CN202856345U - Direct current lightning prevention electrostatic prevention protection circuit - Google Patents
Direct current lightning prevention electrostatic prevention protection circuit Download PDFInfo
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- CN202856345U CN202856345U CN 201220498293 CN201220498293U CN202856345U CN 202856345 U CN202856345 U CN 202856345U CN 201220498293 CN201220498293 CN 201220498293 CN 201220498293 U CN201220498293 U CN 201220498293U CN 202856345 U CN202856345 U CN 202856345U
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- protection circuit
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- circuit
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Abstract
The utility model discloses and provides a direct current lightning prevention electrostatic prevention protection circuit with a fast response speed and guarantee of a lightning prevention electrostatic prevention system. The circuit comprises a first level protection circuit (1) and a second level protection circuit (2) which are connected between feeder lines. The first level protection circuit (1) is formed by a resistor I (F1), a plurality of parallelly connected voltage-sensitive resistors which are in series connection with the resistor I (F1), and two gas discharge tubes (G1, G2) which are in parallel connection and are grounded. The second level protection circuit (2) is formed by a resistor II (F2), a voltage-sensitive resistor III (Rvz3) and a bidirectional TVS voltage stabilizing tube (T1) which are is parallel connection and then are in series connection with the resistor II (F2), and two gas discharge tubes (G3, G4) which are in parallel connection and are grounded. When in working, the feeder lines between the first level protection circuit (1) and the second level protection circuit (2) become inductors. The direct current lightning prevention electrostatic prevention protection circuit can be applied to the field of direct current power supply circuit protection.
Description
Technical field
The utility model relates to a kind of protective circuit, relates in particular to a kind of DC lightning prevention anti-static protection circuit.
Background technology
In the prior art, the lightning protection device of DC power supply adopts piezo-resistance in parallel more, and the mode of gas discharge tube ground connection is carried out lightning protection, antistatic protection, as shown in Figure 1.But the response speed of this protective device is slower, and pressure limiting and bypass earial drainage slow movement are affected rear class electronic device or circuit easily.The protective circuit of single-stage fails satisfy to keep lightning protection, the antistatic of the electronic equipment opened to ensure requirement.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of fast response time is provided, and makes lightning protection, the more secure DC lightning prevention anti-static protection circuit of anti-static system.
The technical scheme that the utility model adopts is: the utility model comprises I level protective circuit and the II level protective circuit that is connected between the feed line; described I level protective circuit is by the resistance I; two gas discharge tubes of several piezo-resistances in parallel of connecting with described resistance I and earth form; described II level protective circuit is by the resistance II; two gas discharge tubes that form piezo-resistance III relation in parallel and that connect with described resistance II and two-way TVS voltage-stabiliser tube and earth form; during work, the feed line between described I level protective circuit and the described II level protective circuit becomes inductance.
Several piezo-resistances in parallel of connecting with described resistance I comprise piezo-resistance I and piezo-resistance II.
Described I level protective circuit is arranged on the power drives end of feed line, and described II level protective circuit is arranged on the last end of the energising device that feed line connecting.
The beneficial effects of the utility model are: because the utility model is on the feed line of family's DC power supply device; at the last end near power drives end and close energising device described I level protective circuit and II level protective circuit are set; feed line between I level protective circuit and the II level protective circuit works as inductance; described I level protective circuit comprises the resistance I; several piezo-resistances in parallel of connecting with described resistance I and two gas discharge tubes of earth; described II level protective circuit comprises the resistance II; form piezo-resistance III relation in parallel and that connect with described resistance II and two gas discharge tubes of two-way TVS voltage-stabiliser tube and earth; so; can effectively reduce residual voltage and increase through-current capability by described I level protective circuit and II level protective circuit; and adopt two gas discharge tubes formation in parallel common mode to protect; work as thunderbolt; surge; when the overvoltage of the generations such as static enters DC power supply circuit; can pass through piezo-resistance; voltage-stabiliser tube and gas discharge tube flow into the earth and discharge; surge voltage in its power circuit is reduced rapidly; make the electronic circuit of rear class be subject to overvoltage protection, make the lightning protection anti electrostatic system more secure.
Description of drawings
Fig. 1 is the schematic diagram of traditional DC power supply lightning protection device;
Fig. 2 is schematic diagram of the present utility model.
Embodiment
As shown in Figure 2; the utility model comprises I level protective circuit 1 and the II level protective circuit 2 that is connected between the feed line, and described I level protective circuit 1 is comprised of two gas discharge tube G1 and the G2 of the piezo-resistance of resistance I F1, two parallel connections of connecting with described resistance I F1 and earth.The piezo-resistance of two parallel connections comprises piezo-resistance I Rvz1 and piezo-resistance II Rvz2.Described II level protective circuit 2 is comprised of resistance II F2, two gas discharge tube G3 that form piezo-resistance III Rvz3 relation in parallel and that connect with described resistance II F2 and two-way TVS voltage-stabiliser tube T1 and earth and G4.During work, the feed line between described I level protective circuit 1 and the described II level protective circuit 2 becomes inductance.
In described I level protective circuit 1, resistance F1 connects with piezo-resistance Rvz1, the Rvz2 of two parallel connections, plays the dividing potential drop effect; Piezo-resistance Rvz1 and Rvz2 are in parallel, form the differential mode protection in the first class of protection circuit.Select two or more piezo-resistance parallel connections can effectively reduce residual voltage and increase through-current capability; Select the protection of two gas discharge tube G1 and G2 formation in parallel common mode.
The described II level protective circuit 2 same resistance F2 that adopt are as dividing potential drop, adopt the protection of piezo-resistance Rvz3 and two-way TVS voltage-stabiliser tube T1 formation in parallel differential mode, the response time of two-way TVS voltage-stabiliser tube T1 can reach the ps level, be the fastest in the votage limit type device of surge protector, can satisfy the response speed for the overvoltage protection of electronic circuit; Select the protection of two gas discharge tube G3, G4 formation in parallel common mode.
Two gas discharge tubes I level protection circuit that consists of in parallel is adopted in the common mode protection, and its advantage is to have lower output residual voltage, in case the late-class circuit overvoltage can be fitted various lightning protection circuit.Dual-electrode protecting circuit all should select protective tube as protection device.In this DC lightning prevention anti-static protection circuit the superpotential ability of the antisurge of late-class circuit a little less than, described I level protection circuit 1 is not enough to protect the electronic equipment of rear class, need to residual voltage further be reduced by described II level protective circuit 2.The utility model is applicable to the lightning protection anti electrostatic circuit of normal domestic use DC power supply device.Described I level protection circuit 1 is separately positioned on different positions with described II level protective circuit 2.Described I level protective circuit 1 is arranged on the power drives end of feed line, and described II level protective circuit 2 is arranged on the last end of the energising device that feed line connecting.
In sum, the utility model can be applicable to DC power supply circuit protection field.
Claims (3)
1. DC lightning prevention anti-static protection circuit; it is characterized in that: this protective circuit comprises I level protective circuit (1) and the II level protective circuit (2) that is connected between the feed line; described I level protective circuit (1) is by resistance I (F1); several piezo-resistances in parallel of connecting with described resistance I (F1) and two gas discharge tube (G1 of earth; G2) form; described II level protective circuit (2) is by resistance II (F2); form piezo-resistance III (Rvz3) relation in parallel and that connect with described resistance II (F2) and two gas discharge tube (G3 of two-way TVS voltage-stabiliser tube (T1) and earth; G4) form; during work, the feed line between described I level protective circuit (1) and the described II level protective circuit (2) becomes inductance.
2. a kind of DC lightning prevention anti-static protection circuit according to claim 1, it is characterized in that: several piezo-resistances in parallel of connecting with described resistance I (F1) comprise piezo-resistance I (Rvz1) and piezo-resistance II (Rvz2).
3. a kind of DC lightning prevention anti-static protection circuit according to claim 1; it is characterized in that: described I level protective circuit (1) is arranged on the power drives end of feed line, and described II level protective circuit (2) is arranged on the last end of the energising device that feed line connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220498293 CN202856345U (en) | 2012-09-27 | 2012-09-27 | Direct current lightning prevention electrostatic prevention protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220498293 CN202856345U (en) | 2012-09-27 | 2012-09-27 | Direct current lightning prevention electrostatic prevention protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202856345U true CN202856345U (en) | 2013-04-03 |
Family
ID=47987503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220498293 Expired - Fee Related CN202856345U (en) | 2012-09-27 | 2012-09-27 | Direct current lightning prevention electrostatic prevention protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202856345U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244863A (en) * | 2014-06-17 | 2016-01-13 | 艾默生网络能源系统北美公司 | Surge protection circuit and power electronic equipment |
| CN106655138A (en) * | 2016-12-30 | 2017-05-10 | 广东百圳君耀电子有限公司 | Surge protection circuit |
| CN110994573A (en) * | 2019-11-22 | 2020-04-10 | 重庆市送变电工程有限公司 | Leakage protection circuit based on transformer reversal polarity demagnetization method |
| CN111725792A (en) * | 2020-07-16 | 2020-09-29 | 韶关高尔德防雷科技有限公司 | Direct current power supply lightning protection circuit |
-
2012
- 2012-09-27 CN CN 201220498293 patent/CN202856345U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244863A (en) * | 2014-06-17 | 2016-01-13 | 艾默生网络能源系统北美公司 | Surge protection circuit and power electronic equipment |
| CN106655138A (en) * | 2016-12-30 | 2017-05-10 | 广东百圳君耀电子有限公司 | Surge protection circuit |
| CN110994573A (en) * | 2019-11-22 | 2020-04-10 | 重庆市送变电工程有限公司 | Leakage protection circuit based on transformer reversal polarity demagnetization method |
| CN111725792A (en) * | 2020-07-16 | 2020-09-29 | 韶关高尔德防雷科技有限公司 | Direct current power supply lightning protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHUHAI TAICHUAN ELECTRIC MANUFACTURING CO., LTD. Free format text: FORMER OWNER: ZHUHAI TAICHUAN ELECTRONIC BUSINESS CO., LTD. Effective date: 20141008 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141008 Address after: 519070, No. 1, building 611, Warwick Road, Qianshan Industrial Zone, Guangdong, Zhuhai Province, China, three or four Patentee after: Tai Chuan electrical equipment Manufacturing Co., Ltd of Zhuhai City Address before: 519070, Tai Chuan Industrial Park, 611 Warwick Road, front Hill Industrial Area, Zhuhai, Guangdong Patentee before: Zhuhai Taichuan Electronic Enterprise Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: ZHUHAI TAICHUAN CLOUD TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHUHAI TAICHUAN ELECTRIC MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 519070, No. 1, building 611, Warwick Road, Qianshan Industrial Zone, Guangdong, Zhuhai Province, China, three or four Patentee after: ZHUHAI TAICHUAN CLOUD TECHNOLOGY CO., LTD. Address before: 519070, No. 1, building 611, Warwick Road, Qianshan Industrial Zone, Guangdong, Zhuhai Province, China, three or four Patentee before: Tai Chuan electrical equipment Manufacturing Co., Ltd of Zhuhai City |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20200927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |