CN102447250A - Simple and practical lightning protection circuit - Google Patents
Simple and practical lightning protection circuit Download PDFInfo
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- CN102447250A CN102447250A CN201010298130XA CN201010298130A CN102447250A CN 102447250 A CN102447250 A CN 102447250A CN 201010298130X A CN201010298130X A CN 201010298130XA CN 201010298130 A CN201010298130 A CN 201010298130A CN 102447250 A CN102447250 A CN 102447250A
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- protective tube
- lightning protection
- incoming line
- piezo
- resistance
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Abstract
The invention discloses a high voltage resistant and lightningproof simple and practical lightning protection circuit which comprises two input wires, wherein a high voltage resistant varistor is connected between the two input wires in a crossing way, a high current resistant insurance tube is connected in series to the input wire arranged at the front end of the varistor, a low current resistant insurance tube is connected in series to the input wire arranged at the back end of the varistor; or the circuit comprises two input wires, wherein a high voltage resistant varistor is connected between the two input wires in the crossing way, a high current resistant insurance tube is connected in series among the two input wires and the varistor, and the input wire arranged at the back end of the varistor is connected in series with a low current resistant insurance tube. In the simple and practical lightning protection circuit, with the adoption of the high voltage resistant varistor, the lightningproof requirement of 6000V can be satisfied, and the loss to a power grid caused by short circuit of the varistor can be also prevented; meanwhile, because the insurance tube arranged at the front end is the high current resistant insurance tube, the loss to the insurance tube caused by lightning stroke can be effectively prevented; and with the adoption of the invention, the loss to an electric appliance caused by overlarge power consumption of the electric appliance can be prevented, thereby the safety requirements are satisfied.
Description
Technical field
The present invention discloses the simple and practical lightning protection circuit of a kind of lightning protection circuit, particularly a kind of high pressure resistant lightning protection.
Background technology
At present, most electrical equipment all are that electric main is supplied power, please referring to accompanying drawing 1; Stipulate according to safety; The prime of the incoming line of civil power input interface circuit all will be connected in series a protective tube F1, preventing causing accidents such as on fire because of internal short-circuit, and in the selection of protective tube F1; General electrical equipment is according to its bulk properties, and all can select blowout current for use is the protective tube of T2A 250V in the model of 2A～3.15A.In order to prevent electrical equipment to be caused damage, generally between two incoming lines of electrical equipment, all can be connected in series a piezo-resistance MOV1, to reach the purpose of lightning protection because of incoming line is struck by lightning or surge etc. occurs.In the requirement to lightning protection, general electrical equipment requirement can prevent the 2000V high pressure, and electrical equipment is not damaged, and like this, it is can meeting the demands of 07D471K that common piezo-resistance MOV1 selects model for use.And in the abominable occasion of perhaps lightning protection being had relatively high expectations of environment for use, requirement can prevent the 6000V high pressure, and like this, has just produced a contradiction; When lightning protection required to reach, under the situation of high pressure thunderbolt, protective tube will burn, and needed frequent replacing protective tube; If adopt the bigger protective tube of blowout current, though under the situation of high pressure thunderbolt, protective tube can not burn; When electrical equipment produced fault, protective tube can not burn yet, and causes the accident, and this is a pair of insurmountable contradiction; Designer of the prior art can only adopt the lower protective tube of blowout current, to guarantee the safety of electrical equipment, prays electrical equipment and can be struck by lightning.
Summary of the invention
The shortcoming that protection can not be carried out simultaneously to the above-mentioned high pressure lightning protection of mentioning of the prior art and low current; The present invention changes the technological prejudice in the industry; Changed the conventional design angle, looked for another way, a kind of simple and practical lightning protection circuit of high pressure resistant lightning protection newly is provided; It adopts the two-stage safety pipe to cooperate piezo-resistance, can realize the protection of high pressure lightning protection and low current simultaneously.
The technical scheme that the present invention solves its technical problem employing is: a kind of simple and practical lightning protection circuit; Circuit comprises two incoming lines; Article two, the incoming line span is connected to high pressure resistant piezo-resistance; Be serially connected with anti-high electric current protective tube on the incoming line of piezo-resistance front end, be serially connected with the protective tube of anti-the low current on the incoming line of piezo-resistance rear end.
The another kind of technical scheme that the present invention solves its technical problem employing is: a kind of simple and practical lightning protection circuit; Circuit comprises two incoming lines; Article two, the incoming line span is connected to high pressure resistant piezo-resistance; Article two, be connected in series with anti-high electric current protective tube with piezo-resistance between incoming line, be serially connected with the protective tube of anti-the low current on the incoming line of piezo-resistance rear end.
The technical scheme that the present invention solves its technical problem employing further comprises:
Described anti-high electric current protective tube and the protective tube of anti-the low current are arranged on the same incoming line.
One is the live wire incoming line in described two incoming lines, and another is the zero line incoming line, and anti-high electric current protective tube and the protective tube of anti-the low current are arranged on the live wire incoming line.
One is the live wire incoming line in described two incoming lines, and another is the zero line incoming line, and the protective tube of anti-the low current is arranged on the live wire incoming line.
Be serially connected with thermistor on the incoming line of described piezo-resistance front end.
Described thermistor is serially connected on the zero line.
It is the above ceramic protective tube of 6.3A that described anti-high electric current protective tube adopts blowout current.
It is the plate glass insurance pipe of 2A～3.15A that the described protective tube of anti-the low current adopts blowout current.
Described piezo-resistance is 14D471K or 14D681K.
The invention has the beneficial effects as follows: among the present invention, adopt high pressure resistant piezo-resistance can play the lightning protection requirement of 6000V, simultaneously; On the incoming line of piezo-resistance front end, be in series with anti-high electric current protective tube, perhaps be connected in series with anti-high electric current protective tube, can prevent the damage that causes because of the piezo-resistance short circuit electrical network with piezo-resistance; Simultaneously; Because the front end protective tube is anti-high electric current protective tube, can effectively prevent the damage that protective tube caused because of being struck by lightning, the piezo-resistance rear end also is in series with the protective tube of anti-the low current; Can prevent again to satisfy safety requirements because of the excessive damage that electrical equipment self is caused of electrical equipment power consumption.Among the present invention, also on the incoming line of piezo-resistance front end, be in series with thermistor, play preventing the percussion of powered on moment voltage to circuit.
To combine accompanying drawing and embodiment that the present invention is further specified below.
Description of drawings
Fig. 1 is a lightning protection circuit schematic diagram simple and practical in the prior art.
Fig. 2 is the embodiment of the invention one circuit theory diagrams.
Fig. 3 is the embodiment of the invention two circuit theory diagrams.
Embodiment
Present embodiment is the preferred embodiment for the present invention, and other all its principles are identical with present embodiment or approximate with basic structure, all within protection range of the present invention.
Embodiment one: please referring to accompanying drawing 2, among the present invention, lightning protection circuit comprises two incoming lines; Wherein one as the live wire incoming line, and another is as the zero line incoming line, in the present embodiment; Article two, the incoming line span is connected to high pressure resistant piezo-resistance MOV2, in the present embodiment, for the voltage of anti-thunderbolt of realizing piezo-resistance MOV2 can arrive 6000V; It is the piezo-resistance of 14D471K or 14D681K that piezo-resistance is selected model for use, during practical implementation, also can select the piezo-resistance of other models according to actual needs for use.Be serially connected with the first protective tube F2 on the incoming line of piezo-resistance MOV2 front end (end of promptly importing) near power supply; In the present embodiment; The first protective tube F2 is anti-high electric current protective tube, and can select blowout current usually for use is the above ceramic protective tube of 6.3A, and can select model for use is the protective tube of T6.3A250V.Be serially connected with the second protective tube F3 on the incoming line of piezo-resistance MOV2 rear end one end of load (promptly near); In the present embodiment; The second protective tube F3 is the protective tube of anti-the low current, and can adopt blowout current usually is the plate glass insurance pipe of 2A～3.15A, and can select model for use is the protective tube of T2A 250V.In the present embodiment, the first protective tube F2 and the second protective tube F3 are serially connected on same the incoming line, are generally to be connected in series on the live wire.In the present embodiment, be serially connected with thermistor on the zero line incoming line of piezo-resistance MOV2 front end, can prevent that powered on moment electrical network high-tension electricity is to the impact with electric device.
Present embodiment also has the execution mode of another kind of distortion, and the first protective tube F2 is serially connected in respectively on the different incoming lines with the second protective tube F3 exactly.
Embodiment two: please referring to accompanying drawing 3, in the present embodiment, lightning protection circuit comprises two incoming lines; Wherein one as the live wire incoming line, and another is as the zero line incoming line, in the present embodiment; Article two, the incoming line span is connected to high pressure resistant piezo-resistance MOV2, in the present embodiment, for the voltage of anti-thunderbolt of realizing piezo-resistance MOV2 can arrive 6000V; It is the piezo-resistance of 14D471K or 14D681K that piezo-resistance is selected model for use, during practical implementation, also can select the piezo-resistance of other models according to actual needs for use.Article two, be connected in series with the first protective tube F2 with piezo-resistance MOV2 between incoming line; In the present embodiment; The first protective tube F2 is anti-high electric current protective tube, and can select blowout current usually for use is the above ceramic protective tube of 6.3A, and can select model for use is the protective tube of T6.3A250V.Be serially connected with the second protective tube F3 on the incoming line of piezo-resistance MOV2 rear end one end of load (promptly near); In the present embodiment; The second protective tube F3 is the protective tube of anti-the low current, and can adopt blowout current usually is the plate glass insurance pipe of 2A～3.15A, and can select model for use is the protective tube of T2A250V.In the present embodiment, the second protective tube F3 is connected in series on the live wire.In the present embodiment, be serially connected with thermistor on the zero line incoming line of piezo-resistance MOV2 front end, can prevent powered on moment electrical network high-tension electricity to the impact with electric device, in the present embodiment, thermistor also can be serially connected on the live wire incoming line.
Above-mentioned lightning protection circuit can be serially connected on the mains electricity input end of electrical appliance; In the present embodiment; The lightning protection circuit rear end is typical switching power circuit, can carry out lightning protection to switching power circuit through the present invention, during practical implementation; Also can the present invention be used for the mains electricity input end of TV, refrigerator, air-conditioning or the like electrical appliance, electrical equipment is carried out lightning protection.
Among the present invention, adopt high pressure resistant piezo-resistance can play the lightning protection requirement of 6000V, simultaneously; On the incoming line of piezo-resistance front end, be in series with anti-high electric current protective tube; Perhaps be connected in series with anti-high electric current protective tube, can prevent the damage that causes because of the piezo-resistance short circuit, simultaneously electrical network with piezo-resistance; Because the front end protective tube is anti-high electric current protective tube; Can effectively prevent the damage that protective tube caused because of being struck by lightning, the piezo-resistance rear end also is in series with the protective tube of anti-the low current, can prevent again because of the excessive damage that electrical equipment self is caused of electrical equipment power consumption.Among the present invention, also on the incoming line of piezo-resistance front end, be in series with thermistor, play preventing the percussion of powered on moment voltage to circuit.
Claims (10)
1. simple and practical lightning protection circuit; It is characterized in that: described circuit comprises two incoming lines; Article two, the incoming line span is connected to high pressure resistant piezo-resistance; Be serially connected with anti-high electric current protective tube on the incoming line of piezo-resistance front end, be serially connected with the protective tube of anti-the low current on the incoming line of piezo-resistance rear end.
2. simple and practical lightning protection circuit according to claim 1 is characterized in that: described anti-high electric current protective tube and the protective tube of anti-the low current are arranged on the same incoming line.
3. simple and practical lightning protection circuit according to claim 2 is characterized in that: one is the live wire incoming line in described two incoming lines, and another is the zero line incoming line, and anti-high electric current protective tube and the protective tube of anti-the low current are arranged on the live wire incoming line.
4. simple and practical lightning protection circuit; It is characterized in that: described circuit comprises two incoming lines; Article two, the incoming line span is connected to high pressure resistant piezo-resistance; Article two, be connected in series with anti-high electric current protective tube with piezo-resistance between incoming line, be serially connected with the protective tube of anti-the low current on the incoming line of piezo-resistance rear end.
5. simple and practical lightning protection circuit according to claim 4 is characterized in that: one is the live wire incoming line in described two incoming lines, and another is the zero line incoming line, and the protective tube of anti-the low current is arranged on the live wire incoming line.
6. according to claim 1 or 2 or 3 or 4 or 5 described simple and practical lightning protection circuits, it is characterized in that: be serially connected with thermistor on the incoming line of described piezo-resistance front end.
7. simple and practical lightning protection circuit according to claim 6 is characterized in that: described thermistor is serially connected on the zero line.
8. according to claim 1 or 2 or 3 or 4 or 5 described simple and practical lightning protection circuits, it is characterized in that: it is the above ceramic protective tube of 6.3A that described anti-high electric current protective tube adopts blowout current.
9. according to claim 1 or 2 or 3 or 4 or 5 described simple and practical lightning protection circuits, it is characterized in that: it is the plate glass insurance pipe of 2A～3.15A that the described protective tube of anti-the low current adopts blowout current.
10. according to claim 1 or 2 or 3 or 4 or 5 described simple and practical lightning protection circuits, it is characterized in that: described piezo-resistance is 14D471 or 14D681.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010298130XA CN102447250A (en) | 2010-09-30 | 2010-09-30 | Simple and practical lightning protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010298130XA CN102447250A (en) | 2010-09-30 | 2010-09-30 | Simple and practical lightning protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102447250A true CN102447250A (en) | 2012-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010298130XA Pending CN102447250A (en) | 2010-09-30 | 2010-09-30 | Simple and practical lightning protection circuit |
Country Status (1)
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| CN (1) | CN102447250A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208786A (en) * | 2016-08-25 | 2016-12-07 | 苏州苏宝新能源科技有限公司 | There is self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function |
| WO2021052205A1 (en) * | 2019-09-17 | 2021-03-25 | 青岛海尔空调电子有限公司 | Surge absorption circuit for single-phase air conditioning system |
| CN112803367A (en) * | 2021-03-19 | 2021-05-14 | 四川中光防雷科技股份有限公司 | Failure breaking assembly of signal surge protector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4740859A (en) * | 1983-03-31 | 1988-04-26 | Leon A. Hoskamer | Transient voltage surge suppressor and line short monitor |
| CN201523229U (en) * | 2009-11-02 | 2010-07-07 | 杭州华三通信技术有限公司 | Surge protective circuit and device containing common mode choke |
| CN201533161U (en) * | 2009-10-30 | 2010-07-21 | 深圳创维数字技术股份有限公司 | Electrical equipment lightning-protection device |
| CN201829942U (en) * | 2010-09-30 | 2011-05-11 | 深圳茂硕电源科技股份有限公司 | Simple and practical lightning protection circuit |
-
2010
- 2010-09-30 CN CN201010298130XA patent/CN102447250A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4740859A (en) * | 1983-03-31 | 1988-04-26 | Leon A. Hoskamer | Transient voltage surge suppressor and line short monitor |
| CN201533161U (en) * | 2009-10-30 | 2010-07-21 | 深圳创维数字技术股份有限公司 | Electrical equipment lightning-protection device |
| CN201523229U (en) * | 2009-11-02 | 2010-07-07 | 杭州华三通信技术有限公司 | Surge protective circuit and device containing common mode choke |
| CN201829942U (en) * | 2010-09-30 | 2011-05-11 | 深圳茂硕电源科技股份有限公司 | Simple and practical lightning protection circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208786A (en) * | 2016-08-25 | 2016-12-07 | 苏州苏宝新能源科技有限公司 | There is self discharge, H bridge inversion and the solar air-conditioner system of power lightning protection function |
| WO2021052205A1 (en) * | 2019-09-17 | 2021-03-25 | 青岛海尔空调电子有限公司 | Surge absorption circuit for single-phase air conditioning system |
| CN112803367A (en) * | 2021-03-19 | 2021-05-14 | 四川中光防雷科技股份有限公司 | Failure breaking assembly of signal surge protector |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Shenzhen Nanshan District City, Guangdong province 518108 industrial park outside the small pine Tai Bai Lu Bai mang mulberry 6 layer Applicant after: MOSO Power Supply Technology Co., Ltd. Address before: Shenzhen Nanshan District City, Guangdong province 518108 industrial park outside the small pine Tai Bai Lu Bai mang mulberry 6 layer Applicant before: Shenzhen MoSo Power Supply Technology Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SHENZHEN MOSO POWER SUPPLY TECHNOLOGY CO., LTD. TO: MOSO POWER SUPPLY TECHNOLOGY CO., LTD. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120509 |