CN104684135A - Classroom illumination electric-saving circuit - Google Patents

Classroom illumination electric-saving circuit Download PDF

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Publication number
CN104684135A
CN104684135A CN201310611567.8A CN201310611567A CN104684135A CN 104684135 A CN104684135 A CN 104684135A CN 201310611567 A CN201310611567 A CN 201310611567A CN 104684135 A CN104684135 A CN 104684135A
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CN
China
Prior art keywords
resistance
triode
potentiometer
base chip
relay
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310611567.8A
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Chinese (zh)
Inventor
范桥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wheat Drawing Room Chengdu Information Technology Co Ltd
Original Assignee
Wheat Drawing Room Chengdu Information Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Wheat Drawing Room Chengdu Information Technology Co Ltd filed Critical Wheat Drawing Room Chengdu Information Technology Co Ltd
Priority to CN201310611567.8A priority Critical patent/CN104684135A/en
Publication of CN104684135A publication Critical patent/CN104684135A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The invention discloses a classroom illumination electric-saving circuit, which comprises an alternating current power source, a switch, a fuse, a transformer, a bridge type rectifier, a capacitor, a photoresistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first triode, a second triode, a diode, a relay, a first potentiometer, a second potentiometer, an illumination lamp and a 555 time-based chip. When the intensity of external transmitting light is increased, the resistance value of the photoresistor is reduced; when the voltages at the threshold end and triggering end of the 555 time-based chip are increased to the certain value, the voltages are compared by a comparator, the low level is outputted by the output end, the first triode and the second triode are cut off, a normally-opened contact switch of the relay is disconnected, and the indoor illumination lamp is cut off; or else, the indoor illumination lamp is switched on. The classroom illumination electric-saving circuit has the advantages that the resistance value of the photoresistor is changed because of the change of the light ray intensity, so the illumination circuit is automatically cut off when the light ray intensity is higher, and is automatically switched on when the light ray intensity is lower; the reaction is sensitive, and the electric energy is greatly saved.

Description

A kind of classroom illumination power save circuit
Technical field
The present invention relates to a kind of lighting circuit, particularly relate to a kind of classroom illumination power save circuit.
Background technology
Along with the development of electronic technology, especially the development of digital technology, automatically shinny, economizing on energy and electricity, prolongation lamp the life-span realizing lamp with digital circuit technique becomes more and more important, and press close to our real life, lighting lamp for classroom is that student learns when insufficient light to provide guarantee, but needs staff to move cut-off switch when light is stronger, cumbersome, automatic power-off circuit provides a great convenience for people, but a lot of automatic power-off circuit sensitivity is not high, waste electric energy.
Summary of the invention
Object of the present invention is just to provide a kind of classroom illumination power save circuit to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of classroom illumination power save circuit, comprises AC power, switch, fuse, transformer, bridge rectifier, electric capacity, photo resistance, first resistance is to the 4th resistance, first triode, second triode, diode, relay, first potentiometer, second potentiometer, illuminating lamp and 555 time base chip, the first end of described AC power is connected with the first end of described switch, second end of described switch is connected with the first end of described fuse, second end of described fuse is connected with the first end of the primary coil of described transformer, second end of described AC power is connected with the second end of the primary coil of described transformer, the first end of the secondary coil of described transformer is connected with the first voltage end of described bridge rectifier, second end of the secondary coil of described transformer is connected with the second voltage end of described bridge rectifier, the positive pole of described bridge rectifier respectively with the first end of described photo resistance, the first end of described electric capacity, the reset terminal of base chip when described 555, the voltage end of base chip when described 555, the first end of described 3rd resistance, the emitter of described second triode is connected with the first end of described illuminating lamp, second end of described photo resistance is connected with the first end of described first potentiometer, second end of described first potentiometer is connected with the first end of described first resistance, the sliding end of described photo resistance respectively with described 555 time base chip threshold value end and described 555 time base chip trigger end be connected, when described 555, the control voltage end of base chip is connected with the first end of described second potentiometer, when described 555, the output of base chip is connected with the first end of described second resistance, second end of described second resistance is connected with the base stage of described first triode, the collector electrode of described first triode is connected with the second end of described 3rd resistance and the first end of described 4th resistance respectively, second end of described 4th resistance is connected with the base stage of described second triode, the collector electrode of described second triode is connected with the negative pole of described diode and the first end of described relay respectively, second end of described illuminating lamp is connected with the first end of the normally opened contact switch of described relay, second end of the normally opened contact switch of described relay respectively with the second end of described relay, the positive pole of described diode, the emitter of described first triode, second end of described second potentiometer, the sliding end of described second potentiometer, the earth terminal of base chip when described 555, second end of described first resistance, second end of described electric capacity is connected with the negative pole of described bridge rectifier.
Beneficial effect of the present invention is:
The present invention is a kind of classroom illumination power save circuit, utilize photo resistance to cause the change of resistance because of the change of light intensity, automatically cut off lighting circuit when light intensity is higher, automatically connect lighting circuit when light intensity is more weak, be quick on the draw, greatly saved electric energy.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of classroom illumination power save circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, a kind of classroom illumination power save circuit of the present invention, comprises AC power AC, switch S, fuse FU, transformer T, bridge rectifier BR, electric capacity C, photo resistance RL, first resistance R1 is to the 4th resistance R4, first triode VT1, second triode VT2, diode D, relay J, first potentiometer RP1, second potentiometer RP2, base chip IC during illuminating lamp H and 555, the first end of AC power AC is connected with the first end of switch S, second end of switch S is connected with the first end of fuse FU, second end of fuse FU is connected with the first end of the primary coil of transformer T, second end of AC power AC is connected with the second end of the primary coil of transformer T, the first end of the secondary coil of transformer T is connected with first voltage end of bridge rectifier BR, second end of the secondary coil of transformer T is connected with second voltage end of bridge rectifier BR, the positive pole of bridge rectifier BR respectively with the first end of photo resistance RL, the first end of electric capacity C, the reset terminal of base chip IC when 555, the voltage end of base chip IC when 555, the first end of the 3rd resistance R3, the emitter of the second triode VT2 is connected with the first end of illuminating lamp H, second end of photo resistance RL is connected with the first end of the first potentiometer RP1, second end of the first potentiometer RP1 is connected with the first end of the first resistance R1, the sliding end of photo resistance RL respectively with 555 time base chip IC threshold value end and 555 time base chip IC trigger end be connected, when 555, the control voltage end of base chip IC is connected with the first end of the second potentiometer RP2, when 555, the output of base chip IC is connected with the first end of the second resistance R2, second end of the second resistance R2 is connected with the base stage of the first triode VT1, the collector electrode of the first triode VT1 is connected with second end of the 3rd resistance R3 and the first end of the 4th resistance R4 respectively, second end of the 4th resistance R4 is connected with the base stage of the second triode VT2, the collector electrode of the second triode VT2 is connected with the negative pole of diode D and the first end of relay J respectively, second end of illuminating lamp H is connected with the first end of the normally opened contact switch J-1 of relay J, second end of the normally opened contact switch J-1 of relay J respectively with the second end of relay J, the positive pole of diode D, the emitter of the first triode VT1, second end of the second potentiometer RP2, the sliding end of the second potentiometer RP2, the earth terminal of base chip IC when 555, second end of the first resistance R1, second end of electric capacity C is connected with the negative pole of bridge rectifier BR.
Base chip IC when civil power supplies 555 after step-down, rectification, filtering, photo resistance RL, the first potentiometer RP1, the first resistance R1 and electric capacity C for 555 time base chip IC a comparison signal is provided.During setting intensity of illumination, can by adjusting the first potentiometer RP1 and the second potentiometer RP2 has come, when emanating light changes from weak to strong according to intensity, the resistance of photo resistance RL from large to small, when when 555, the threshold value end of base chip IC and trigger end voltage rise are to certain value, after comparator compares, output output low level, first triode VT1 and the second triode VT2 ends, the normally opened contact switch J-1 of relay J disconnects, cut off indoor illumination H, otherwise namely connect indoor illumination H.

Claims (1)

1. a classroom illumination power save circuit, is characterized in that: comprise AC power, switch, fuse, transformer, bridge rectifier, electric capacity, photo resistance, first resistance is to the 4th resistance, first triode, second triode, diode, relay, first potentiometer, second potentiometer, illuminating lamp and 555 time base chip, the first end of described AC power is connected with the first end of described switch, second end of described switch is connected with the first end of described fuse, second end of described fuse is connected with the first end of the primary coil of described transformer, second end of described AC power is connected with the second end of the primary coil of described transformer, the first end of the secondary coil of described transformer is connected with the first voltage end of described bridge rectifier, second end of the secondary coil of described transformer is connected with the second voltage end of described bridge rectifier, the positive pole of described bridge rectifier respectively with the first end of described photo resistance, the first end of described electric capacity, the reset terminal of base chip when described 555, the voltage end of base chip when described 555, the first end of described 3rd resistance, the emitter of described second triode is connected with the first end of described illuminating lamp, second end of described photo resistance is connected with the first end of described first potentiometer, second end of described first potentiometer is connected with the first end of described first resistance, the sliding end of described photo resistance respectively with described 555 time base chip threshold value end and described 555 time base chip trigger end be connected, when described 555, the control voltage end of base chip is connected with the first end of described second potentiometer, when described 555, the output of base chip is connected with the first end of described second resistance, second end of described second resistance is connected with the base stage of described first triode, the collector electrode of described first triode is connected with the second end of described 3rd resistance and the first end of described 4th resistance respectively, second end of described 4th resistance is connected with the base stage of described second triode, the collector electrode of described second triode is connected with the negative pole of described diode and the first end of described relay respectively, second end of described illuminating lamp is connected with the first end of the normally opened contact switch of described relay, second end of the normally opened contact switch of described relay respectively with the second end of described relay, the positive pole of described diode, the emitter of described first triode, second end of described second potentiometer, the sliding end of described second potentiometer, the earth terminal of base chip when described 555, second end of described first resistance, second end of described electric capacity is connected with the negative pole of described bridge rectifier.
CN201310611567.8A 2013-11-27 2013-11-27 Classroom illumination electric-saving circuit Pending CN104684135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310611567.8A CN104684135A (en) 2013-11-27 2013-11-27 Classroom illumination electric-saving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310611567.8A CN104684135A (en) 2013-11-27 2013-11-27 Classroom illumination electric-saving circuit

Publications (1)

Publication Number Publication Date
CN104684135A true CN104684135A (en) 2015-06-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310611567.8A Pending CN104684135A (en) 2013-11-27 2013-11-27 Classroom illumination electric-saving circuit

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CN (1) CN104684135A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105578681A (en) * 2015-12-14 2016-05-11 广东威创视讯科技股份有限公司 Lighting control circuit
CN106604497A (en) * 2016-12-05 2017-04-26 成都小晓学教育咨询有限公司 Intelligent lighting system for classrooms

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105578681A (en) * 2015-12-14 2016-05-11 广东威创视讯科技股份有限公司 Lighting control circuit
CN106604497A (en) * 2016-12-05 2017-04-26 成都小晓学教育咨询有限公司 Intelligent lighting system for classrooms

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Application publication date: 20150603