CN218679442U - Series connection LED open circuit protection circuit - Google Patents
Series connection LED open circuit protection circuit Download PDFInfo
- Publication number
- CN218679442U CN218679442U CN202221515925.6U CN202221515925U CN218679442U CN 218679442 U CN218679442 U CN 218679442U CN 202221515925 U CN202221515925 U CN 202221515925U CN 218679442 U CN218679442 U CN 218679442U
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- China
- Prior art keywords
- led lamp
- lamp pearl
- circuit
- type triode
- npn type
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The utility model discloses a series connection LED protection circuit that opens circuit, including a plurality of LED lamp pearls of establishing ties, every LED lamp pearl correspondence is equipped with an electronic switch unit, electronic switch unit includes NPN type triode Q, resistance R1 and resistance R2, NPN type triode Q's collecting electrode and corresponding the anodal of LED lamp pearl is connected, and resistance R1 establishes ties in NPN type triode Q's base and corresponding between the positive pole of LED lamp pearl, resistance R2 establishes ties in NPN type triode Q's projecting pole and corresponding between the negative pole of LED lamp pearl. The utility model discloses series connection LED protection circuit that opens circuit, arbitrary certain when LED lamp pearl damages, it is corresponding the electronic switch unit switches on immediately and forms closed loop, other damage in the circuit LED lamp pearl can not be because of certain LED lamp pearl damages the disconnection and can't get electric, still can keep normal use.
Description
Technical Field
The utility model relates to an electronic circuit technical field especially relates to a series connection LED protection circuit that opens circuit.
Background
As a novel energy-saving lighting device, the LED is low in energy consumption, small in size, not easy to damage and the like compared with other lamps such as incandescent lamps, and is widely applied. In the installation of current LED, for reaching better illuminating effect, can establish ties a plurality of LED lamp pearl and use together usually, LED lamp pearl is established ties the back, and illumination luminance is big, nevertheless under the serial structure, when certain LED lamp pearl appears damaging or the trouble causes the circuit break, all establish ties LED lamp pearls on the return circuit can not lighted, and this just causes great cost waste, and the LED lamp pearl that just establishes ties together is more, or LED lamp pearl power is big more, then the loss is big more.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a series connection LED open circuit protection circuit.
Realize the utility model discloses the technical scheme of purpose is: the series LED circuit-breaking protection circuit comprises a plurality of LED lamp beads which are connected in series, each LED lamp bead is correspondingly provided with an electronic switch unit, each electronic switch unit comprises an NPN type triode Q, a resistor R1 and a resistor R2, a collector of the NPN type triode Q is connected with the positive electrode of the corresponding LED lamp bead, the resistor R1 is connected between the base of the NPN type triode Q and the positive electrode of the corresponding LED lamp bead in series, and the resistor R2 is connected between an emitting electrode of the NPN type triode Q and the negative electrode of the corresponding LED lamp bead in series.
Further, the resistance value of the resistor R1 is 1K omega; the resistance of the resistor R2 is 100 Ω.
The utility model discloses establish ties LED open circuit protection circuit, through every LED lamp pearl corresponds and sets up one the electronic switch unit makes arbitrary certain when LED lamp pearl damages, it is corresponding the electronic switch unit switches on at once and forms closed loop circuit, other in the circuit do not damage LED lamp pearl can not be because of certain LED lamp pearl damages the disconnection and can't get electric, other do not damage in the circuit LED lamp pearl still can keep normal use. The utility model discloses series connection LED open circuit protection circuit can improve the series connection greatly the utilization ratio of LED lamp pearl, the extension is established ties the life of LED lamp pearl reduces the cost of whole change or maintenance, and simultaneously, circuit work is also more stable, can not be because of a certain LED lamp pearl damages the disconnection, and the condition that whole lamp goes out appears suddenly.
Drawings
Fig. 1 is a schematic structural diagram of the series LED open circuit protection circuit of the present invention.
Detailed Description
The following describes in detail a preferred embodiment of the series LED open-circuit protection circuit according to the present invention with reference to the accompanying drawings:
as shown in fig. 1, the series LED open-circuit protection circuit includes a plurality of LED lamp beads 1 connected in series, each LED lamp bead 1 is correspondingly provided with an electronic switch unit 2, the electronic switch unit 2 includes an NPN-type triode Q, a resistor R1 and a resistor R2, a collector of the NPN-type triode Q is connected to a positive electrode of the corresponding LED lamp bead 1, the resistor R1 is connected in series between a base of the NPN-type triode Q and a positive electrode of the corresponding LED lamp bead 1, and the resistor R2 is connected in series between an emitter of the NPN-type triode Q and a negative electrode of the corresponding LED lamp bead 1.
The utility model discloses series connection LED open circuit protection circuit, when all LED lamp pearl 1 of series connection is not damaged, all LED lamp pearl 1 all has the electric current to flow through, can normally light the use; when any LED lamp bead 1 is damaged and disconnected, the current in the circuit flows to the base electrode of the NPN type triode Q in the corresponding electronic switch unit 2, the corresponding NPN type triode Q of the electronic switch unit 2 is conducted, the circuit can still form a closed loop after the electric signal passes through the resistor R2, and other LED lamp beads 1 which are not damaged in the circuit can still work normally.
The utility model discloses establish ties LED open circuit protection circuit, through every LED lamp pearl 1 corresponds and sets up one electronic switch unit 2 makes arbitrary certain when LED lamp pearl 1 damages, it is corresponding electronic switch unit 2 switches on at once and forms closed loop circuit, other do not damage in the circuit LED lamp pearl 1 can not be because of a certain LED lamp pearl 1 damages the disconnection and can't get electric, other do not damage in the circuit LED lamp pearl 1 still can keep normal use. The utility model discloses series connection LED protection circuit that opens a way can improve the series connection greatly LED lamp pearl 1's utilization ratio, the extension is established ties LED lamp pearl 1's life reduces the cost of overall change or maintenance, and simultaneously, circuit work is also more stable, can not be because of a certain LED lamp pearl 1 damages the disconnection, and the condition that whole lamp goes out appears suddenly.
The utility model discloses series connection LED open circuit protection circuit, the resistance value of resistance R1 can but not only be 1K omega; the resistance of the resistor R2 may be, but is not limited to, 100 Ω.
The utility model discloses right the utility model discloses the ordinary skilled person in technical field does not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (2)
1. The utility model provides a series connection LED protection circuit that opens circuit, includes a plurality of LED lamp pearls of series connection, its characterized in that: each LED lamp bead is correspondingly provided with an electronic switch unit, each electronic switch unit comprises an NPN type triode Q, a resistor R1 and a resistor R2, a collector electrode of the NPN type triode Q is connected with the anode of the corresponding LED lamp bead, the resistor R1 is connected between the base electrode of the NPN type triode Q and the anode of the corresponding LED lamp bead in series, and the resistor R2 is connected between the emitting electrode of the NPN type triode Q and the cathode of the corresponding LED lamp bead in series.
2. The series LED open circuit protection circuit of claim 1, wherein: the resistance value of the resistor R1 is 1K omega; the resistance of the resistor R2 is 100 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221515925.6U CN218679442U (en) | 2022-06-17 | 2022-06-17 | Series connection LED open circuit protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221515925.6U CN218679442U (en) | 2022-06-17 | 2022-06-17 | Series connection LED open circuit protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218679442U true CN218679442U (en) | 2023-03-21 |
Family
ID=85533676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221515925.6U Active CN218679442U (en) | 2022-06-17 | 2022-06-17 | Series connection LED open circuit protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218679442U (en) |
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2022
- 2022-06-17 CN CN202221515925.6U patent/CN218679442U/en active Active
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