CN213152435U - Wide removal lighting circuit of application scope - Google Patents
Wide removal lighting circuit of application scope Download PDFInfo
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- CN213152435U CN213152435U CN202022309019.8U CN202022309019U CN213152435U CN 213152435 U CN213152435 U CN 213152435U CN 202022309019 U CN202022309019 U CN 202022309019U CN 213152435 U CN213152435 U CN 213152435U
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- 230000005611 electricity Effects 0.000 claims abstract 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 208000031361 Hiccup Diseases 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
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Abstract
The utility model discloses a wide removal lighting circuit of application scope, drive circuit still correspond the electricity with resistance R1 and be connected, resistance R1 corresponds the electricity with MOS pipe Q1 and is connected, MOS pipe Q1 corresponds the electricity with triode Q3's c utmost point and is connected, MOS pipe Q1 still corresponds ground connection, triode Q3's b utmost point corresponds the electricity with triode Q2's b utmost point and is connected, triode Q2's c utmost point corresponds the electricity with resistance R3 and is connected, triode Q2's e utmost point corresponds the electricity in resistance R5 and resistance R6 respectively and is connected; the c pole of the triode Q3 is also correspondingly and electrically connected with a resistor R4, the resistor R5 is correspondingly and electrically connected with the reference pole of a controllable precise voltage-stabilizing source U1, and the cathode of the controllable precise voltage-stabilizing source U1 is correspondingly and electrically connected with a resistor R2. When the energy of the battery is insufficient, the LED can be in a flash-off state, and the phenomenon that the product quality is abnormal is felt by people. The utility model relates to a wide removal lighting circuit of application scope has perfectly solved this problem.
Description
Technical Field
The utility model belongs to the technical field of the mobile lighting circuit and specifically relates to a wide mobile lighting circuit of application scope.
Background
The voltage of a common nickel-hydrogen or alkaline battery is lower than 2V, while the voltage of a light source Vf is about 3V, and a booster circuit is needed to drive the light source to achieve the illumination effect. At present, a mobile lighting circuit generally uses a switch SW to control the on and off of the positive electrode or the negative electrode of a battery, and then drives an LED light source through a boost driving circuit to achieve the lighting effect. The prior art has the following defects: when the battery voltage is pulled to be lower than the working voltage of the driving IC, the driving IC cannot work, and the LED light source is turned off; after the LED light source is turned off, due to the characteristics of the battery, the voltage of the battery can rise to reach the turn-on voltage Von of the drive IC and then the LED light source is continuously driven, after the LED light source is lightened, the battery is pulled to be lower than the working voltage of the drive IC, the LED light source is turned off, and the LED is repeatedly turned on and off to see a flash (hiccup), so that the product quality is influenced. Therefore, it is necessary to design a mobile lighting circuit with a wide application range.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, a mobile lighting circuit with a wide application range is provided.
The utility model discloses a following scheme realizes:
a movable lighting circuit with wide application range comprises a driving circuit which is correspondingly and electrically connected with a battery, the driving circuit is correspondingly connected with an LED, the driving circuit is also correspondingly and electrically connected with a resistor R1, the resistor R1 is correspondingly and electrically connected with an MOS tube Q1, the MOS tube Q1 is correspondingly and electrically connected with a c electrode of a triode Q3, the MOS tube Q1 is also correspondingly grounded, a b electrode of the triode Q3 is correspondingly and electrically connected with a b electrode of a triode Q2, a c electrode of the triode Q2 is correspondingly and electrically connected with a resistor R3, an e electrode of the triode Q2 is correspondingly and electrically connected with a resistor R5 and a resistor R6 respectively, and an e electrode of the triode Q3 is correspondingly and electrically connected with a battery anode BAT +;
the c pole of the triode Q3 is also correspondingly and electrically connected with a resistor R4, the resistor R5 is correspondingly and electrically connected with the reference pole of a controllable precision voltage-stabilizing source U1, the anode of the controllable precision voltage-stabilizing source U1 is correspondingly and electrically connected with a resistor R6, and the cathode of the controllable precision voltage-stabilizing source U1 is correspondingly and electrically connected with a resistor R2; the resistor R2, the resistor R3 and the resistor R4 are respectively and correspondingly electrically connected with the regulated voltage output end Vout, and conducting wires are arranged between the b pole of the triode Q3 and the b pole of the triode Q2 and between the c pole of the triode Q2 and the resistor R3 correspondingly.
The resistor R3 and the resistor R4 are both 100 k.
The resistance R2 is 470R and the resistance R1 is 50 mR.
The regulated voltage output terminal Vout provides a reference voltage of 2.5V.
The performance parameters of the transistor Q2 and the transistor Q3 are the same.
The utility model has the advantages that:
when the batteries (such as nickel-hydrogen batteries, alkaline batteries and lithium iron batteries) selected by the conventional mobile lighting circuit provide energy for driving the LEDs, the LEDs can be in a flash-off state when the energy of the batteries is insufficient, and the phenomenon that the quality of products is abnormal is felt by people. The utility model relates to a wide removal lighting circuit of application scope has perfectly solved this problem.
Drawings
Fig. 1 is a circuit diagram of a mobile lighting circuit with a wide application range of the present invention;
Detailed Description
The preferred embodiments of the present invention will be further described with reference to the accompanying drawings in which:
a mobile lighting circuit with wide application range comprises a driving circuit which is correspondingly and electrically connected with a battery, wherein the specific circuit connection relation, working process and principle of the driving circuit and a driving IC thereof are known in the prior art, and are not described in detail herein, the upper part of the attached drawing 1 of the application is one of the existing driving circuits, and the description thereof is not provided in this embodiment. In this embodiment, the driving circuit is correspondingly connected to the LED, the driving circuit is further correspondingly electrically connected to a resistor R1, the resistor R1 is correspondingly electrically connected to a MOS transistor Q1, the MOS transistor Q1 is correspondingly electrically connected to a c-pole of a transistor Q3, the MOS transistor Q1 is further correspondingly grounded, a b-pole of the transistor Q3 is correspondingly electrically connected to a b-pole of the transistor Q2, a c-pole of the transistor Q2 is correspondingly electrically connected to a resistor R3, e-poles of the transistor Q2 are respectively and electrically connected to a resistor R5 and a resistor R6, and an e-pole of the transistor Q3 is correspondingly electrically connected to a battery positive electrode BAT +;
the c pole of the triode Q3 is also correspondingly and electrically connected with a resistor R4, the resistor R5 is correspondingly and electrically connected with the reference pole of a controllable precision voltage-stabilizing source U1, the anode of the controllable precision voltage-stabilizing source U1 is correspondingly and electrically connected with a resistor R6, and the cathode of the controllable precision voltage-stabilizing source U1 is correspondingly and electrically connected with a resistor R2; the resistor R2, the resistor R3 and the resistor R4 are respectively and correspondingly electrically connected with the regulated voltage output end Vout, and conducting wires are arranged between the b pole of the triode Q3 and the b pole of the triode Q2 and between the c pole of the triode Q2 and the resistor R3 correspondingly.
The resistor R3 and the resistor R4 are both 100 k. The resistance R2 is 470R and the resistance R1 is 50 mR. The regulated voltage output terminal Vout provides a reference voltage of 2.5V. The performance parameters of the transistor Q2 and the transistor Q3 are the same.
The working principle and the process of the application are briefly described as follows: in this embodiment, the transistor Q2 and the transistor Q3 are NPN transistors having the same performance parameter, the controllable precision voltage regulator U1 is of the type TL431, and the regulated voltage output terminal Vout provides a reference voltage of 2.5V to the controllable precision voltage regulator U1. The reference voltage of 2.5V is divided by the resistor R5 and the resistor R6 to obtain a voltage Vqe, which is connected to the e-pole of the transistor Q2. The e pole of the other transistor Q3 is connected to the battery positive electrode BAT +, because the b poles of the two transistors Q2, Q3 with the same performance are connected together, and their voltages Vq, Vqe are fixed, the battery positive electrode voltage VBAT + decreases as the battery charge decreases.
When the driving circuit is operated, the current flowing through the LED is Iled ═ Vfb/(R1+ Rmoson), where Vfb (voltage of the LED) and R1 (resistance value of the resistor R1) are fixed, and Iled (current value flowing through the LED) becomes smaller as Rmoson (resistance value of the MOS transistor Q1) becomes larger. The current and the voltage of the conducting wires between the b electrode of the triode Q3 and the b electrode of the triode Q2 and between the c electrode of the triode Q2 and the resistor R3 are Iq and Vq respectively.
When the battery voltage VBAT + > Vqe, the current of Iq flows to the b pole and the e pole of the transistor Q2, at this time, the transistor Q3 is in the off state, the c-pole voltage of the transistor Q3 is approximately equal to Vout, the G-pole voltage of the MOS transistor Q1 is approximately equal to Vout, the MOS transistor Q1 is completely in the on state, and Rmoson is the on value.
When the battery voltage VBAT + is less than or equal to Vqe, the Iq current flows to the b pole and the e pole of the transistor Q3, the transistor Q3 is in a conducting state, the voltage of the c pole of the transistor Q3 is approximately equal to the battery voltage VBAT + VQ3ce, the G pole voltage of the MOS transistor Q1 is VBAT + VQ3ce, the MOS transistor Q1 is in an amplifying state, the lower the VBAT + voltage is, the larger the Rmoson of the transistor Q1 is, the smaller the Iled voltage is, the battery voltage VBAT + is not pulled down by high power load, and the lower the battery voltage VBAT + is, so that the phenomenon of flash (hiccup) of the LED is avoided. When VBAT + is small to a certain degree, the MOS transistor Q1 will be completely turned off, and the LED will not light, so that a flash (hiccup) of the LED is avoided.
This application provides behind 2.5V's reference voltage through the controllable accurate steady voltage source U1 of TL431, and the voltage of the various battery electroless state of rethread two divider resistance settings adaptation sets up various battery voltage points in a flexible way. The current limiting purpose is achieved without detecting the battery voltage by a single chip microcomputer, and the cost is saved. The specific circuit connection relationship, operation process and principle of the TL431 controllable precision voltage regulator U1 are well known in the art and will not be described herein.
Although the invention has been shown and described in detail with respect to the preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a wide removal lighting circuit of application scope, includes the drive circuit who corresponds the electricity with the battery and be connected, drive circuit corresponds with LED and is connected its characterized in that: the driving circuit is also correspondingly electrically connected with a resistor R1, the resistor R1 is correspondingly electrically connected with an MOS tube Q1, the MOS tube Q1 is correspondingly electrically connected with a c electrode of a triode Q3, the MOS tube Q1 is also correspondingly grounded, a b electrode of the triode Q3 is correspondingly electrically connected with a b electrode of a triode Q2, a c electrode of the triode Q2 is correspondingly electrically connected with a resistor R3, an e electrode of the triode Q2 is correspondingly electrically connected with a resistor R5 and a resistor R6 respectively, and an e electrode of the triode Q3 is correspondingly electrically connected with a battery anode BAT +;
the c pole of the triode Q3 is also correspondingly and electrically connected with a resistor R4, the resistor R5 is correspondingly and electrically connected with the reference pole of a controllable precision voltage-stabilizing source U1, the anode of the controllable precision voltage-stabilizing source U1 is correspondingly and electrically connected with a resistor R6, and the cathode of the controllable precision voltage-stabilizing source U1 is correspondingly and electrically connected with a resistor R2; the resistor R2, the resistor R3 and the resistor R4 are respectively and correspondingly electrically connected with the regulated voltage output end Vout, and conducting wires are arranged between the b pole of the triode Q3 and the b pole of the triode Q2 and between the c pole of the triode Q2 and the resistor R3 correspondingly.
2. A wide range of mobile lighting circuits as defined in claim 1, wherein: the resistor R3 and the resistor R4 are both 100 k.
3. A wide range of mobile lighting circuits as defined in claim 1, wherein: the resistance R2 is 470R and the resistance R1 is 50 mR.
4. A wide range of mobile lighting circuits as defined in claim 1, wherein: the regulated voltage output terminal Vout provides a reference voltage of 2.5V.
5. A wide range of mobile lighting circuits as defined in claim 1, wherein: the performance parameters of the transistor Q2 and the transistor Q3 are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022309019.8U CN213152435U (en) | 2020-10-16 | 2020-10-16 | Wide removal lighting circuit of application scope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022309019.8U CN213152435U (en) | 2020-10-16 | 2020-10-16 | Wide removal lighting circuit of application scope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213152435U true CN213152435U (en) | 2021-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022309019.8U Active CN213152435U (en) | 2020-10-16 | 2020-10-16 | Wide removal lighting circuit of application scope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213152435U (en) |
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2020
- 2020-10-16 CN CN202022309019.8U patent/CN213152435U/en active Active
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Address after: Building 2, Cuiheng International Science and Technology Innovation Center, No. 21 Beichen Road, Cuiheng New District, Zhongshan City, Guangdong Province, 528400, 604 Patentee after: Aolei Technology Group Co.,Ltd. Country or region after: China Address before: Room 527, Unit 1, Building 2, Qian'an Garden, No. 18 Cuicheng Road, Cuiheng New District, Nanlang Street, Zhongshan City, Guangdong Province, 528400 Patentee before: Zhongshan Aolei Technology Co.,Ltd. Country or region before: China Address after: Room 527, Unit 1, Building 2, Qian'an Garden, No. 18 Cuicheng Road, Cuiheng New District, Nanlang Street, Zhongshan City, Guangdong Province, 528400 Patentee after: Zhongshan Aolei Technology Co.,Ltd. Country or region after: China Address before: 518000 A2 fifth floor, Fuhai information port, Qiaotou community, Fuhai street, Shenzhen, Guangdong, Baoan District Patentee before: Shenzhen Olight E-Commerce Technology Co.,Ltd. Country or region before: China |