CN205265952U - LED protection circuit - Google Patents
LED protection circuit Download PDFInfo
- Publication number
- CN205265952U CN205265952U CN201521066335.XU CN201521066335U CN205265952U CN 205265952 U CN205265952 U CN 205265952U CN 201521066335 U CN201521066335 U CN 201521066335U CN 205265952 U CN205265952 U CN 205265952U
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- China
- Prior art keywords
- led
- electric capacity
- inductance
- circuit board
- pin
- Prior art date
- 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.)
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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 LED protection circuit, including first electric capacity C1 and second electric capacity C2, LED+ end and LED - hold 2 feet and 3 feet that meet inductance L respectively on the aluminium base circuit board, have met third electric capacity C3 between inductance L's 1 foot and 4 feet, on the aluminium base circuit board LED+ hold and inductance L's 4 feet between concatenated first electric capacity C1 and second electric capacity C2. The utility model provides a protecting the not impaired problem of LED chip on the aluminium base circuit board during high -voltage insulation test, providing a simple high -voltage insulation test protection circuit, integrated circuit is in the LED AC drive device in this protection.
Description
Technical field
The utility model relates to LED technical field, be specifically related to a kind of LED holding circuit.
Background technology
High-powered LED lamp all adopts aluminum-based circuit board as heat radiation substrate at present, and aluminium sheet heat radiationBody all directly contacts with shell. Because aluminium substrate has excellent conductive performance, cause LED coreBetween plate electrode pin and aluminium body, dielectric voltage withstand generally can only be accomplished DC500V left and right, but LEDLight fixture is in the time of production test, and I class light fixture and II class light fixture input line are respectively shell voltage-withstand test1500VAC and 3750VAC, so, in the time of voltage-withstand test, there is the possibility of damaging LED chip, andAnd in use procedure, there is certain risk.
Utility model content
For the deficiency existing in prior art, the utility model object is to be to provide a kind of LED protection electricityRoad, protects the not impaired problem of LED chip in aluminum-based circuit board while solving voltage-withstand test.
To achieve these goals, the utility model is to realize by the following technical solutions: LED protectionCircuit, comprises the first capacitor C 1 and the second capacitor C 2, and in aluminum-based circuit board, LED+ end and LED-end are respectivelyConnect 2 pin and 3 pin of inductance L, between 1 pin of inductance L and 4 pin, be connected to the 3rd capacitor C 3, aluminium base lineBetween road onboard led+end and 4 pin of inductance L, be serially connected with the first capacitor C 1 and the second capacitor C 2.
As preferably, the 3rd described capacitor C 3 is the electric capacity with polarity.
When solving voltage-withstand test, the utility model protects not impaired the asking of LED chip in aluminum-based circuit boardTopic, provides a kind of simple voltage-withstand test holding circuit, and this holding circuit is integrated in LED AC drive apparatusIn.
Brief description of the drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is circuit diagram of the present utility model.
Detailed description of the invention
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understandSeparate, below in conjunction with detailed description of the invention, further set forth the utility model.
With reference to Fig. 1, this detailed description of the invention by the following technical solutions: LED holding circuit, comprises firstCapacitor C 1 and the second capacitor C 2, in aluminum-based circuit board, LED+ end and LED-end connect respectively 2 pin of inductance LWith 3 pin, between 1 pin of inductance L and 4 pin, be connected to the 3rd capacitor C 3, in aluminum-based circuit board LED+ end withBetween 4 pin of inductance L, be serially connected with the first capacitor C 1 and the second capacitor C 2.
It should be noted that the 3rd described capacitor C 3 is the electric capacity with polarity.
This detailed description of the invention is that LED+, LED-are respectively to shell at the output of LED AC drive apparatus() connect the electric capacity of 1 222M/250V. Test input line to shell () when withstand voltage, due toThe existence of leakage current, causes forming one between the electrode part of LED+ in aluminum-based circuit board, LED-and aluminium sheetFixed voltage, by the first capacitor C 1 in figure and the second capacitor C 2, makes between LED+, LED-and aluminium sheetForm and exchange bleed-off circuit, so just the LED in aluminum-based circuit board has been played to protective effect.
When solving voltage-withstand test, this detailed description of the invention protect the LED chip in aluminum-based circuit board not damagedProblem, a kind of simple voltage-withstand test holding circuit is provided, this holding circuit is integrated in LED and exchanges and driveIn device.
The above is only preferred embodiment of the present utility model, it should be pointed out that for the artThose of ordinary skill, not departing under the prerequisite of the utility model principle, can also make some improvementAnd retouching, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
1.LED holding circuit, is characterized in that, comprises the first electric capacity (C1) and the second electric capacity (C2), aluminiumOn base circuit board, LED+ end and LED-end connect respectively 2 pin and 3 pin of inductance (L), 1 pin of inductance (L) withBetween 4 pin, be connected to the 3rd electric capacity (C3), in aluminum-based circuit board, between LED+ end and 4 pin of inductance (L), be connected in seriesThere are the first electric capacity (C1) and the second electric capacity (C2).
2. LED holding circuit according to claim 1, is characterized in that, the 3rd described electric capacity (C3)For the electric capacity with polarity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521066335.XU CN205265952U (en) | 2015-12-18 | 2015-12-18 | LED protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521066335.XU CN205265952U (en) | 2015-12-18 | 2015-12-18 | LED protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205265952U true CN205265952U (en) | 2016-05-25 |
Family
ID=56007450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521066335.XU Active CN205265952U (en) | 2015-12-18 | 2015-12-18 | LED protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205265952U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019120246A1 (en) * | 2017-12-20 | 2019-06-27 | 欧普照明股份有限公司 | Light source substrate assembly, light source module, and illumination device |
-
2015
- 2015-12-18 CN CN201521066335.XU patent/CN205265952U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019120246A1 (en) * | 2017-12-20 | 2019-06-27 | 欧普照明股份有限公司 | Light source substrate assembly, light source module, and illumination device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |