CN100508323C - Signal lightning protection circuit - Google Patents
Signal lightning protection circuit Download PDFInfo
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- CN100508323C CN100508323C CNB2005101022418A CN200510102241A CN100508323C CN 100508323 C CN100508323 C CN 100508323C CN B2005101022418 A CNB2005101022418 A CN B2005101022418A CN 200510102241 A CN200510102241 A CN 200510102241A CN 100508323 C CN100508323 C CN 100508323C
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- 230000004224 protection Effects 0.000 title claims description 78
- 239000003990 capacitor Substances 0.000 claims abstract description 53
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 230000008054 signal transmission Effects 0.000 claims abstract description 11
- 230000001629 suppression Effects 0.000 claims description 22
- 230000001052 transient effect Effects 0.000 claims description 22
- 230000001681 protective effect Effects 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241001417495 Serranidae Species 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
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Abstract
This invention relates to one signal lighting protective circuit, which comprises one signal protective units by more than one signal transmission line, wherein, the unit comprises discharging tube F1 between the transmission line and earth end PE; resistance R1 between one end of signal line and other end; instant suppress diode TVS1 between signal line and earth end PE. The invention is characterized by the following: the unit comprises parallel stable power WY1 and capacitor C1 and diode tube D1 by series connected to earth end PE and signal transmission line other end.
Description
Technical field
The present invention relates to electronic technology, particularly a kind of signal lighting protection circuit that is used on the signal transmission line.
Background technology
The most basic existing signal lighting protection unit, structure is made up of the cascade of two-stage pressure limiting circuit as shown in Figure 1, and wherein, the first order is made up of the discharge tube F1 that is arranged at respectively between signal input line A1 and the earth terminal PE; The second level by be series at the resistance R 1 between signal input line A1 and the output line A2, the Transient Suppression Diode TVS1 that is arranged between output line A2 and the earth terminal PE forms.The sort signal lightning protection circuit, when thunder and lightning generation or the input of extraneous overvoltage, when the voltage on the circuit rises to the operation voltage of discharge tube F1, Transient Suppression Diode TVS1, they will present low resistive state, electric current on the by-passing signal line, the voltage clamp that makes output line A2 no longer continues to rise on the operation voltage of Transient Suppression Diode TVS1, and the last voltage of signal transmission line A1-A2 when playing the restriction thunderbolt reaches the lightning protection purpose.
Sort circuit, because the restriction of the manufacture craft of discharge tube and Transient Suppression Diode, present discharge tube and Transient Suppression Diode are at voltage change ratio under the low and little current condition, just there is the error about 10% in its nominal operation voltage, and the operation voltage under surge voltage and impulse current condition more can significantly rise, and operation voltage and corresponding circuit clamp voltage ascending amount thereof may reach about 50% of discharge tube and the former nominal value of Transient Suppression Diode.So, in actual applications, generally all select the concrete specification of these devices by the discharge tube and the 80%--85% principle consistent of Transient Suppression Diode nominal operation voltage with peak-signal level in order not influence the signal transmission on the transmission line; So, when lightning discharge takes place, appear at the 120%--150% that voltage on the signal transmssion line also can reach the nominal operation voltage of selected discharge tube and Transient Suppression Diode, be the 150%--200% of holding wire normal working voltage, even bigger, serious harm is to the safety that is connected electronic equipment on the signal transmssion line.
On the other hand, signal lighting protection shown in Figure 1 unit only comprises a bars transmission line, and in the actual signal lines lightning protection circuit, signal transmssion line can be one, or many article two,, as RS485/RS422, computer network winding thread etc. comprises two bars transmission lines, its respective signal lightning protection circuit is formed by stacking by two above-mentioned signal lighting protection unit, concrete structure as shown in Figure 2, comprise two bars transmission lines, be respectively signal transmssion line A1-A2 and signal transmssion line B1-B2, also comprise respective signal transmission line A1-A2, by discharge tube F1, the signal lighting protection unit one that Transient Suppression Diode TVS1 and resistance R 1 are formed, and respective signal transmission line B1-B2, by discharge tube F2, the signal lighting protection unit two that Transient Suppression Diode TVS2 and resistance R 2 are formed.
Summary of the invention
The technical issues that need to address of the present invention are, how a kind of signal lighting protection circuit is provided, and the clamp voltage of lightning protection circuit can be adjusted to peak-signal level, thereby protection is connected each electronic equipment on the signal transmssion line effectively.
The above-mentioned technical problem of the present invention solves like this, a kind of signal lighting protection circuit is provided, constitute the signal lighting protection unit one to one with signal transmssion line by one or more, this signal lighting protection unit comprises the discharge tube F1 that is connected across between signal transmssion line one end and the earth terminal PE, be connected on first resistance R 1 between signal transmssion line one end and the signal transmssion line other end and be connected across the signal transmssion line other end and earth terminal PE between Transient Suppression Diode TVS1, it is characterized in that: described signal lighting protection unit also comprises the first parallel connection type stabilized voltage power supply WY1 parallel with one another and first capacitor C 1; The described first parallel connection type stabilized voltage power supply WY1 negative pole connects earth terminal PE, and positive pole links to each other with the negative electrode of the first diode D1 and is connected to the signal transmssion line other end by this first diode D1; Described signal lighting protection unit also comprises the second parallel connection type stabilized voltage power supply WY2 parallel with one another and second capacitor C 2; The anodal earth terminal PE that connects of the described second parallel connection type stabilized voltage power supply WY2, negative pole links to each other with the anode of the second diode D2 and is connected to the signal transmssion line other end by this second diode D2; Described signal lighting protection unit also comprise the 3rd diode D3 that anode is connected with described signal transmssion line one end, be connected across the 3rd capacitor C 3 between the 3rd diode D3 negative electrode and the earth terminal PE and be connected on the 3rd diode D3 negative electrode and the first parallel connection type stabilized voltage power supply WY1 positive pole between the 3rd resistance R 3; Described signal lighting protection unit also comprise the 4th diode D4 that negative electrode is connected with described signal transmssion line one end, be connected across the 4th capacitor C 4 between the 4th diode D4 anode and the earth terminal PE and be connected on the 4th diode D4 anode and the second parallel connection type stabilized voltage power supply WY2 negative pole between the 4th resistance R 4.
According to signal lighting protection circuit provided by the invention, an end of described signal transmssion line can be incoming line A1 or output line A2, and the other end of described signal transmssion line can be output line A2 or incoming line A1.
According to signal lighting protection circuit provided by the invention, described electric capacity is electrochemical capacitor, and its positive and negative end is corresponding with its stabilized voltage power supply positive and negative electrode in parallel.
According to signal lighting protection circuit provided by the invention, described signal lighting protection circuit is made of two described signal lighting protection unit, comprise and be connected across the first signal input line A1, the first discharge tube F1 between the earth terminal PE, secondary signal incoming line B1, the second discharge tube F2 between the earth terminal PE, be connected on first resistance R 1 between the first signal input line A1 and the first output line A2, be connected on second resistance R 2 between secondary signal incoming line B1 and the secondary signal output line B2, be connected across the first output line A1, the first Transient Suppression Diode TVS1 between the earth terminal PE, be connected across secondary signal output line B1, the second Transient Suppression Diode TVS2 between the earth terminal PE, also comprise the first parallel connection stabilized voltage power supply WY1 and positive and negative with it corresponding first capacitor C 1 in parallel, the second parallel connection stabilized voltage power supply WY2 and positive and negative with it corresponding second capacitor C 2 in parallel, first rectifier bridge, two of wherein said first rectifier bridge exchange end and are connected respectively to an A2, the 2nd B2 output line, the anode of first rectifier bridge connects the anode of first capacitor C 1, the negative terminal of first rectifier bridge connects the negative terminal of second capacitor C 2, the negative terminal of first capacitor C 1, the anode of second capacitor C 2 and earth terminal PE three link together.
According to signal lighting protection circuit provided by the invention, described signal lighting protection circuit also comprises the 3rd resistance R 3, the 4th resistance R 4, the 3rd capacitor C 3, the 4th capacitor C 4 and second rectifier bridge, wherein said the 3rd resistance R 3 is series at the anode of first capacitor C 1, between the anode of the 3rd capacitor C 3, the 4th resistance R 4 is series at the negative terminal of second capacitor C 2, between the negative terminal of the 4th capacitor C 4, the negative terminal of the 3rd capacitor C 3, the anode of the 4th capacitor C 4, earth terminal PE three link together, two of described second rectifier bridge exchange end and are connected respectively to an A1, the 2nd B1 signal input line, the anode of second rectifier bridge is connected to the anode of the 3rd capacitor C 3, and the negative terminal of second rectifier bridge is connected to the negative terminal of the 4th capacitor C 4.
According to signal lighting protection circuit provided by the invention, described signal lighting protection circuit comprises the signal transmission line more than two, is made of the described signal lighting protection unit consistent with described signal transmission line number.
According to signal lighting protection circuit provided by the invention, described earth terminal PE can be the electric with reference to ground of protection ground or transmission signals.
Signal lighting protection circuit provided by the invention; but its overvoltage circuit adopts super-high-current and keeps the constant parallel connection type stabilized voltage power supply of both end voltage; so signal lighting protection circuit provided by the invention; voltage clamp on the output line can be added at parallel connection type stabilized voltage power supply output voltage diode forward conduction voltage drop (about 0.7 volt) with value on; regulate parallel connection type stabilized voltage power supply output voltage values; can make clamp voltage approach signal peak level, effectively the equipment that connects on the guard signal line.
Description of drawings
Further the present invention is described in detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the electrical block diagram of signal lighting protection of the prior art unit.
Fig. 2 is the structural representation of pairs of transmission line signal lighting protection circuit of the prior art.
Fig. 3 is the electrical block diagram of signal lighting protection provided by the invention unit one.
Fig. 4 is the electrical block diagram of signal lighting protection provided by the invention unit two.
Fig. 5 is the electrical block diagram of signal lighting protection provided by the invention unit three.
Fig. 6 is the electrical block diagram of signal lighting protection provided by the invention unit four.
Fig. 7 is the structural representation of pairs of transmission line signal lighting protection circuit one provided by the invention.
Fig. 8 is the structural representation of pairs of transmission line signal lighting protection circuit two provided by the invention.
Embodiment
Signal lighting protection provided by the invention unit one, as Fig. 3, comprise parallel connection stabilized voltage power supply WY1, capacitor C 1 and diode D1, but parallel connection stabilized voltage power supply WY1 super-high-current and maintenance both end voltage are constant, voltage is excessive on holding wire, automatically by this signal lighting protection unit bypass.This signal lighting protection unit is guard signal output terminals A 2 and forward signal voltage only.
Signal lighting protection provided by the invention unit two as Fig. 4, increases the protection to negative-going signal voltage on the basis of signal lighting protection unit one, add parallel connection stabilized voltage power supply WY2, capacitor C 2 and diode D1.
Signal lighting protection provided by the invention unit three as Fig. 5, increases the overvoltage protection of signal transmssion line input A1 on the basis of signal lighting protection unit one, add diode D3, capacitor C 3 and resistance R 3.
Signal lighting protection provided by the invention unit three as Fig. 6, provides the protection to signal transmssion line both-end and bidirectional overvoltage, adds diode D4, capacitor C 4 and resistance R 4 on the basis of signal lighting protection unit one, two, three.
Embodiment one provided by the invention, a kind of signal lighting protection circuit as shown in Figure 7, comprise and be connected across the first signal input line A1, the first discharge tube F1 between the earth terminal PE, be connected across secondary signal incoming line B1, the second discharge tube F2 between the earth terminal PE, be connected on first resistance R 1 between the first signal input line A1 and the first output line A2, be connected on second resistance R 2 between secondary signal incoming line B1 and the secondary signal output line B2, be connected across the first output line A2, the first Transient Suppression Diode TVS1 between the earth terminal PE, be connected across secondary signal output line B2, the second Transient Suppression Diode TVS2 between the earth terminal PE, also comprise the first parallel connection type stabilized voltage power supply WY1 and positive and negative with it corresponding first capacitor C 1 in parallel, the second parallel connection type stabilized voltage power supply WY2 and positive and negative with it corresponding second capacitor C 2 in parallel, the first rectifier bridge QL1, two interchange ends of the wherein said first rectifier bridge QL1 (
-) be connected respectively on the first output line A2, the secondary signal output line B2, the anode (+) of first rectifier bridge connects the anode (+) of first capacitor C 1, the negative terminal (-) of the first rectifier bridge QL1 connects the negative terminal (-) of second electric capacity, and the anode (+) and the earth terminal PE three of the negative terminal (-) of first capacitor C 1, second capacitor C 2 link together.
Both end voltage remains unchanged because the parallel connection type stabilized voltage power supply can be designed to circulate big electric current, so when thunderbolt takes place, if thunder-strike current flows into holding wire, then pass through first resistance R 1, second resistance R 2, bleed offs such as the first rectifier bridge QL1, the first parallel connection type stabilized voltage power supply WY1 to earth terminal; If thunder-strike current flow-out signal line; then by first resistance R 1; second resistance R 2; the first rectifier bridge QL1; bleed offs such as the second parallel connection type stabilized voltage power supply WY2 are to earth terminal; the voltage of output line is clamped at the first parallel connection type stabilized voltage power supply WY1; the output voltage of the second parallel connection type stabilized voltage power supply WY2 adds on the forward conduction voltage drop (about 0.7 volt) of 1 diode in the rectifier bridge; regulate the first parallel connection type stabilized voltage power supply WY1; the output voltage values of the second parallel connection type stabilized voltage power supply WY2; can make very approach signal peak level of clamp voltage, effectively the equipment that connects on the guard signal line.
The first Transient Suppression Diode TVS1 and the second Transient Suppression Diode TVS2 are when the circuit malfunction of being made up of the first rectifier bridge QL1, the first parallel connection type stabilized voltage power supply WY1, the second parallel connection type stabilized voltage power supply WY2 etc. as complementary element, just work.The first discharge tube F1, the second discharge tube F2 are the voltage on signal input line when reaching its operation voltage, play further bleed off lightning current, alleviate subsequent conditioning circuit pressure.
Embodiment two provided by the invention, another kind of signal lighting protection circuit as shown in Figure 8, comprise and be connected across the first signal input line A1, the first discharge tube F1 between the earth terminal PE, be connected across secondary signal incoming line B1, the second discharge tube F2 between the earth terminal PE, be connected on first resistance R 1 between the first signal input line A1 and the first output line A2, be connected on second resistance R 2 between secondary signal input B1 line and the secondary signal output line B2, be connected across the first output line A1, the first Transient Suppression Diode TVS1 of PE between the earth terminal, be connected across secondary signal output line B2, the second Transient Suppression Diode TVS2 between the earth terminal PE, also comprise the first parallel connection type stabilized voltage power supply WY1 and positive and negative with it corresponding first capacitor C 1 in parallel, the second parallel connection type stabilized voltage power supply WY2 and positive and negative with it corresponding second capacitor C 2 in parallel, the first rectifier bridge QL1, two interchange ends of the wherein said first rectifier bridge QL1 (
-) be connected respectively on the first output line A2, the secondary signal output line B2, the anode (+) of first rectifier bridge connects the anode (+) of first capacitor C 1, the negative terminal (-) of the first rectifier bridge QL1 connects the negative terminal (-) of second electric capacity, and the anode (+) and the earth terminal PE three of the negative terminal (-) of first capacitor C 1, second capacitor C 2 link together.It is characterized in that:
The present invention further comprises the 3rd resistance R 3, the 4th resistance R 4, the 3rd capacitor C 3, the 4th capacitor C 4 and the second rectifier bridge QL2, wherein said the 3rd resistance R 3 is series between the anode (+) of anode (+), the 3rd capacitor C 3 of first capacitor C 1, the 4th resistance R 4 is series between the negative terminal (-) of negative terminal (-), the 4th capacitor C 4 of second capacitor C 2, anode (+), the earth terminal PE three of the negative terminal (-) of the 3rd capacitor C 3, the 4th capacitor C 4 link together, two interchange ends of the described second rectifier bridge QL2 (
-) be connected respectively on the first signal input line A1, the secondary signal incoming line B1, the anode (+) of the second rectifier bridge QL2 is connected to the anode (+) of the 3rd capacitor C 3, and the negative terminal (-) of the second rectifier bridge QL is connected to the negative terminal (-) of the 4th capacitor C 4.
During operate as normal, the both end voltage of the 3rd capacitor C 3 is consistent with the first parallel connection type stabilized voltage power supply WY1, and the both end voltage of the 4th capacitor C 3 is consistent with the second parallel connection type stabilized voltage power supply WY2.When thunderbolt takes place, thunder-strike current passes through the second rectifier bridge QL2, the 3rd capacitor C 3 or the 4th capacitor C 4 bleed offs to earth terminal, the performance of utilizing the electric capacity both end voltage not suddenly change significantly, effectively with the current potential clamper of signal input line on a little more than peak-signal level, for follow-up pressure limiting clamper reduces the heavy burdens.The first discharge tube F1, the second discharge tube F2 are the voltage on signal input line when reaching its operation voltage, play further bleed off lightning current.
Described first parallel connection type stabilized voltage power supply WY1 and first capacitor C 1, the second parallel connection type stabilized voltage power supply WY2 and second capacitor C 2, the first rectifier bridge QL1 in parallel with it in parallel with it, their effect is consistent with the effect among the embodiment one.
The above only is preferred embodiment of the present utility model, all equalizations of being done according to the utility model claim scope change and modify, the covering scope that all should belong to the utility model claim, simultaneously, signal lighting protection circuit of the present invention is not limited to one, two bars transmission lines, can be that a plurality of signal lighting protections unit by many barss of correspondence transmission line constitutes.
Claims (7)
1, a kind of signal lighting protection circuit, constitute the signal lighting protection unit one to one with signal transmssion line by one or more, this signal lighting protection unit comprises the discharge tube (F1) that is connected across between signal transmssion line one end and the earth terminal (PE), be connected on first resistance (R1) between signal transmssion line one end and the signal transmssion line other end and be connected across the signal transmssion line other end and earth terminal (PE) between Transient Suppression Diode (TVS1), it is characterized in that: described signal lighting protection unit also comprises the first parallel connection type stabilized voltage power supply (WY1) and first electric capacity (C1) parallel with one another; Described first parallel connection type stabilized voltage power supply (WY1) negative pole connects earth terminal (PE), and positive pole links to each other with the negative electrode of first diode (D1), also is connected to the signal transmssion line other end by this first diode (D1); Described signal lighting protection unit also comprises the second parallel connection type stabilized voltage power supply (WY2) and second electric capacity (C2) parallel with one another; The anodal earth terminal (PE) that connects of the described second parallel connection type stabilized voltage power supply (WY2), negative pole links to each other with the anode of second diode (D2), also is connected to the signal transmssion line other end by this second diode (D2); Described signal lighting protection unit also comprise the 3rd diode (D3) that anode is connected with described signal transmssion line one end, be connected across the 3rd electric capacity (C3) between the 3rd diode (D3) negative electrode and the earth terminal (PE) and be connected on the 3rd diode (D3) negative electrode and first parallel connection type stabilized voltage power supply (WY1) positive pole between the 3rd resistance (R3); Described signal lighting protection unit also comprise the 4th diode (D4) that negative electrode is connected with described signal transmssion line one end, be connected across the 4th electric capacity (C4) between the 4th diode (D4) anode and the earth terminal (PE) and be connected on the 4th diode (D4) anode and second parallel connection type stabilized voltage power supply (WY2) negative pole between the 4th resistance (R4).
According to the described signal lighting protection circuit of claim 1, it is characterized in that 2, described signal transmssion line one end is incoming line (A1), the described signal transmssion line other end is output line (A2); Perhaps, described signal transmssion line one end is output line (A2), and the described signal transmssion line other end is incoming line (A1).
According to the described signal lighting protection circuit of claim 1, it is characterized in that 3, described electric capacity is electrochemical capacitor, its positive and negative end is corresponding with its parallel connection type stabilized voltage power supply positive and negative electrode in parallel.
According to the described signal lighting protection circuit of claim 1, it is characterized in that 4, described signal lighting protection circuit comprises the signal transmission line more than two, constitute by the described signal lighting protection unit consistent with described signal transmission line number.
According to the described signal lighting protection circuit of claim 1, it is characterized in that 5, described earth terminal (PE) is the electric with reference to ground of protection ground or transmission signals.
6, a kind of signal lighting protection circuit, it is characterized in that, described signal lighting protection circuit comprises first discharge tube (F1) that is connected across between first signal input line (A1) and the earth terminal (PE), be connected across second discharge tube (F2) between secondary signal incoming line (B1) and the earth terminal (PE), be connected on first resistance (R1) between first signal input line (A1) and first output line (A2), be connected on second resistance (R2) between secondary signal incoming line (B1) and the secondary signal output line (B2), be connected across first Transient Suppression Diode (TVS1) between first signal input line (A1) and the earth terminal (PE), be connected across second Transient Suppression Diode (TVS2) between secondary signal incoming line (B1) and the earth terminal (PE), also comprise the first parallel connection type stabilized voltage power supply (WY1) and positive and negative with it corresponding first electric capacity (C1) in parallel, the second parallel connection type stabilized voltage power supply (WY2) and positive and negative with it corresponding second electric capacity (C2) in parallel, first rectifier bridge, two of wherein said first rectifier bridge exchange end and are connected respectively to first output line (A2), secondary signal output line (B2), the outlet side anode of first rectifier bridge connects the anode of first electric capacity (C1), the outlet side negative terminal of first rectifier bridge connects the negative terminal of second electric capacity (C2), the negative terminal of first electric capacity (C1), the anode of second electric capacity (C2) and earth terminal (PE) three link together.
7, according to the described signal lighting protection circuit of claim 6, it is characterized in that, described signal lighting protection circuit also comprises the 3rd resistance (R3), the 4th resistance (R4), the 3rd electric capacity (C3), the 4th electric capacity (C4) and second rectifier bridge, wherein said the 3rd resistance (R3) is series at the anode of first electric capacity (C1), between the anode of the 3rd electric capacity (C3), the 4th resistance (R4) is series at the negative terminal of second electric capacity (C2), between the negative terminal of the 4th electric capacity (C4), the negative terminal of the 3rd electric capacity (C3), the anode of the 4th electric capacity (C4) and earth terminal (PE) three link together, two of described second rectifier bridge exchange end and are connected respectively to first signal input line (A1), secondary signal incoming line (B1), the outlet side anode of second rectifier bridge connects the anode of the 3rd electric capacity (C3), and the outlet side negative terminal of second rectifier bridge connects the negative terminal of the 4th electric capacity (C4).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101022418A CN100508323C (en) | 2005-12-12 | 2005-12-12 | Signal lightning protection circuit |
| PCT/CN2006/003300 WO2007068185A1 (en) | 2005-12-12 | 2006-12-06 | A signal lightning protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101022418A CN100508323C (en) | 2005-12-12 | 2005-12-12 | Signal lightning protection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1808825A CN1808825A (en) | 2006-07-26 |
| CN100508323C true CN100508323C (en) | 2009-07-01 |
Family
ID=36840585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101022418A Expired - Fee Related CN100508323C (en) | 2005-12-12 | 2005-12-12 | Signal lightning protection circuit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100508323C (en) |
| WO (1) | WO2007068185A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100508323C (en) * | 2005-12-12 | 2009-07-01 | 深圳市科陆电源技术有限公司 | Signal lightning protection circuit |
| CN101872968A (en) * | 2010-03-05 | 2010-10-27 | 杭州海康威视数字技术股份有限公司 | Protective circuit |
| CN102932019B (en) * | 2012-10-31 | 2016-01-20 | 中国人民解放军海军工程大学 | Based on very low frequency lightening pulse removing method and the device of quantile |
| US20180337529A1 (en) * | 2017-05-16 | 2018-11-22 | Hamilton Sundstrand Corporation | Aerospace lightning protection for electrical devices |
| CN107872053A (en) * | 2017-11-25 | 2018-04-03 | 贵阳永青仪电科技有限公司 | A kind of lightning protection low level switching value sample circuit |
| CN107966605A (en) * | 2017-11-25 | 2018-04-27 | 贵阳永青仪电科技有限公司 | A kind of lightning protection high level switching value or frequency signal sample circuit |
| CN107976569A (en) * | 2017-11-25 | 2018-05-01 | 贵阳永青仪电科技有限公司 | A kind of thunder-lightning die mould simulates signal sample circuit |
| NL2026660B1 (en) * | 2020-10-12 | 2021-11-01 | Zhejiang Huadian Equipment Testing Inst Co Ltd | High-precision Measuring Device for Pre-breakdown Current of Vacuum Chamber and Measuring Method |
| CN114285264B (en) * | 2021-12-03 | 2024-02-13 | 武汉航空仪表有限责任公司 | Lightning protection filter circuit based on integrated icing detector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2481035Y (en) * | 2001-05-08 | 2002-03-06 | 四川省中光高技术研究所 | Multi-stage lightning protector for telecommunication base station |
| CN2569411Y (en) * | 2002-08-14 | 2003-08-27 | 李锦添 | Lightning protector |
| CN100530886C (en) * | 2005-01-14 | 2009-08-19 | 艾默生网络能源系统有限公司 | Signal lightning protection circuit |
| CN100508323C (en) * | 2005-12-12 | 2009-07-01 | 深圳市科陆电源技术有限公司 | Signal lightning protection circuit |
-
2005
- 2005-12-12 CN CNB2005101022418A patent/CN100508323C/en not_active Expired - Fee Related
-
2006
- 2006-12-06 WO PCT/CN2006/003300 patent/WO2007068185A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007068185A1 (en) | 2007-06-21 |
| CN1808825A (en) | 2006-07-26 |
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Address after: 518057 Guangdong city of Shenzhen province Nanshan District science and Technology Park, Xili Street deep road CLOU tower A 18 floor Patentee after: Shenzhen CLOU Intelligent Industry Co., Ltd. Address before: 5 building, T2 building, South District, Nanshan District hi tech Industrial Park, Guangdong, Shenzhen 518057, China Patentee before: Shenzhen Kelu Power Tech. Co., Ltd. |
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