CN201829942U - Simple and practical lightning protection circuit - Google Patents
Simple and practical lightning protection circuit Download PDFInfo
- Publication number
- CN201829942U CN201829942U CN201020550123XU CN201020550123U CN201829942U CN 201829942 U CN201829942 U CN 201829942U CN 201020550123X U CN201020550123X U CN 201020550123XU CN 201020550123 U CN201020550123 U CN 201020550123U CN 201829942 U CN201829942 U CN 201829942U
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- Prior art keywords
- protective tube
- lightning protection
- incoming line
- piezo
- resistance
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Abstract
The utility model discloses a simple and practical lightning protection circuit, which is resistant to high voltage and lightning. The lightning protection circuit comprises two input wires, wherein a high voltage-resistant voltage dependent resistor is in bridge joint between the two input wires; an input wire at the front end of the voltage dependent resistor is connected in series with a heavy current-resistant protective tube; and an input wire at the back end of the voltage dependent resistor is connected in series with a low current-resistant protective tube; or the circuit comprises two input wires, wherein a high voltage-resistant voltage dependent resistor is in bridge joint with between the two input wires; a heavy current-resistant protective tube is connected in series with the voltage dependent resistor between the two input wires; and an input wire at the back end of the voltage dependent resistor is connected in series with a low current-resistant protective tube. In the utility model, the high voltage-resistant voltage dependent resistor is adopted, so that the requirement on lightning protection of 6,000 volts can be met, and a power grid is prevented from being damaged by short circuit of the voltage dependent resistor; simultaneously, the protective tube at the front end is a heavy current-resistant protective tube, so that the protective tube is prevented from being damaged by lightning. Electrical appliances can be prevented from being damaged by excessively high power consumed by an electrical appliance, and the requirement on safety is met.
Description
Technical field
The utility model 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 powered, 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 environment for use occasion abominable or that lightning protection is had relatively high expectations, requirement can prevent the 6000V high pressure, and like this, just produced a contradiction, when lightning protection requires to reach, under the situation of high pressure thunderbolt, protective tube will burn, and needs 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, still, and when electrical equipment produces fault, protective tube can not burn yet, and cause the accident, 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, pray electrical equipment and can be struck by lightning.
The utility model content
The shortcoming that protection can not be carried out simultaneously at the above-mentioned high pressure lightning protection of mentioning of the prior art and low current; the utility model changes the technology prejudice in the industry; changed the conventional design angle; look 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 its technical problem that solves the utility model adopts 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 its technical problem that solves the utility model adopts 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 its technical problem that solves the utility model adopts 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 beneficial effects of the utility model are: in the utility model, 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 with piezo-resistance, can prevent the damage that causes because of the piezo-resistance short circuit to electrical network, 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 from again to satisfy safety requirements because of the excessive damage that electrical equipment self is caused of electrical equipment power consumption.In the utility model, 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.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Fig. 1 is a lightning protection circuit schematic diagram simple and practical in the prior art.
Fig. 2 is the utility model embodiment one circuit theory diagrams.
Fig. 3 is the utility model embodiment two circuit theory diagrams.
Embodiment
Present embodiment is the utility model preferred implementation, and other all its principles are identical with present embodiment or approximate with basic structure, all within the utility model protection range.
Embodiment one: please referring to accompanying drawing 2, in the utility model, lightning protection circuit comprises two incoming lines, wherein one as the live wire incoming line, 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, when specifically implementing, 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 (i.e. an end of importing near power supply), in the present embodiment, the first protective tube F2 is anti-high electric current protective tube, usually can select blowout current for use is the above ceramic protective tube of 6.3A, and can select model for use is the protective tube of T6.3A 250V.Be serially connected with the second protective tube F3 on the incoming line of piezo-resistance MOV2 rear end (i.e. an end of close load), 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 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, and wherein one as the live wire incoming line, another is as the zero line incoming line, in the present embodiment, two incoming line spans are 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, when specifically implementing, 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 (i.e. an end of close load), 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 by the utility model; during concrete enforcement; also the utility model can 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.
In the utility model, 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 with piezo-resistance, can prevent the damage that causes because of the piezo-resistance short circuit to electrical network, 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 because of the excessive damage that electrical equipment self is caused of electrical equipment power consumption.In the utility model, 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 14D471K or 14D681K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020550123XU CN201829942U (en) | 2010-09-30 | 2010-09-30 | Simple and practical lightning protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020550123XU CN201829942U (en) | 2010-09-30 | 2010-09-30 | Simple and practical lightning protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201829942U true CN201829942U (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020550123XU Expired - Lifetime CN201829942U (en) | 2010-09-30 | 2010-09-30 | Simple and practical lightning protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201829942U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447250A (en) * | 2010-09-30 | 2012-05-09 | 深圳茂硕电源科技股份有限公司 | Simple and practical lightning protection circuit |
| CN114498571A (en) * | 2022-04-15 | 2022-05-13 | 天津光电惠高电子有限公司 | Power battery charger fault protection device and use method |
-
2010
- 2010-09-30 CN CN201020550123XU patent/CN201829942U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447250A (en) * | 2010-09-30 | 2012-05-09 | 深圳茂硕电源科技股份有限公司 | Simple and practical lightning protection circuit |
| CN114498571A (en) * | 2022-04-15 | 2022-05-13 | 天津光电惠高电子有限公司 | Power battery charger fault protection device and use method |
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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: MOSO POWER SUPPLY TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHENZHEN MOSO POWER SUPPLY TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Shenzhen Nanshan District City, Guangdong province 518108 industrial park outside the small pine Tai Bai Lu Bai mang mulberry 6 layer Patentee 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 Patentee before: Shenzhen MoSo Power Supply Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |