CN2476892Y - Self-healing overvoltage protection device - Google Patents
Self-healing overvoltage protection device Download PDFInfo
- Publication number
- CN2476892Y CN2476892Y CN 01214639 CN01214639U CN2476892Y CN 2476892 Y CN2476892 Y CN 2476892Y CN 01214639 CN01214639 CN 01214639 CN 01214639 U CN01214639 U CN 01214639U CN 2476892 Y CN2476892 Y CN 2476892Y
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- CN
- China
- Prior art keywords
- protection device
- self
- overvoltage protection
- electrodes
- resetting type
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
A self-resetting over-voltage protection device mainly consists of an insulation basic body, two electrodes which are formed by the conductive membrane and is covered at the basic body as well as a discharging space between the two electrodes. The insulation basic body is made of the non-metal oxide which can bear the high temperature, the two electrodes formed by conductive membrane adopt the high melting point metal and alloy. The over-voltage protection device has no follow current, the discharging voltage can reach 6000V, and the current can reach 200A, the static quality is only 0.5P; therefore the utility model is very suitable for the over-voltage protection device of the high frequency signal transmission system such as the wide band network data communication and the computer network and so on, the micro-strip line, the strip line, the symmetrical double line and all strip transmission circuit etc.
Description
The utility model belongs to overvoltage protection device, particularly a kind of overvoltage protection device that is applicable to that wideband network data communication, distributor, computer network, cable TV, microstrip line, strip line, symmetrical two-wire and all banded transmission circuits etc. use.
Existing overvoltage protection device mainly contains piezo-resistance, solid discharging tube and gas discharge tube, though they all have protective effect to electric equipment, but have following shortcoming: 1, the direct capacitance of piezo-resistance and solid discharging tube is bigger, be generally more than the 1000P, will make the high-frequency signal bypass go into ground; After damage, all present short-circuit state in the two poles of the earth, thereby cause reaching the short circuit of circuit between the circuit to ground, influence the normal use of signal transmission and equipment.2, gas discharge tube afterflow, the deboost height, the response time is slow, and the phenomenon that As time goes on can leak air, thereby influences serviceability, does not have the effect of overvoltage protection.
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of long-life with self-reparability, high pressure resistant, low-voltage capacity is provided and can not causes the overvoltage protection device of short circuit under damaged condition.
The overvoltage protection device of realizing the utility model purpose mainly by insulating body, cover formed two electrodes of conducting film on the matrix and be positioned at two electric discharge between electrodes gaps and form.Discharging gap is the slit of a no conducting film, is strip, through the conducting film coverage rate of insulating body.When the voltage that is subjected between two electrodes reached certain amplitude, the interelectrode gas discharge of voltage breakdown reached the purpose of pressure limiting, thereby guard signal equipment makes it exempt from overvoltage and damages.
For the ease of welding with external circuit, the connector of two electrodes and external circuit is conducting film or the lead-in wire that covers the insulating body side.In order to protect discharging gap, be provided with dust cover at formed two electrode surfaces of conducting film.In order to improve anti-pulse current ability, insulating body is made by resistant to elevated temperatures nonmetal oxide, they can be pottery, mica, quartz, sapphire etc., the film formed electrode of conducting electricity adopts high-melting-point simple metal and alloy thereof, and they can be the alloys of simple metal such as gold, silver, copper, antimony, molybdenum, tungsten and above-mentioned simple metal.
The utlity model has following advantage:
1. the direct capacitance amount is little, only is 0.5P, thereby does not influence the signal transmission of kilomega network.
2. not afterflow, discharge voltage can reach 6000 volts, electric current can reach 200 amperes.
3. because discharging gap is plane gas discharge gap, thereby can repeatedly uses repeatedly and do not influence serviceability, and the short circuit disabled status can not occur.
4. because conducting film adopts high-melting point metal or alloy, guaranteed electrode when discharge by bad, the oxidation of combustion, thereby long service life, stable performance.
5. volume is little, and minimum is 3mm * 1.5mm * 0.5mm, and is convenient to welding.
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is a kind of structure chart of the self-resetting type overvoltage protection device that proposes according to the utility model, and the connector of electrode and external circuit is the conducting film of insulating body side;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the B-B cutaway view of Fig. 1;
Fig. 4 is another structure chart of the self-resetting type overvoltage protection device that proposes according to the utility model, and the connector of electrode and external circuit is lead-in wire;
Fig. 5 is Fig. 4 A-A cutaway view.
Embodiment 1:
The structure of the self-resetting type overvoltage protection device in the present embodiment such as Fig. 1, Fig. 2, shown in Figure 3.Insulating body 2 is the plates of 3mm * 1.5mm * 0.5mm by ceramic making; Film formed two electrodes 3 that conduct electricity adopt gold, and its thickness is 10～15 μ m; Being positioned at two electric discharge between electrodes gaps 4 is 10～40 μ m; The connector of two electrodes and external circuit is the conducting film of insulating body side.
Embodiment 2:
The structure of the self-resetting type overvoltage protection device in the present embodiment such as Fig. 4, shown in Figure 5.Insulation body 2 is made by quartz, is the plates of 5mm * 2.5mm * 0.5mm; Film formed two electrodes 3 that conduct electricity adopt copper-tungsten, and its thickness is 20 μ m; Being positioned at two electric discharge between electrodes gaps 4 is 15 μ m; The connector of two electrodes and external circuit is lead-in wire 5.
Claims (9)
1. self-resetting type overvoltage protection device is characterized in that mainly by insulating body (2), covers formed two electrodes of conducting film (3) on the matrix and be positioned at two electric discharge between electrodes gaps (4) and form.
2. self-resetting type overvoltage protection device according to claim 1 is characterized in that discharging gap (4) is a strip, through the conducting film coverage rate of insulation body (2).
3. self-resetting type overvoltage protection device according to claim 1 and 2 is characterized in that formed two electrode surfaces of conducting film are provided with dust cover (1).
4. self-resetting type overvoltage protection device according to claim 1 and 2 is characterized in that two electrodes (3) and the connector of external circuit are conducting film or the lead-in wire (5) that covers the insulating body side.
5. self-resetting type overvoltage protection device according to claim 3 is characterized in that two electrodes (3) and the connector of external circuit are conducting film or the lead-in wire (5) that covers the insulating body side.
6. self-resetting type overvoltage protection device according to claim 1 and 2 is characterized in that insulating body (2) is by pottery or mica or quartz or sapphire making.
7. self-resetting type overvoltage protection device according to claim 5 is characterized in that insulating body (2) is by pottery or mica or quartz or sapphire making.
8. self-resetting type overvoltage protection device according to claim 1 and 2 is characterized in that the used material of electrode (3) is the alloy of gold or silver or copper or antimony or molybdenum or tungsten and above-mentioned simple metal thereof.
9. self-resetting type overvoltage protection device according to claim 7 is characterized in that the used material of electrode (3) is the alloy of gold or silver or copper or antimony or molybdenum or tungsten and above-mentioned simple metal thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01214639 CN2476892Y (en) | 2001-04-05 | 2001-04-05 | Self-healing overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01214639 CN2476892Y (en) | 2001-04-05 | 2001-04-05 | Self-healing overvoltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2476892Y true CN2476892Y (en) | 2002-02-13 |
Family
ID=33633365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01214639 Expired - Lifetime CN2476892Y (en) | 2001-04-05 | 2001-04-05 | Self-healing overvoltage protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2476892Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186479A (en) * | 2015-09-09 | 2015-12-23 | 成都兴业雷安电子有限公司 | Surge protection device of communication and navigation equipment |
-
2001
- 2001-04-05 CN CN 01214639 patent/CN2476892Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186479A (en) * | 2015-09-09 | 2015-12-23 | 成都兴业雷安电子有限公司 | Surge protection device of communication and navigation equipment |
| CN105186479B (en) * | 2015-09-09 | 2018-01-09 | 成都兴业雷安电子有限公司 | A kind of surge protector of communication navigation set |
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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: WANG DEYAN Free format text: FORMER NAME OR ADDRESS: SICHUAN ZHONGGUANG HIGH TECHNOLOGY INST. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Wang Deyan Patentee before: Sichuan Zhongguang High Technology Inst. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110405 Granted publication date: 20020213 |