CN102170736A - Automatic luminance stabilizing desk lamp - Google Patents
Automatic luminance stabilizing desk lamp Download PDFInfo
- Publication number
- CN102170736A CN102170736A CN2011100624603A CN201110062460A CN102170736A CN 102170736 A CN102170736 A CN 102170736A CN 2011100624603 A CN2011100624603 A CN 2011100624603A CN 201110062460 A CN201110062460 A CN 201110062460A CN 102170736 A CN102170736 A CN 102170736A
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- resistance
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- luminance
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- lamp
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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
Abstract
The invention, which belongs to the electronic technology application area, relates to an automatic luminance stabilizing desk lamp. The desk lamp consists of electric supply alternating current power supply, an incandescent lamp HL, a bidirectional thyristor, and a trigger circuit and a photosensitive circuit of the bidirectional thyristor. The desk lamp is characterized in that the trigger circuit of the bidirectional thyristor VS is a capacitance-resistance phase shift circuit, the photosensitive circuit is formed by connecting a photoresistor RG with a trimming resistor RP2 and a resistor R3 in tandem. The desk lamp can automatically adjust the luminance according to conditions of surrounding ambient light. When the ambient light is rather weak, the luminance is increased, and when the ambient light becomes strong, the luminance is darkened. The luminance of the luminance adjusting desk lamp can be adjusted by hand, and the adjusted incandescent lamp luminance does not change as the electrical network voltage fluctuates. The invention saves trouble of adjusting luminance by hand, protects eyesight, and is beneficial for saving electricity. The desk lamp has simple circuits which are totally composed of common components, is low in manufacture cost, and is suitable for factory batch production.
Description
Technical field
The invention belongs to the application of electronic technology field, relate to a kind of desk lamp of automatic stabilisation brightness.
Background technology
The circuit of common various lamp dimmers mostly is to adopt one-way SCR and RC circuits for triggering to form, also by forming the lamp dimmer circuit by elements such as bidirectional triode thyristor, diac and potentiometers.Their common feature is: the brightness of desk lamp need be by manually regulating, and desk lamp itself can not be regulated the brightness of light automatically along with the variation of surrounding environment light brightness.
The desk lamp of automatic stabilisation brightness of the present invention, it can be according to the strong and weak luminosity of adjusting desk lamp automatically of surrounding environment light.When ambient light was more weak, its luminosity will increase; When the ambient light grow, luminosity will deepening.This lamp dimmer not only brightness can manually be assisted adjustment, and adjusted incandescent lamp brightness can not change because of the fluctuation of line voltage.The present invention had both removed the trouble of manual light modulation from, also helped to protect the eyesight of eyes, also helped conservation of power consumption.
The circuit of the desk lamp of automatic stabilisation brightness of the present invention is simple, and circuit all uses common components and parts, and cost of manufacture is low, is well suited for factory and produces in batches, also is suitable for developing the novel reading lamp with automatic stabilisation brightness function.
Through the test of multiple scheme, relatively and analyze, the present invention uses a small amount of common discrete component, has realized that circuit structure is simple, cost is low, the designing requirement of effective, reliable working performance.
Related relevant technologies during below the desk lamp of this automatic stabilisation brightness of detailed description is made.
Summary of the invention
Goal of the invention and beneficial effect: the desk lamp of automatic stabilisation brightness of the present invention can be according to the strong and weak luminosity of adjusting desk lamp automatically of surrounding environment light.When ambient light was more weak, the desk lamp luminosity will increase; When the ambient light grow, the desk lamp luminosity will deepening.But not only brightness manual adjustment of this desk lamp, and adjusted incandescent lamp brightness can not change because of voltage ripple of power network.The present invention had both removed the trouble of manual light modulation from, can protect the eyesight of eyes, also helped conservation of power.The circuit of this desk lamp is simple, and circuit all uses common components and parts, and cost of manufacture is low, is well suited for factory and produces in batches, also is suitable for developing the novel reading lamp with automatic stabilisation brightness function.
Technical characterictic: the desk lamp of automatic stabilisation brightness is made up of civil power alternating current, incandescent lamp HL, bidirectional triode thyristor control and circuits for triggering thereof, photosensitive circuit, it is characterized in that: the circuits for triggering of bidirectional triode thyristor VS adopt rc phase shifter circuit, and photosensitive circuit is by photo resistance RG serial connection semifixed resistor RP2 and resistance R 3.
Annexation in each several part circuit composition and the circuit between the components and parts
1. the technical characterictic of bidirectional triode thyristor control is: the first anode T1 of bidirectional triode thyristor VS is with connecing the end of incandescent lamp HL and the end of potentiometer RP1, the live wire end L of another termination civil power alternating current of incandescent lamp HL, the second plate T2 of bidirectional triode thyristor VS meets the zero line side N of civil power alternating current.
2. rc phase shifter circuit: form by potentiometer RP1, resistance R 2, capacitor C 1 and resistance R 1, two-way triggering diode KS, it is characterized in that: the control utmost point G of the termination bidirectional triode thyristor VS of two-way triggering diode KS, link to each other with an end of resistance R 2, an end of capacitor C 1 and an end of resistance R 3 behind the other end series resistor R1 of two-way triggering diode KS, the lever arm of another termination potentiometer RP1 of resistance R 2 and the other end of potentiometer RP1, the zero line side N of another termination civil power alternating current of capacitor C 1.
3. photosensitive circuit: form by photo resistance RG, semifixed resistor RP2 and resistance R 3, it is characterized in that: the end of another termination semifixed resistor RP2 of resistance R 3 and the lever arm of semifixed resistor RP2, the end of another termination photo resistance RG of semifixed resistor RP2, the zero line side N of another termination civil power alternating current of photo resistance RG.
The circuit working principle: rc phase shifter circuit is made up of potentiometer RP1, resistance R 2 and capacitor C 1, and rc phase shifter circuit is determining the angle of flow of bidirectional triode thyristor VS.When capacitor C 1 both end voltage when resistance R 2, potentiometer RP1 charging rises to the voltage of two-way triggering diode KS conducting, the bidirectional triode thyristor VS conducting that is triggered.Regulator potentiometer RP1 can change the charging interval of capacitor C 1, thereby changes the angle of flow of bidirectional triode thyristor VS when the positive and negative half cycle of civil power alternating current, so that incandescent lamp HL obtains the brightness of needs.
Resistance R 3 in the accompanying drawing, semifixed resistor RP2 and photo resistance RG series connection back are in parallel with capacitor C 1.Under the situation that the resistance of resistance R 3, semifixed resistor RP2 is fixed, the size of electric current shunting is decided by the resistance of photo resistance RG.When line voltage rose, the brightness of incandescent lamp HL increased, and the illumination that photo resistance RG is subjected to increases, and its resistance reduces, and the electric current shunting increases, and the brightness of incandescent lamp HL reduces; It is slack-off that otherwise capacitor C 1 both end voltage rises, and the bidirectional triode thyristor VS angle of flow increases, and output voltage increases, the also corresponding increase of the brightness of incandescent lamp HL, so just automatically with output voltage stabilization on certain numerical value, thereby guaranteed stablizing of incandescent lamp HL brightness.
Description of drawings
Accompanying drawing is the circuit working schematic diagram of an embodiment of desk lamp of automatic stabilisation brightness provided by the invention.
Embodiment
Implement according to the circuit working schematic diagram of the desk lamp of automatic stabilisation brightness shown in the drawings and the components and parts specification requirement of description of drawings and the following stated, can realize the present invention.
The selection of components and parts and technical parameter thereof
1. all to select power for use be the 1/8W metalfilmresistor to resistance, and the resistance of resistance R 1 is 5.1K Ω, and the resistance of resistance R 2 is 6.8K Ω, and the resistance of resistance R 3 is 47K Ω;
2. the power of potentiometer RP1 is 2W, and its resistance is 47K Ω (a best charged source switch);
3. the resistance of semifixed resistor RP2 is 220K Ω;
Photo resistance RG, it can select models such as MG45 for use;
5. capacitor C 1 is selected electric capacity of the dacron for use, and capacity is 0.015～0.047 μ F, require withstand voltage 〉=400V;
6. the model that two-way triggering diode KS selects for use is DB-3;
7. can to select parameter for use be any model of 1A/400V to bidirectional triode thyristor VS;
8. incandescent lamp HL should use the incandescent lamp of power≤60W.
Manufacture method: photo resistance RG should place and require to be installed in the position that can receive desk lamp illumination.
Circuit debugging: when the circuit of the desk lamp of making automatic stabilisation brightness, as long as the electronic devices and components performance of selecting for use is intact, and the components and parts annexation in the accompanying drawing is welded to specifications, after physical connection line and welding quality process scrutiny are correct, but circuit is as long as debugging is with regard to operate as normal a little.
When circuit debugging, earlier semifixed resistor RP2 is transferred to minimum value (that is: resistance is zero position), and blocks light on the photo resistance RG with cardboard, make photo resistance RG can't accept the irradiation of light.After connecting mains supply, it is the brightest that regulator potentiometer RP1 is in light; Then cardboard is removed,, illustrated that the semifixed resistor RP2 of this moment does not need to regulate if light changes slightly; If be subjected to not change at photo resistance RG, then should regulate semifixed resistor RP2 and make light have decline to get final product slightly according to back brightness; After photo resistance RG was subjected to illumination, brightness altered a great deal, and then should suitably increase the resistance of resistance R 3; Semifixed resistor RP2 generally no longer needs to regulate in the use of desk lamp through after once adjusting.
Claims (4)
1. the desk lamp of an automatic stabilisation brightness is made up of civil power alternating current, incandescent lamp HL, bidirectional triode thyristor control and circuits for triggering thereof, photosensitive circuit, it is characterized in that: the circuits for triggering of bidirectional triode thyristor VS adopt rc phase shifter circuit, and photosensitive circuit is by photo resistance RG serial connection semifixed resistor RP2 and resistance R 3.
2. the desk lamp of automatic stabilisation brightness according to claim 1, the technical characterictic of bidirectional triode thyristor control is: the first anode T1 of bidirectional triode thyristor VS is with connecing the end of incandescent lamp HL and the end of potentiometer RP1, the live wire end L of another termination civil power alternating current of incandescent lamp HL, the second plate T2 of bidirectional triode thyristor VS meets the zero line side N of civil power alternating current.
3. the desk lamp of automatic stabilisation brightness according to claim 1, rc phase shifter circuit is made up of potentiometer RP1, resistance R 2, capacitor C 1 and resistance R 1, two-way triggering diode KS, it is characterized in that: the control utmost point G of the termination bidirectional triode thyristor VS of two-way triggering diode KS, link to each other with an end of resistance R 2, an end of capacitor C 1 and an end of resistance R 3 behind the other end series resistor R1 of two-way triggering diode KS, the lever arm of another termination potentiometer RP1 of resistance R 2 and the other end of potentiometer RP1, the zero line side N of another termination civil power alternating current of capacitor C 1.
4. the desk lamp of automatic stabilisation brightness according to claim 1, photosensitive circuit is made up of photo resistance RG, semifixed resistor RP2 and resistance R 3, it is characterized in that: the end of another termination semifixed resistor RP2 of resistance R 3 and the lever arm of semifixed resistor RP2, the end of another termination photo resistance RG of semifixed resistor RP2, the zero line side N of another termination civil power alternating current of photo resistance RG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100624603A CN102170736A (en) | 2011-03-16 | 2011-03-16 | Automatic luminance stabilizing desk lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100624603A CN102170736A (en) | 2011-03-16 | 2011-03-16 | Automatic luminance stabilizing desk lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102170736A true CN102170736A (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100624603A Pending CN102170736A (en) | 2011-03-16 | 2011-03-16 | Automatic luminance stabilizing desk lamp |
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| CN (1) | CN102170736A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102404923A (en) * | 2011-12-28 | 2012-04-04 | 洪珍 | Desk lamp capable of controlling brightness automatically |
| CN102497697A (en) * | 2011-11-25 | 2012-06-13 | 南昌大学 | Light-operated life-extension energy saving lamp switch circuit |
| CN104105241A (en) * | 2013-04-10 | 2014-10-15 | 四川华通特种工程塑料研究中心有限公司 | Lamp-operated table lamp |
| CN107476756A (en) * | 2017-10-12 | 2017-12-15 | 重庆市恒固席勒装饰工程有限公司 | A kind of screen window |
| CN108962152A (en) * | 2018-07-10 | 2018-12-07 | 重庆工业职业技术学院 | A kind of computer display brightness controller |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4009352A1 (en) * | 1990-03-23 | 1991-09-26 | Richard Baeumer | Pigeon-loft ventilation with control of fan speed - governed by two=stage triac circuit with temp.-dependent resistor and photoresistor responsive to oxygen demand |
| CN201037611Y (en) * | 2007-04-29 | 2008-03-19 | 费子翔 | LED desk lamp with automatic light stabilizing function |
| CN201983081U (en) * | 2011-03-16 | 2011-09-21 | 黄勇 | Table lamp capable of automatically stabilizing brightness |
-
2011
- 2011-03-16 CN CN2011100624603A patent/CN102170736A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4009352A1 (en) * | 1990-03-23 | 1991-09-26 | Richard Baeumer | Pigeon-loft ventilation with control of fan speed - governed by two=stage triac circuit with temp.-dependent resistor and photoresistor responsive to oxygen demand |
| CN201037611Y (en) * | 2007-04-29 | 2008-03-19 | 费子翔 | LED desk lamp with automatic light stabilizing function |
| CN201983081U (en) * | 2011-03-16 | 2011-09-21 | 黄勇 | Table lamp capable of automatically stabilizing brightness |
Non-Patent Citations (1)
| Title |
|---|
| 隋金库等: "三种功能的节能台灯电路设计", 《现代商贸工业》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497697A (en) * | 2011-11-25 | 2012-06-13 | 南昌大学 | Light-operated life-extension energy saving lamp switch circuit |
| CN102404923A (en) * | 2011-12-28 | 2012-04-04 | 洪珍 | Desk lamp capable of controlling brightness automatically |
| CN104105241A (en) * | 2013-04-10 | 2014-10-15 | 四川华通特种工程塑料研究中心有限公司 | Lamp-operated table lamp |
| CN107476756A (en) * | 2017-10-12 | 2017-12-15 | 重庆市恒固席勒装饰工程有限公司 | A kind of screen window |
| CN108962152A (en) * | 2018-07-10 | 2018-12-07 | 重庆工业职业技术学院 | A kind of computer display brightness controller |
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Application publication date: 20110831 |