CN105120586A - Ultralow-dropout LED flashlight - Google Patents
Ultralow-dropout LED flashlight Download PDFInfo
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- CN105120586A CN105120586A CN201510650085.2A CN201510650085A CN105120586A CN 105120586 A CN105120586 A CN 105120586A CN 201510650085 A CN201510650085 A CN 201510650085A CN 105120586 A CN105120586 A CN 105120586A
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- ultralow
- differential pressure
- ultra low
- positive pole
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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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Abstract
The invention provides an ultralow-dropout LED flashlight. The ultralow-dropout LED flashlight is characterized by comprising a 2.7-6V direct-current power supply, an ultralow-dropout current stabilizing circuit, light-emitting components LED2-LED4 and a battery working state indication circuit, wherein the selected model of an ultralow-dropout current stabilizer IC1 in the ultralow-dropout current stabilizing circuit is AMC7135. In order to overcome the defects of large size, high power consumption and low luminance of a common flashlight with a battery and an incandescent light bulb, the ultralow-dropout LED flashlight adopts the special ultralow-dropout LED drive integrated circuit (AMC7135), three white light-emitting diodes with high luminance can be lighted up with one lithium battery, and the ultralow-dropout LED flashlight has the characteristics of electric power saving, convenience in use, long service life and the like. The technical scheme can be also applied to a miner's lamp and emergency illuminance or applied to solar electric power supply illumination and the like.
Description
Technical field
The invention belongs to low voltage difference power module and LED applied technical field, is about a kind of ultra low differential pressure LED flashlight.
Background technology
Operating current >=the 240mA of conventional two batteries incandescent flashlight, incandescent flashlight battery is not durable, it was not long will change battery, this brings very burden and waste to user, and only have 45 ~ 60mA 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, ultra low differential pressure LED flashlight of the present invention, it have employed special ultra low differential pressure LED drive integrated circult (AMC7135), it can light 3 high brightness white light-emitting diodes with a joint lithium battery, it have electricity economize, easy to use, the features such as long service life.This technical scheme also can be applicable to mine lamp, emergency lighting, or for aspects such as solar powered illuminations.
Below describe that ultra low differential pressure LED flashlight of the present invention is involved necessary in implementation process, guardian technique content in detail.
Summary of the invention
Goal of the invention and beneficial effect: for having that volume is large to overcome common batteries incandescent flashlight, the large and defect that brightness is low of power consumption, ultra low differential pressure LED flashlight of the present invention, it have employed special ultra low differential pressure LED drive integrated circult (AMC7135), it can light 3 high brightness white light-emitting diodes with a joint lithium battery, it have electricity economize, easy to use, the features such as long service life.This technical scheme also can be applicable to mine lamp, emergency lighting, or for aspects such as solar powered illuminations.
Circuit working principle: the core parts in ultra low differential pressure LED flashlight use a kind of ultra low differential pressure flow straightener, it can export 350mA constant current and promote below 3W high-brightness light emitting diode LED, can realize the double effects of brightness stability, the increase of battery gross output.Whole circuit need not other components and parts external, and have the functions such as output short-circuit, open-circuit-protection and overtemperature protection.The characteristic of its ultra low differential pressure, low quiescent current, substantially prolongs the useful life of battery.LED 1 in circuit indicates for power work state.
Technical scheme: ultra low differential pressure LED flashlight, it comprises 2.7 ~ 6V DC power supply, ultra low differential pressure current stabilization circuit, light-emitting component LED2 ~ LED4 and cell operating status indicating circuit, it is characterized in that:
Ultra low differential pressure current stabilization circuit: the model that ultra low differential pressure flow straightener IC1 selects is AMC7135, the power cathode VSS connection circuit ground GND of the positive source VDD connection circuit positive pole VCC of ultra low differential pressure flow straightener IC1, ultra low differential pressure flow straightener IC1;
Light-emitting component LED2 ~ LED4 selects 3 highlighted white light-emitting diodes, the negative pole of the output termination bright white look LED 2 of the positive pole connection circuit positive pole VCC of the positive pole of highlighted white LED 2 and the positive pole of highlighted white LED 3 and highlighted white LED 4, ultra low differential pressure flow straightener IC1 and the negative pole of highlighted white LED 3 and the negative pole of highlighted white LED 4;
Cell operating status indicating circuit: it is made up of resistance R1 and LED 1, the positive pole of LED 1 passes through resistance R1 connection circuit positive pole VCC, the negative pole connection circuit ground GND of LED 1;
The positive pole of 2.7 ~ 6V DC power supply is by mains switch SW connection circuit positive pole VCC, and the negative pole of 2.7 ~ 6V DC power supply is connected with circuit ground GND, and 2.7 ~ 6V DC power supply can use the lithium battery that a joint capacity is more than 1000mAH.
Accompanying drawing explanation
Accompanying drawing 1 is the circuit working schematic diagram that the invention provides a ultra low differential pressure LED flashlight embodiment.
Embodiment
According to the ultra low differential pressure LED flashlight 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 summary of the invention, 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 present invention, is further described correlation technique of the present invention below in conjunction with embodiment.
The technical parameter of components and parts and selection requirement
IC1 is ultra low differential pressure flow straightener, and its operating voltage range is 2.7 ~ 6V, and the model selected is AMC7135, and it is encapsulated as 3 pin;
Resistance R1 is step-down current-limiting resistance, and the resistance of use is 350 Ω;
LED1 is light-emitting diode, selects the green common light emitting diode of ￠ 3;
LED2 ~ LED4 is highlighted white light-emitting diode, require that diameter is that ￠ 5,3 highlighted white light-emitting diodes will note selecting operation technique parameter consistent, because the technical parameter discreteness of some light-emitting diode is very large, as: under normal voltage, its forward reverse resistance is inconsistent, makes its working current value deviation larger;
DC is the lithium battery of a joint capacity 1000mAH, or selects 3 ~ 4 joint 5#, capacity to be the nickel-hydrogen chargeable cell of more than 1000mAH.
Circuit production main points, circuit debugging and using method
Because the circuit structure of ultra low differential pressure LED flashlight is fairly simple, one piece of AMC7135 integrated package is only had in circuit, 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 invention does not need to carry out any debugging and can normally work;
It should be noted that flashlight is long-time not between the operating period, need to take out the battery in flashlight, corrode flashlight housing and circuit to prevent battery leakage.
Circuit structure design of the present invention, components' placement; and its face shaping and size etc. thereof are not all key technologies of the present invention; neither application claims protection guardian technique content; because not affecting the realization of specific implementation process of the present invention and goal of the invention, therefore do not illustrate one by one in the description.
Claims (1)
1. a ultra low differential pressure LED flashlight, it comprises 2.7 ~ 6V DC power supply, ultra low differential pressure current stabilization circuit, light-emitting component LED2 ~ LED4 and cell operating status indicating circuit, it is characterized in that:
In described ultra low differential pressure current stabilization circuit, the model that ultra low differential pressure flow straightener IC1 selects is AMC7135, the power cathode VSS connection circuit ground GND of the positive source VDD connection circuit positive pole VCC of ultra low differential pressure flow straightener IC1, ultra low differential pressure flow straightener IC1;
Described light-emitting component LED2 ~ LED4 selects 3 highlighted white light-emitting diodes, the negative pole of the output termination bright white look LED 2 of the positive pole connection circuit positive pole VCC of the positive pole of highlighted white LED 2 and the positive pole of highlighted white LED 3 and highlighted white LED 4, ultra low differential pressure flow straightener IC1 and the negative pole of highlighted white LED 3 and the negative pole of highlighted white LED 4;
Described cell operating status indicating circuit is made up of resistance R1 and LED 1, and the positive pole of LED 1 passes through resistance R1 connection circuit positive pole VCC, the negative pole connection circuit ground GND of LED 1;
The positive pole of described 2.7 ~ 6V DC power supply is by mains switch SW connection circuit positive pole VCC, and the negative pole of 2.7 ~ 6V DC power supply is connected with circuit ground GND, and 2.7 ~ 6V DC power supply can use the lithium battery that a joint capacity is more than 1000mAH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510650085.2A CN105120586A (en) | 2015-10-08 | 2015-10-08 | Ultralow-dropout LED flashlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510650085.2A CN105120586A (en) | 2015-10-08 | 2015-10-08 | Ultralow-dropout LED flashlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105120586A true CN105120586A (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510650085.2A Pending CN105120586A (en) | 2015-10-08 | 2015-10-08 | Ultralow-dropout LED flashlight |
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| Country | Link |
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| CN (1) | CN105120586A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107105552A (en) * | 2017-06-30 | 2017-08-29 | 湖州升谱电子科技有限公司 | A kind of adjustable constant current driver circuit for LED of output current |
| CN107135580A (en) * | 2017-06-30 | 2017-09-05 | 湖州升谱电子科技有限公司 | A kind of ultra low differential pressure LED current stabilization circuits |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202815648U (en) * | 2012-09-21 | 2013-03-20 | 翁玉琴 | Ultra low voltage difference linear voltage-stabilized power supply |
| WO2013189092A1 (en) * | 2012-06-21 | 2013-12-27 | 深圳市华星光电技术有限公司 | Led backlight drive circuit, liquid crystal display device, and manufacturing method of led backlight drive circuit |
| CN203397252U (en) * | 2013-09-02 | 2014-01-15 | 黄月华 | High-performance linear low-dropout voltage stabilizing circuit |
| CN203761662U (en) * | 2014-04-02 | 2014-08-06 | 苏州东山精密制造股份有限公司 | LED lamp drive circuit |
| CN203982378U (en) * | 2014-06-19 | 2014-12-03 | 商松 | A kind of LED matrix |
| CN204316776U (en) * | 2015-01-07 | 2015-05-06 | 黄月华 | With two joint rechargeable battery energy-saving LED flashlights |
| CN204482103U (en) * | 2015-03-26 | 2015-07-15 | 李哲 | A kind of low voltage difference LED drive circuit |
-
2015
- 2015-10-08 CN CN201510650085.2A patent/CN105120586A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013189092A1 (en) * | 2012-06-21 | 2013-12-27 | 深圳市华星光电技术有限公司 | Led backlight drive circuit, liquid crystal display device, and manufacturing method of led backlight drive circuit |
| CN202815648U (en) * | 2012-09-21 | 2013-03-20 | 翁玉琴 | Ultra low voltage difference linear voltage-stabilized power supply |
| CN203397252U (en) * | 2013-09-02 | 2014-01-15 | 黄月华 | High-performance linear low-dropout voltage stabilizing circuit |
| CN203761662U (en) * | 2014-04-02 | 2014-08-06 | 苏州东山精密制造股份有限公司 | LED lamp drive circuit |
| CN203982378U (en) * | 2014-06-19 | 2014-12-03 | 商松 | A kind of LED matrix |
| CN204316776U (en) * | 2015-01-07 | 2015-05-06 | 黄月华 | With two joint rechargeable battery energy-saving LED flashlights |
| CN204482103U (en) * | 2015-03-26 | 2015-07-15 | 李哲 | A kind of low voltage difference LED drive circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107105552A (en) * | 2017-06-30 | 2017-08-29 | 湖州升谱电子科技有限公司 | A kind of adjustable constant current driver circuit for LED of output current |
| CN107135580A (en) * | 2017-06-30 | 2017-09-05 | 湖州升谱电子科技有限公司 | A kind of ultra low differential pressure LED current stabilization circuits |
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Application publication date: 20151202 |
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| WD01 | Invention patent application deemed withdrawn after publication |