CN2884776Y - Anti-electrostatic and surge preventing circuit - Google Patents
Anti-electrostatic and surge preventing circuit Download PDFInfo
- Publication number
- CN2884776Y CN2884776Y CNU2005201344737U CN200520134473U CN2884776Y CN 2884776 Y CN2884776 Y CN 2884776Y CN U2005201344737 U CNU2005201344737 U CN U2005201344737U CN 200520134473 U CN200520134473 U CN 200520134473U CN 2884776 Y CN2884776 Y CN 2884776Y
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- voltage
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- diode
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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]
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Abstract
The utility model discloses an anti-static and anti-surge circuit, and a voltage regulator diode or a Zener diode or a TVS diode is connected in parallel reversely at the two ends of the LED chip. After the instantaneous voltage is more than the normal working voltage in the circuit, said voltage regulator diode avalanches and provides the instantaneous current with one ultra-low resistance pathway, and the results are that the instantaneous high-voltage and high-current are through the voltage regulator diode and are distracted, to avoid the protected components, and that the protected circuit always remains cut-off voltage before the voltage restores the normal voltage. The utility model has a simple circuit structure, and can keep effectively short-circuit within limits before the transient current pulse generated by static electricity, surge, shock wave, clutters and other over-voltage damages to the line or components, thereby protecting LED chip, extending its life, and it can be integrated in PCB and can be applied to protecting the luminous chips of all the signal lamps, simplifying the structure of the circuit and reducing the costs.
Description
Technical field
The utility model relates to the protective circuit in the low-voltage electrical apparatus; implement the protective circuit of protection when referring to be in operation LED that signal lamp, illumination are used especially overvoltage such as static and surge, Sasser, clutter occur being damaged fault, specifically a kind of antistatic and anti-surge circuit.
Background technology
Prior art LED luminescence chip is that rectification is applied on the LED luminescence chip luminous through rectifier bridge again after interchange or the step-down of direct current process voltage drop element.In production reality, find pure green, pure white, ethereal blue signal lamp advance factory through being assemblied in find in the exfactory inspection per 3000 products have 20～40 light light in the test for a moment or glimmer after do not work, cause product to do over again.And the production qualification rate of lamp holder manufacturer also has only 80%.That is to say that comprehensive scrappage surpasses about 20%, cause man power and material's waste, customer complaint is also often arranged for this reason.The main cause that this phenomenon occurs is the function that this type of luminescence chip does not have antistatic and antisurge, Sasser, clutter, and consequently the performance of chip is difficult to improve, and the life-span does not reach the design level of LED luminescence chip.For reaching protective effect, generally add pressure-sensitive resistance at input, shortcoming is to be integrated in the same chip with the LED luminescence chip.
Summary of the invention
Of the present utility model what will solve is the problems referred to above that prior art exists, and aims to provide a kind of simple in structure and lower-cost antistatic and anti-surge circuit.The technical scheme that addresses the above problem employing is: antistatic and anti-surge circuit, and at voltage stabilizing didoe of described LED luminescence chip two ends reverse parallel connection or a Zener diode or a TVS diode.
Antistatic of the present utility model and anti-surge circuit, the LED luminescence chip is luminous under normal voltage, the internal resistance of LED luminescence chip is very little, with the voltage stabilizing didoe two ends of LED luminescence chip reverse parallel connection by short circuit, almost do not have electric current to pass through.After instantaneous voltage surpasses the circuit normal working voltage; snowslide just takes place in described voltage stabilizing didoe; offer super-low resistance path of transient current; consequently transient high voltage, big electric current are drawn away by voltage stabilizing didoe; avoid protected device, and before voltage is replied normal value, make protected loop remain off voltage always.After transient pulse finished, voltage stabilizing didoe automatically replied high-impedance state, and whole loop enters normal voltage.Because Zener diode is the same with voltage stabilizing didoe with the TVS diode, all has the characteristic of meeting generation Zener snowslide under the high back voltage state, thereby when voltage stabilizing didoe changes by Zener diode or TVS diode, also can play identical protective effect.Thereby; antistatic of the present utility model and anti-surge circuit; adopt simple circuit configuration; the electric current transient pulse that realization produces overvoltage such as static and surge, Sasser, clutter was just contained short circuit effectively before circuit or device not being caused damage, thereby protection LED luminescence chip prolongs its useful life.And circuit of the present utility model can be integrated in PCB and go up and be applied to all signal lamp luminescence chip protections, has simplified circuit structure, has reduced cost.
Described LED luminescence chip can be single led luminescence chip, also can be that a plurality of LED luminescence chips are in series.When circuit for latter's structure is, described voltage stabilizing didoe or Zener diode or the parallel connection of TVS diode are the two ends of this series circuit.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a circuit diagram of the present utility model.
Embodiment
With reference to accompanying drawing, led chip is in series by LED1 chip and LED2 chip, and voltage stabilizing didoe VD5 is connected in reverse parallel in this series circuit two ends, and DC power supply is supplied with led chip and voltage stabilizing didoe VD5 from X1 and X2 two ends.LED is luminous under normal voltage; voltage stabilizing didoe VD5 does not almost have electric current to pass through; after instantaneous voltage surpasses the circuit normal working voltage; snowslide just takes place in voltage stabilizing didoe; offer super-low resistance path of transient current; consequently transient high voltage, big electric current are drawn away by diode, avoid protected device, and made protected loop remain off voltage always before voltage is replied normal value.After transient pulse finished, voltage stabilizing didoe automatically replied high-impedance state, and whole loop enters normal voltage.So just formed a protective circuit.The useful life and the qualification rate that has improved product of signal lamp have been prolonged.
Protective circuit of the present utility model can be applied in the luminescence chip of signal lamp commonly used such as ND1-25, ND1-22, ND16-22.
What should be understood that is: the foregoing description is just to explanation of the present utility model, rather than to restriction of the present utility model, any innovation and creation that do not exceed in the utility model connotation scope all fall within the protection range of the present utility model.
Claims (3)
1, antistatic and anti-surge circuit is characterized in that at voltage stabilizing didoe of described LED luminescence chip two ends reverse parallel connection or a Zener diode or a TVS diode.
2, antistatic as claimed in claim 1 and anti-surge circuit is characterized in that described LED luminescence chip is single led luminescence chip.
3, antistatic as claimed in claim 1 and anti-surge circuit is characterized in that described LED luminescence chip is that a plurality of LED luminescence chips are in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201344737U CN2884776Y (en) | 2005-12-30 | 2005-12-30 | Anti-electrostatic and surge preventing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201344737U CN2884776Y (en) | 2005-12-30 | 2005-12-30 | Anti-electrostatic and surge preventing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2884776Y true CN2884776Y (en) | 2007-03-28 |
Family
ID=37957826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005201344737U Expired - Lifetime CN2884776Y (en) | 2005-12-30 | 2005-12-30 | Anti-electrostatic and surge preventing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2884776Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2246911A2 (en) * | 2008-06-24 | 2010-11-03 | LG Innotek Co., Ltd. | Light emitting device package |
| WO2013095200A2 (en) * | 2011-12-16 | 2013-06-27 | Открытое Акционерное Общество "Производственное Объединение "Уральский Оптико-Механический Завод" Имени Э.С. Яламова, (Оао "По "Уомз") | Explosion-proof light-emitting diode luminaire |
| WO2013134972A1 (en) * | 2012-03-13 | 2013-09-19 | 深圳市华星光电技术有限公司 | Led lamp strip and backlight module |
| CN108389853A (en) * | 2018-03-29 | 2018-08-10 | 电子科技大学 | A kind of full-wave rectification bridge structure of integrated form antisurge |
-
2005
- 2005-12-30 CN CNU2005201344737U patent/CN2884776Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2246911A2 (en) * | 2008-06-24 | 2010-11-03 | LG Innotek Co., Ltd. | Light emitting device package |
| EP2246911A4 (en) * | 2008-06-24 | 2013-10-02 | Lg Innotek Co Ltd | Light emitting device package |
| WO2013095200A2 (en) * | 2011-12-16 | 2013-06-27 | Открытое Акционерное Общество "Производственное Объединение "Уральский Оптико-Механический Завод" Имени Э.С. Яламова, (Оао "По "Уомз") | Explosion-proof light-emitting diode luminaire |
| WO2013095200A3 (en) * | 2011-12-16 | 2013-11-07 | Открытое Акционерное Общество "Производственное Объединение "Уральский Оптико-Механический Завод" Имени Э.С. Яламова, (Оао "По "Уомз") | Explosion-proof light-emitting diode luminaire |
| WO2013134972A1 (en) * | 2012-03-13 | 2013-09-19 | 深圳市华星光电技术有限公司 | Led lamp strip and backlight module |
| CN108389853A (en) * | 2018-03-29 | 2018-08-10 | 电子科技大学 | A kind of full-wave rectification bridge structure of integrated form antisurge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070328 |
|
| EXPY | Termination of patent right or utility model |