source, and be easy to adjust.For example, the capacitance that increases capacitor C 2 just can be accelerated the flicker frequency of led light source, and the capacitance that reduces capacitor C 2 just can slow down the flicker frequency of led light source.
Operational amplifier U1 in the foregoing description is a dual operational amplifier, and the 5th, 6,7 pin of operational amplifier U1 also can insert another group flashing control circuit, drives another group led light source work, and circuit is simple and reliable, and entire circuit cheapness, light.
Should be noted that, more than be embodiments of the invention, be not limited to the present invention, operational amplifier can be selected the operational amplifier of models such as LM158, LM358, LM3904 for use, also can select single operational amplifier for use, led light source can be composed in series by a plurality of LED, also can compose in parallel, also can become, in a word by a plurality of LED mixing joint groups by a plurality of LED, its series-parallel system and quantity can be according to the height independent assortments of supply voltage, and is quite convenient.
The present invention also constructs a kind of signal lamp, and this signal lamp adopts above-described LED flashing control circuit, can make the signal lamp flicker luminous.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (9)
1. a LED flashing control circuit is characterized in that, comprises triode Q1, operational amplifier, resistance R 1, resistance R 2, resistance R 3, resistance R 4 and capacitor C 2; The output head anode of described resistance R 1 and resistance R 4 series connection backs one termination power, the negative pole of output end of another termination power; The tie point of described resistance R 1 and resistance R 4 connects the in-phase input end of described operational amplifier, the described resistance R 3 of connecting between the output of described operational amplifier and the in-phase input end, the described resistance R 2 of connecting between the output of described operational amplifier and the inverting input, described capacitor C 2 are connected between the negative pole of output end of the inverting input of described operational amplifier and power supply; The output of described operational amplifier connects the base stage of described triode Q1, and the emitter of described triode Q1 connects the negative pole of output end of power supply, series LED light source between the collector electrode of described triode Q1 and the output head anode of described power supply.
2. LED flashing control circuit according to claim 1 is characterized in that, the scope of described supply voltage is direct current 4V-30V.
3. LED flashing control circuit according to claim 1 is characterized in that, the resistance by adjusting resistance R 2 and the capacitance of capacitor C 2 are adjusted the flicker frequency of led light source.
4. LED flashing control circuit according to claim 1, it is characterized in that, also comprise counnter attack diode D1, the negative pole of described counnter attack diode D1 connects the negative pole of output end of described power supply, and its positive pole connects the emitter of described resistance R 4, capacitor C 2, triode Q1 respectively.
5. LED flashing control circuit according to claim 1 is characterized in that, also comprises civilian ripple capacitor C 1, and the positive pole of described civilian ripple capacitor C 1 connects the output head anode of described power supply, and its negative pole connects the negative pole of output end of described power supply.
6. a signal lamp comprises led light source, it is characterized in that, also comprises triode Q1, operational amplifier, resistance R 1, resistance R 2, resistance R 3, resistance R 4 and capacitor C 2; The output head anode of described resistance R 1 and resistance R 4 series connection backs one termination power, the negative pole of output end of another termination power; The tie point of described resistance R 1 and resistance R 4 connects the in-phase input end of described operational amplifier, the described resistance R 3 of connecting between the output of described operational amplifier and the in-phase input end, the described resistance R 2 of connecting between the output of described operational amplifier and the inverting input, described capacitor C 2 are connected between the negative pole of output end of the inverting input of described operational amplifier and power supply; The tie point of described resistance R 2 and described resistance R 3 connects the output of described operational amplifier, and the output of described operational amplifier connects the base stage of described triode Q1, the emitter of described triode Q1 connects the negative pole of output end of power supply, series LED light source between the collector electrode of described triode Q1 and the output head anode of described power supply.
7. signal lamp according to claim 6, it is characterized in that, described led light source is made up of the LED of a plurality of series connection or is made up of or the LED of a plurality of mixing connection forms the LED of a plurality of parallel connections, the collector electrode of described triode Q1 connects the negative input of led light source, and the electrode input end of described led light source connects the output head anode of described power supply.
8. signal lamp according to claim 6 is characterized in that, also comprises counnter attack diode D1, and the negative pole of described counnter attack diode D1 connects the negative pole of output end of described power supply, and its positive pole connects the emitter of described resistance R 4, capacitor C 2, triode Q1 respectively.
9. signal lamp according to claim 6 is characterized in that, also comprises civilian ripple capacitor C 1, and the positive pole of described civilian ripple capacitor C 1 connects the output head anode of described power supply, and its negative pole connects the negative pole of output end of described power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910189419A CN101742772A (en) | 2009-12-24 | 2009-12-24 | Signal indication lamp and LED flashing control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910189419A CN101742772A (en) | 2009-12-24 | 2009-12-24 | Signal indication lamp and LED flashing control circuit |
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| CN101742772A true CN101742772A (en) | 2010-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910189419A Pending CN101742772A (en) | 2009-12-24 | 2009-12-24 | Signal indication lamp and LED flashing control circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219814A (en) * | 2013-05-29 | 2014-12-17 | 海洋王（东莞）照明科技有限公司 | Electric circuit of twinkling lamp and lamp |
| CN104349528A (en) * | 2013-07-25 | 2015-02-11 | 昆达电脑科技(昆山)有限公司 | Indicating lamp status display system |
| CN104902629A (en) * | 2015-05-21 | 2015-09-09 | 苏州工业职业技术学院 | Intelligent LED table lamp |
| CN110322649A (en) * | 2019-07-10 | 2019-10-11 | 深圳摩特智能控制有限公司 | A kind of control system for photoelectric sensor |
-
2009
- 2009-12-24 CN CN200910189419A patent/CN101742772A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219814A (en) * | 2013-05-29 | 2014-12-17 | 海洋王（东莞）照明科技有限公司 | Electric circuit of twinkling lamp and lamp |
| CN104219814B (en) * | 2013-05-29 | 2017-02-08 | 海洋王（东莞）照明科技有限公司 | Electric circuit of twinkling lamp and lamp |
| CN104349528A (en) * | 2013-07-25 | 2015-02-11 | 昆达电脑科技(昆山)有限公司 | Indicating lamp status display system |
| CN104349528B (en) * | 2013-07-25 | 2016-10-05 | 昆达电脑科技(昆山)有限公司 | LED status display system |
| CN104902629A (en) * | 2015-05-21 | 2015-09-09 | 苏州工业职业技术学院 | Intelligent LED table lamp |
| CN110322649A (en) * | 2019-07-10 | 2019-10-11 | 深圳摩特智能控制有限公司 | A kind of control system for photoelectric sensor |
| CN110322649B (en) * | 2019-07-10 | 2024-05-03 | 广东摩特智能控制有限公司 | Control system for photoelectric sensor |
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Application publication date: 20100616 |