CN204634115U - LED dimming electric torch - Google Patents
LED dimming electric torch Download PDFInfo
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- CN204634115U CN204634115U CN201520334000.5U CN201520334000U CN204634115U CN 204634115 U CN204634115 U CN 204634115U CN 201520334000 U CN201520334000 U CN 201520334000U CN 204634115 U CN204634115 U CN 204634115U
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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
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model is that its feature comprises about a kind of LED dimming electric torch: 4.5V DC power supply, squarer and pulse-width modulation circuit, light-emitting component; The model that in described squarer and pulse-width modulation circuit, time-base circuit IC1 selects is NE555.Have that volume is large to overcome common batteries incandescent flashlight, the large and defect that brightness is low of power consumption, LED dimming electric torch described in the utility model, its uses 3 joint 5# alkaline batteries just can light 4 super brightness white light-emitting diodes, the night lightings such as it is applicable to house, camps, out on tours.That in LED dimming electric torch circuit described in the utility model, core parts adopt is time-base circuit (NE555), regulate the brightness of LED, use pulse width modulation circuit, that is: PWM, LED dimming electric torch is a kind of energy-conservation, economic, practical technical scheme.
Description
Technical field
The utility model belongs to electronics and LED applied technical field, is about a kind of LED dimming electric torch.
Background technology
Operating current >=the 240mA of conventional two batteries incandescent flashlight, and only have 35 ~ 70mA with the flashlight operating current that LED makes, the power that ordinary incandescent lamp flashlight consumes is about 5 ~ 6 times of LED flashlight power, and the brightness of incandescent flashlight luminescence also can not show a candle to LED flashlight.
Have that volume is large to overcome common batteries incandescent flashlight, the large and defect that brightness is low of power consumption, LED dimming electric torch described in the utility model, its uses 3 joint 5# alkaline batteries just can light 4 super brightness white light-emitting diodes, the night lightings such as it is applicable to house, camps, out on tours.
That in LED dimming electric torch circuit described in the utility model, core parts adopt is time-base circuit (NE555), regulate the brightness of LED, use pulse width modulation circuit, that is: PWM, LED dimming electric torch is a kind of energy-conservation, economic, practical technical scheme.
Below describe in detail LED dimming electric torch described in the utility model necessity involved in implementation process, guardian technique content.
Utility model content
Goal of the invention and beneficial effect: have that volume is large to overcome common batteries incandescent flashlight, a large and defect that brightness is low of power consumption, LED dimming electric torch described in the utility model, its uses 3 joint 5# alkaline batteries just can light 4 super brightness white light-emitting diodes, the night lightings such as it is applicable to house, camps, out on tours.That in LED dimming electric torch circuit described in the utility model, core parts adopt is time-base circuit (NE555), regulate the brightness of LED, use pulse width modulation circuit, that is: PWM, LED dimming electric torch is a kind of energy-conservation, economic, practical technical scheme.
Circuit working principle: LED dimming electric torch described in the utility model, be connected into the adjustable squarer of duty ratio by time-base circuit IC1, pulse frequency is about 100Hz, and duty ratio size is regulated by linear potentiometer RP.The electric capacity C1 charging interval determines primarily of the first half of resistance R1, linear potentiometer RP and resistance R2 and the time constant of electric capacity C1, and discharge time is then determined by the latter half of linear potentiometer RP, the time constant of resistance R2 and electric capacity C1.In the electric capacity C1 charging interval, because the 2nd pin of time-base circuit IC1 is in low level, time-base circuit IC1 set, the 3rd pin is high level, and LED 1 ~ LED4 no current passes through.In electric capacity C1 discharge time, time-base circuit IC1 is in reset mode, and the 3rd pin output low level of time-base circuit IC1, LED 1 ~ LED4 has electric current to pass through.When linear potentiometer RP sliding end be positioned at comparatively go up position time, the electric capacity C1 charging interval shortens, discharge time lengthens, so the average current by LED 1 ~ LED4 in pulse one-period is less, LED 1 ~ LED4 luminosity is just little.When linear potentiometer RP sliding end moves down, the electric capacity C1 charging interval is elongated, and discharge time reduces, and just large by the average current of LED 1 ~ LED4 in pulse one-period, LED 1 ~ LED4 luminosity becomes large.So linear adjustment potentiometer RP just can change the luminosity of LED 1 ~ LED4.
Technical characteristic: LED dimming electric torch, it comprises 4.5V DC power supply, squarer and pulse-width modulation circuit, light-emitting component, it is characterized in that:
Squarer and pulse-width modulation circuit: it is by time-base circuit IC1, resistance R1, linear potentiometer RP, resistance R2, switching diode D1 and electric capacity C1 forms, the model that time-base circuit IC1 selects is NE555, 4th pin of time-base circuit IC1 and the 8th pin connection circuit positive pole VCC, 7th pin of time-base circuit IC1 connects the positive pole of switching diode D1 and the sliding end of linear potentiometer RP, one end of linear potentiometer RP is by resistance R1 connection circuit positive pole VCC, 2nd pin of time-base circuit IC1 and the 6th pin connect the negative pole of switching diode D1, one end of resistance R2 and one end of electric capacity C1, the other end of resistance R2 connects the other end of linear potentiometer RP, 1st pin of time-base circuit IC1 and the other end connection circuit ground GND of electric capacity C1,
Light-emitting component: it is made up of 4 super bright white light-emitting diode LED1 ~ LED4, 3rd pin of time-base circuit IC1 connects the negative pole of super bright white light-emitting diode LED2 and the negative pole of super bright white light-emitting diode LED4 by resistance R3, the positive pole of super bright white light-emitting diode LED2 connects the negative pole of super bright white light-emitting diode LED1, the positive pole connection circuit positive pole VCC of super bright white light-emitting diode LED1, the positive pole of super bright white light-emitting diode LED4 connects the negative pole of super bright white light-emitting diode LED3, the positive pole connection circuit positive pole VCC of super bright white light-emitting diode LED3,
4.5V DC power anode is connected with circuit anode VCC, and 4.5V DC power cathode is connected with circuit ground GND.
Accompanying drawing explanation
Accompanying drawing 1 is LED dimming electric torch embodiment circuit working schematic diagram that the utility model provides.
Embodiment
According to the LED dimming electric torch circuit working schematic diagram shown in accompanying drawing 1 and accompanying drawing explanation, and according to annexation between components and parts in each several part circuit described in utility model content, and components and parts technical parameter described in execution mode requires and circuit production main points are carried out enforcement and can be realized the utility model, is further described correlation technique of the present utility model below in conjunction with embodiment.
The technical parameter of components and parts and selection requirement thereof
IC1 is time-base circuit, and model is NE555, and it is encapsulated as 8 pin DIP, each pin function: 1 pin connection circuit ground GND; 2 pin are trigger end; 3 pin outputs; 4 pin preset ends; 5 pin are control voltage; 6 pin thresholdings (threshold value); 7 pin are discharge end; 8 pin meet positive source VCC.
D1 is switching diode, and the model selected is 1N4148;
Resistance R1 is metalfilmresistor, and its resistance is 3K Ω, and resistance R2 is metalfilmresistor, and its resistance is 3.6K Ω, and resistance R3 is metalfilmresistor, and its resistance is 5.1 Ω;
RP is linear potentiometer, and its resistance is 150K Ω;
C1 is electric capacity, available leaded multilayer ceramic capacitor or ceramic disc capacitor, and its capacity is 0.1 μ F/40V;
LED1 ~ LED4 is super bright white light-emitting diode, requires that diameter is that ￠ 5, technical parameter are consistent;
DC is 4.5V DC power supply, and 3 joint 5# alkaline batteries can be used to be composed in series.
Circuit production main points, circuit debugging and using method
Because the circuit structure of LED dimming electric torch is fairly simple, as long as the electronic devices and components performance generally selected is intact, and the components and parts annexation to specifications in accompanying drawing 1 is welded, physical connection line and welding quality are through carefully checking correctly, and circuit of the present utility model does not substantially need to carry out debugging and can normally work;
In circuit debugging, 4.5V DC power supply can first replace with the adjustable stabilized voltage supply of output current >=0.2A, if find, output load current does not reach 60mA, should first detect resistance R1, resistance R2 resistance whether correct, or the resistance of resistance R2 is suitably reduced to try it;
Output voltage adjusts: output voltage should >=4.1V, loaded work piece electric current about 45 ~ 56mA, if electric current is excessive, suitably should reduces the resistance of resistance R1 or increase the resistance of resistance R2, if desired can the resistance of once adjusting resistance R3 in right amount.
Circuit components layout of the present utility model, circuit structure design, its shape and size etc. of outward appearance are not all key technologies of the present utility model; neither the claimed technology contents of the utility model; because not affecting the utility model specific implementation process, therefore do not illustrate one by one in the description.
Claims (1)
1. a LED dimming electric torch, it comprises 4.5V DC power supply, squarer and pulse-width modulation circuit, light-emitting component, it is characterized in that:
Described squarer and pulse-width modulation circuit are by time-base circuit IC1, resistance R1, linear potentiometer RP, resistance R2, switching diode D1 and electric capacity C1 forms, the model that time-base circuit IC1 selects is NE555, 4th pin of time-base circuit IC1 and the 8th pin connection circuit positive pole VCC, 7th pin of time-base circuit IC1 connects the positive pole of switching diode D1 and the sliding end of linear potentiometer RP, one end of linear potentiometer RP is by resistance R1 connection circuit positive pole VCC, 2nd pin of time-base circuit IC1 and the 6th pin connect the negative pole of switching diode D1, one end of resistance R2 and one end of electric capacity C1, the other end of resistance R2 connects the other end of linear potentiometer RP, 1st pin of time-base circuit IC1 and the other end connection circuit ground GND of electric capacity C1,
Described light-emitting component is made up of 4 super bright white light-emitting diode LED1 ~ LED4, 3rd pin of time-base circuit IC1 connects the negative pole of super bright white light-emitting diode LED2 and the negative pole of super bright white light-emitting diode LED4 by resistance R3, the positive pole of super bright white light-emitting diode LED2 connects the negative pole of super bright white light-emitting diode LED1, the positive pole connection circuit positive pole VCC of super bright white light-emitting diode LED1, the positive pole of super bright white light-emitting diode LED4 connects the negative pole of super bright white light-emitting diode LED3, the positive pole connection circuit positive pole VCC of super bright white light-emitting diode LED3,
Described 4.5V DC power anode is connected with circuit anode VCC, and 4.5V DC power cathode is connected with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520334000.5U CN204634115U (en) | 2015-05-21 | 2015-05-21 | LED dimming electric torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520334000.5U CN204634115U (en) | 2015-05-21 | 2015-05-21 | LED dimming electric torch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204634115U true CN204634115U (en) | 2015-09-09 |
Family
ID=54053091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520334000.5U Expired - Fee Related CN204634115U (en) | 2015-05-21 | 2015-05-21 | LED dimming electric torch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204634115U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104812150A (en) * | 2015-05-21 | 2015-07-29 | 周芸 | LED (light-emitting diode) dimming flashlight |
| CN105848369A (en) * | 2016-06-02 | 2016-08-10 | 吴建堂 | Fade-on fade-off LED lighting lamp with adjustable luminance |
| CN106128051A (en) * | 2016-08-24 | 2016-11-16 | 吴圣铎 | Seeder seed falls to blocking HONGGUANG alarm device |
-
2015
- 2015-05-21 CN CN201520334000.5U patent/CN204634115U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104812150A (en) * | 2015-05-21 | 2015-07-29 | 周芸 | LED (light-emitting diode) dimming flashlight |
| CN105848369A (en) * | 2016-06-02 | 2016-08-10 | 吴建堂 | Fade-on fade-off LED lighting lamp with adjustable luminance |
| CN106128051A (en) * | 2016-08-24 | 2016-11-16 | 吴圣铎 | Seeder seed falls to blocking HONGGUANG alarm device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20160521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |