CN204090197U - A kind of LED surge absorbing circuit - Google Patents
A kind of LED surge absorbing circuit Download PDFInfo
- Publication number
- CN204090197U CN204090197U CN201420401649.XU CN201420401649U CN204090197U CN 204090197 U CN204090197 U CN 204090197U CN 201420401649 U CN201420401649 U CN 201420401649U CN 204090197 U CN204090197 U CN 204090197U
- Authority
- CN
- China
- Prior art keywords
- surge
- electric capacity
- led
- circuit
- aluminium base
- 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.)
- Expired - Fee Related
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Classifications
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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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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a kind of LED surge absorbing circuit, comprise aluminium base power module, the parasitic capacitance C of positive terminal by being formed on aluminium base of described aluminium base power module
1be connected with the positive terminal of LED; The parasitic capacitance C of positive terminal by being formed on aluminium base of described LED
2be connected to the PE end of circuit, the parasitic capacitance C of negative pole end by being formed on aluminium base of described LED
3be connected to the PE end of circuit; Surge absoption electric capacity C is in series with between the positive terminal of described LED and the PE of circuit hold
4with surge absoption electric capacity C
5; Described surge absoption electric capacity C
4with surge absoption electric capacity C
5interior joint by piezo-resistance R
vbe connected to the PE end of circuit.Surge absorbing circuit of the present utility model can when abnormal transition surge situation occurs, and transition surge is effectively transferred in power drives; Effective guarantee light fixture product reliability in actual use and durability.
Description
Technical field
The utility model relates to a kind of LED surge absorbing circuit.
Background technology
At present, use LED as in the illuminating product of light source, most due to the restriction by space, allow product can bear surge in electrical network, thunderbolt (induced lightening) and electrical network instantaneous pressure impact and do not damage, all very difficult.Therefore most of company damages at company's production link in a large number in order to prevent product, surge and withstand voltage is not tested at production link, or derate is tested, this becomes fragile and uncertain in the face of complicated electromagnetic environment in all using for product is actual, risk is transferred to client, no matter make product all bury very high hidden danger like this between commercial activity, supply and demand both sides.
Fig. 1 is visible, when there being transient pulse surge to scurry into, aluminium base parasitic capacitance is about five one thousandths of power supply equivalent capacity, according to capacitances in series voltage divider principle, that is surge voltage almost all acts on LED two ends, as done 1500VAC voltage-withstand test by GB7000.1 light fixture, 1500Vac voltage almost all divides and is pressed on LED, and the forward and reverse pressure-bearing of single LED is between 3-5V, if directly allow so large voltage be added on LED two ends, the PN junction of diode will be made directly to damage or local damage.LED lamp that Here it is the basic reason that lamp pearl damages when voltage-withstand test.
Utility model content
The utility model object is that the defect existed for prior art provides a kind of LED surge absorbing circuit.
The utility model for achieving the above object, adopts following technical scheme: a kind of LED surge absorbing circuit, comprises aluminium base power module, the parasitic capacitance C of positive terminal by being formed on aluminium base of described aluminium base power module
1be connected with the positive terminal of LED; The parasitic capacitance C of positive terminal by being formed on aluminium base of described LED
2be connected to the PE end of circuit, the parasitic capacitance C of negative pole end by being formed on aluminium base of described LED
3be connected to the PE end of circuit; Surge absoption electric capacity C is in series with between the positive terminal of described LED and the PE of circuit hold
4with surge absoption electric capacity C
5; Described surge absoption electric capacity C
4with surge absoption electric capacity C
5interior joint by piezo-resistance R
vbe connected to the PE end of circuit.
Further, described parasitic capacitance C
1for the electric capacity of the pico farad order of magnitude.
Further, described parasitic capacitance C
2with parasitic capacitance C
3be the electric capacity of the sub-picofarad order of magnitude.
Further, described surge absoption electric capacity C
4with surge absoption electric capacity C
5be the electric capacity of the microfarad order of magnitude.
Further, the capacitance of described parasitic capacitance C1 is 5000pF.
Further, described surge absoption electric capacity C
4with surge absoption electric capacity C
5capacitance be 0.1 μ F.
The beneficial effects of the utility model: surge absorbing circuit of the present utility model can when abnormal transition surge situation occurs, and transition surge is effectively transferred in power drives; Surge absorbing circuit is introduced first on LED light source; Because power module itself has good withstand voltage and Anti-surging ability, therefore adequately protected light fixture the weakest withstand voltage LED, effective guarantee light fixture product reliability in actual use and durability.
Accompanying drawing explanation
Fig. 1 is traditional common mode surge transient state equivalent schematic.
Fig. 2 is the common mode surge transient state equivalent schematic after the utility model improves.
Embodiment
Shown in Fig. 2, relate to a kind of LED surge absorbing circuit, comprise aluminium base power module, the parasitic capacitance C of positive terminal by being formed on aluminium base of described aluminium base power module
1be connected with the positive terminal of LED; The parasitic capacitance C of positive terminal by being formed on aluminium base of described LED
2be connected to the PE end of circuit, the parasitic capacitance C of negative pole end by being formed on aluminium base of described LED
3be connected to the PE end of circuit; Surge absoption electric capacity C is in series with between the positive terminal of described LED and the PE of circuit hold
4with surge absoption electric capacity C
5; Described surge absoption electric capacity C
4with surge absoption electric capacity C
5interior joint by piezo-resistance R
vbe connected to the PE end of circuit.
Owing to introducing piezo-resistance Rv, surge absorbing circuit of the present utility model is not worked when normal working voltage, and when the surge exceeding this magnitude of voltage occurs, it cuts operating state wherein automatically.Due to parasitic capacitance C
1be generally the electric capacity of the pico farad order of magnitude, its capacitance is generally about 5000pF.And parasitic capacitance C
2with parasitic capacitance C
3usually be the electric capacity of the sub-picofarad order of magnitude, its capacitance with to walk wire shaped relevant, non-equivalent.By surge absoption electric capacity C in circuit of the present utility model
4with surge absoption electric capacity C
5all be arranged to the electric capacity of microfarad magnitude, its capacitance is generally 0.1 μ about F.Due to surge absoption electric capacity C
4with surge absoption electric capacity C
5all than parasitic capacitance C
1large about 200 times of electric capacity, according to capacitances in series voltage divider principle, surge voltage is almost all transferred in LED between power supply primary and secondary, because the aluminium base power module of LED itself meets the relevant criterion of LED Standalone Drives, this voltage transfer can not damage power supply.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (6)
1. a LED surge absorbing circuit, comprises aluminium base power module, the parasitic capacitance C of positive terminal by being formed on aluminium base of described aluminium base power module
1be connected with the positive terminal of LED; The parasitic capacitance C of positive terminal by being formed on aluminium base of described LED
2be connected to the PE end of circuit, the parasitic capacitance C of negative pole end by being formed on aluminium base of described LED
3be connected to the PE end of circuit; It is characterized in that, between the positive terminal of described LED and the PE of circuit hold, be in series with surge absoption electric capacity C
4with surge absoption electric capacity C
5; Described surge absoption electric capacity C
4with surge absoption electric capacity C
5interior joint by piezo-resistance R
vbe connected to the PE end of circuit.
2. a kind of LED surge absorbing circuit as claimed in claim 1, is characterized in that, described parasitic capacitance C
1for the electric capacity of the pico farad order of magnitude.
3. a kind of LED surge absorbing circuit as claimed in claim 1, is characterized in that, described parasitic capacitance C
2with parasitic capacitance C
3be the electric capacity of the sub-picofarad order of magnitude.
4. a kind of LED surge absorbing circuit as claimed in claim 1, is characterized in that, described surge absoption electric capacity C
4with surge absoption electric capacity C
5be the electric capacity of the microfarad order of magnitude.
5. a kind of LED surge absorbing circuit as claimed in claim 2, is characterized in that, described parasitic capacitance C
1capacitance be 5000pF.
6. a kind of LED surge absorbing circuit as claimed in claim 4, is characterized in that, described surge absoption electric capacity C
4with surge absoption electric capacity C
5capacitance be 0.1 μ F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420401649.XU CN204090197U (en) | 2014-07-18 | 2014-07-18 | A kind of LED surge absorbing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420401649.XU CN204090197U (en) | 2014-07-18 | 2014-07-18 | A kind of LED surge absorbing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204090197U true CN204090197U (en) | 2015-01-07 |
Family
ID=52182861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420401649.XU Expired - Fee Related CN204090197U (en) | 2014-07-18 | 2014-07-18 | A kind of LED surge absorbing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204090197U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125670A (en) * | 2014-07-18 | 2014-10-29 | 常州市格林照明灯具制造有限公司 | LED (Light Emitting Diode) lamp surge absorption circuit |
-
2014
- 2014-07-18 CN CN201420401649.XU patent/CN204090197U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125670A (en) * | 2014-07-18 | 2014-10-29 | 常州市格林照明灯具制造有限公司 | LED (Light Emitting Diode) lamp surge absorption circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGZHOU GREEN LIGHTING CO., LTD. Free format text: FORMER NAME: CHANGZHOU CITY GREEN LIGHTING MANUFACTURE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 213025 Jiangsu Province, Changzhou city Qishuyan District streets Lucheng Fumin Road No. 269 Patentee after: CHANGZHOU GREEN LIGHTING CO., LTD. Address before: 213025 Jiangsu Province, Changzhou city Qishuyan District streets Lucheng Fumin Road No. 269 Patentee before: Changzhou City Green Lighting Manufacture Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20190718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |