CN204795757U - LED lamp drive protection circuit - Google Patents
LED lamp drive protection circuit Download PDFInfo
- Publication number
- CN204795757U CN204795757U CN201520479832.6U CN201520479832U CN204795757U CN 204795757 U CN204795757 U CN 204795757U CN 201520479832 U CN201520479832 U CN 201520479832U CN 204795757 U CN204795757 U CN 204795757U
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- China
- Prior art keywords
- led lamp
- led
- resistance
- model
- utility
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000011324 bead Substances 0.000 claims description 18
- 239000003381 stabilizer Substances 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000004880 explosion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000011049 pearl Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a LED lamp drive protection circuit, include resistance -capacitance filter circuit, rectifier bridge and the LED lamp cluster connected in order from the electric main, LED lamp cluster comprises a plurality of LED lamp pearl series connection and every LED lamp pearl is all connected in parallel has a resistance, and LED lamp cluster divide into a plurality of banks, and every banks includes the LED lamp pearl of two at least series connection, and the banks connects in parallel has a stabilivolt. The utility model discloses a parallelly connected stabilivolt respectively on banks that establish ties to constitute LED lamp cluster, when wherein certain or a plurality of LED lamp pearl damage, when perhaps resistance also burns out, can the reverse breakdown stabilivolt, the stabilivolt switches on, not have the LED lamp that damages still can normally work in the LED lamp cluster, and then the extension adoption the utility model discloses a life of drive circuit's LED lamp can also prevent the electrolytic capacitor explosion, avoids the user to cause the frighten.
Description
Technical field
The utility model relates to a kind of drive circuit, particularly a kind of drive circuit of LED.
Background technology
As everyone knows, LED is due to its long service life, energy-conservation and be subject to the favor of people.In order to make LED can have enough illumination brightness and long-life, some LED are had to be that multiple LED lamp bead is connected into a LED string at present.If wherein certain or several LED lamp bead pearls damage, then whole LED string can be caused to open a way, and then LED cannot normally be worked.
In view of above-mentioned technical problem, present industry is had people and is improved by the resistance relatively large to the resistance in parallel of each LED on lamp string, during normal work, this shunt resistance is very little, do not affect the brightness of LED, and when LED lamp bead breaks down, conducting can be carried out again by resistance, thus preferably resolve the problems referred to above, but, if its resistance in parallel is also burnt when LED breaks down, lamp string can be opened a way equally, causes LED normally to work, and electrochemical capacitor can be made to explode, and scaring is to user.
Utility model content
In order to solve the problem, the purpose of this utility model is to provide a kind of structure simple and the LED lamp drive circuit of low cost.
The utility model is the technical scheme that its technical problem of solution adopts:
A kind of LED Drive Protecting Circuit; comprise the rc filter circuit, rectifier bridge and the LED string that connect in turn from electric main; described LED string by several LED lamp bead be connected in series to form and each LED lamp bead is all parallel with a resistance; LED string is divided into some lamp groups; each lamp group comprises the LED lamp bead of at least two series connection, and described lamp group is parallel with a voltage-stabiliser tube.
As the improvement of technique scheme, described LED string is also connected with one and disappears ripple circuit.
As the further improvement of technique scheme, described in the ripple circuit that disappears be one to disappear ripple IC.
In the utility model, described in the ripple circuit in parallel that disappears have diode shunting drive circuit.
Preferably, described diode shunting drive circuit is made up of three Diode series connections.
Further, the Standard resistance range of described resistance is 22-1000 Ω.
Further again, the Standard resistance range of described resistance is 22-470 Ω
The beneficial effects of the utility model are: because the utility model is by the voltage-stabiliser tube in parallel of difference in the lamp group being composed in series LED string, when wherein certain or several LED lamp bead are damaged, or when resistance also burns out, can reverse breakdown voltage-stabiliser tube, voltage-stabiliser tube conducting, thus make whole LED string still can form a complete loop, the LED damaged is not had still can normally to work in LED string, and then extend the useful life of the LED adopting drive circuit of the present utility model, can also prevent electrochemical capacitor from exploding, user is avoided to cause scaring.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the circuit connection diagram of the utility model drive circuit.
Embodiment
With reference to Fig. 1; a kind of LED Drive Protecting Circuit; comprise the rc filter circuit (R1, R2, C1, C2 form), rectifier bridge BRIDGE1 and the LED string that connect in turn from electric main; and the electrochemical capacitor C3 to be connected with rectification bridge output end; described LED string by 12 LED lamp bead (D1 ~ D12) be connected in series to form and each LED lamp bead is all parallel with a resistance (R3 ~ R14); described LED string is divided into some lamp groups; each lamp group comprises the LED lamp bead of at least two series connection, and described lamp group is parallel with a voltage-stabiliser tube Dz.
The operation principle of the technical program is, when wherein certain or several LED lamp bead are damaged, string conducting is ensured by resistance R, when resistance also burns out, can reverse breakdown voltage-stabiliser tube Dz, voltage-stabiliser tube conducting, thus make whole LED string still can form a complete loop, the LED damaged is not had still can normally to work in LED string, and then extend the useful life of the LED adopting drive circuit of the present utility model, can also prevent electrochemical capacitor from exploding, avoid user to cause scaring.
In the utility model, the quantity of LED string can one group, two groups, three groups or many groups, and the group number of this LED string is specifically decided according to the actual requirements and is not defined as one group; And the LED lamp bead number that lamp group is connected is 2 or 3 (as figure), or manyly also can.
In order to reduce the electric current, the reduction power consumption that flow through resistance, in the utility model, preferably, the Standard resistance range of described resistance is 22-1000 Ω, because the voltage putting on LED lamp bead two ends can not be too high, therefore also bear identical voltage with the resistance of LED lamp bead parallel connection, and then make the electric current flowing through resistance relatively very little, and then the electric energy loss that minimizing resistance causes; Further preferably, the Standard resistance range of described resistance is 22-470 Ω.
Further, in order to make to adopt the LED of drive circuit of the present utility model to there will not be stroboscopic, described LED string is also connected with one and disappears ripple circuit, as preferred embodiment of the present utility model, the described ripple circuit that disappears is that the ripple IC(that disappears comprises mos pipe Q1, electric capacity C4, resistance R15, resistance R16), preferably model is the ripple IC that disappears of SM208ND further.
Further again, in order to make to disappear ripple IC in the case of damages above-mentioned, drive circuit of the present utility model still can normally work, preferably, the described ripple circuit in parallel that disappears has a diode shunting drive circuit, here, as preferred embodiment of the present utility model, described diode shunting drive circuit is connected in series by three diodes (DIODED1 ~ D3) and forms.Normal working voltage due to the ripple IC that disappears is 1-2V, and the diode of three series connection then can produce the pressure reduction of about 2.4V, and when the ripple IC that disappears is intact, disappear ripple IC normal ground loop works; When damaging at the ripple IC that disappears, electric current then can flow through diode shunting drive circuit, thus make LED lamp drive circuit of the present utility model form a complete loop, and then make LED lamp bead can normal power-up luminous, effectively extend the useful life of the LED adopting LED lamp drive circuit of the present utility model.
The foregoing is only preferred embodiments of the present utility model, as long as the technical scheme realizing the utility model object with basic same approach all belongs within protection range of the present utility model.
Claims (7)
1. a LED Drive Protecting Circuit; comprise the rc filter circuit, rectifier bridge and the LED string that connect in turn from electric main; described LED string by several LED lamp bead be connected in series to form and each LED lamp bead is all parallel with a resistance; it is characterized in that: described LED string is divided into some lamp groups; each lamp group comprises the LED lamp bead of at least two series connection, and described lamp group is parallel with a voltage-stabiliser tube.
2. a kind of LED Drive Protecting Circuit according to claim 1, is characterized in that: described LED string is also connected with one and disappears ripple circuit.
3. a kind of LED Drive Protecting Circuit according to claim 2, is characterized in that: described in the ripple circuit that disappears be one to disappear ripple IC.
4. a kind of LED Drive Protecting Circuit according to Claims 2 or 3, is characterized in that: described in the ripple circuit in parallel that disappears have diode shunting drive circuit.
5. a kind of LED Drive Protecting Circuit according to claim 4, is characterized in that: described diode shunting drive circuit is made up of three Diode series connections.
6. a kind of LED Drive Protecting Circuit according to claim 1, is characterized in that: the Standard resistance range of described resistance is 22-1000 Ω.
7. a kind of LED Drive Protecting Circuit according to claim 6, is characterized in that: the Standard resistance range of described resistance is 22-470 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479832.6U CN204795757U (en) | 2015-07-03 | 2015-07-03 | LED lamp drive protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479832.6U CN204795757U (en) | 2015-07-03 | 2015-07-03 | LED lamp drive protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204795757U true CN204795757U (en) | 2015-11-18 |
Family
ID=54535715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520479832.6U Expired - Fee Related CN204795757U (en) | 2015-07-03 | 2015-07-03 | LED lamp drive protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204795757U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230007750A1 (en) * | 2021-07-02 | 2023-01-05 | Semisilicon Technology Corp. | Parallel sequenced led light string |
-
2015
- 2015-07-03 CN CN201520479832.6U patent/CN204795757U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230007750A1 (en) * | 2021-07-02 | 2023-01-05 | Semisilicon Technology Corp. | Parallel sequenced led light string |
| US11950338B2 (en) * | 2021-07-02 | 2024-04-02 | Semisilicon Technology Corp. | Parallel sequenced LED light string |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151222 Address after: 528400, Guangdong, Zhongshan province National Fire high tech Industrial Development Zone, No. 8, Sha wing Patentee after: Zhongshan Addison Photoelectric Technology Co., Ltd. Address before: 528400, Guangdong, Zhongshan province National Fire high tech Industrial Development Zone, 8 sand wing, Zhongshan Di AI / Addison Photoelectric Technology Co., Ltd. Patentee before: Zhou Yulong |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20170703 |