CN2805155Y - High frequency ceramic gas discharge lamp - Google Patents
High frequency ceramic gas discharge lamp Download PDFInfo
- Publication number
- CN2805155Y CN2805155Y CN 200520073589 CN200520073589U CN2805155Y CN 2805155 Y CN2805155 Y CN 2805155Y CN 200520073589 CN200520073589 CN 200520073589 CN 200520073589 U CN200520073589 U CN 200520073589U CN 2805155 Y CN2805155 Y CN 2805155Y
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- tube
- gas discharge
- frequency
- electrodes
- ceramic
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Abstract
The utility model relates to a high frequency ceramic gas discharge tube, which comprises electrodes, a ceramic tube, carbon wires and electronic powder, wherein the inner side of the ceramic tube (3) is provided with the two mutually symmetrical conical electrodes (1) and (2); the ends of the electrodes are respectively provided with grids (4) and (5); the inner sides of the grids (4) and (5) are coated with the electronic powder (6); the inner wall of the ceramic tube (3) is provided with at least two carbon wires (8) and (9); the inner side of the sealed ceramic tube (3) is filled with inertance gas; metallization layers on both end faces of the ceramic tube (3) are tightly and fixedly connected with the electrodes (1) and (2). The inter-electrode capacitance value of the utility model is reduced to about 0.5 pf. After testing an industrial-proof frequency and an 8 / 20 mu S shortwave life, the electrodes of the high frequency ceramic gas discharge tube still has an electron emission ability. Passing through a cable TV signal with the frequency of 3GHz and more than 3GHz frequency, the signal of the high frequency ceramic gas discharge tube is reduced to-20 decibels. The utility model has the advantage of small transmission loss, basically has no interference to a system, and is widely used for digital communication and a cable TV coaxial cable and a high-frequency transmission system to play a role in over-voltage protection.
Description
Technical field
The utility model relates to a kind of gas discharge tube, especially a kind ofly is used for the high-frequency ceramic gas discharge tube that highfrequency transmission systems is made overvoltage protection.
Background technology
Be struck by lightning, electromagnetic induction, collide with high-voltage line, under the situation of static discharge; when ceramic gas discharge tube commonly used, semiconductor discharge tube two ends applied voltage surpass its specified firing voltage; the breakdown discharge of discharge tube; in case both end voltage is removed; discharge tube returns to open circuit automatically fast; have quickly and safely over-voltage to normal level, reliably get rid of the damage that overvoltage and surge current cause communication electronic equipment, CATV transmission system etc., thereby protected the safety of the equipment and the person.Because the semiconductor discharge tube interelectrode capacitance is generally 100～200pf, and its capacitance of ceramic gas discharge tube is also between 1～10pf, when frequency electromagnetic waves passes through pipe, its excessive capacitance will produce bigger loss, system be formed disturb, and therefore limit ceramic gas discharge tube and the application of semiconductor discharge tube in high-frequency transmission to a certain extent.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of high-frequency ceramic gas discharge tube that highfrequency transmission systems is made overvoltage protection that is used for.
For solving the problems of the technologies described above, high-frequency ceramic gas discharge tube of the present utility model comprises electrode, porcelain tube, carbon line, electronics powder, have two symmetrical electrodes in the porcelain tube at least, described electrode is conical, be respectively arranged with grid on its conical end, scribble the electronics powder in the described grid respectively.
As this gas discharge tube, be provided with two carbon lines on its porcelain tube inwall at least; Described porcelain tube is a sealed tube, and its both ends of the surface metal layer and described electrode are closely affixed, are filled with inert gas in the porcelain tube.
After adopting such structure, though conical grid electrode end area reduces dramatically, because the electronics powder can fully be imbedded in the grid, its cathode emission ability, anti-positive ion bombardment ability still can meet the requirements.This discharge tube capacitance is reduced to 0.5pf; after anti-power frequency and 8/20 μ s shortwave life test; this discharge tube electrode still has enough electron emissivities; by 3GHZ and 3GHZ during with the cable TV signal of upper frequency; signal attenuation is-20 decibels, and loss is minimum, and is noiseless substantially to system; it is widely used in fields such as digital communication, high-frequency transmission and cable tv coax, is comparatively ideal overvoltage protecting device.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is the structural representation of a kind of high-frequency ceramic gas discharge tube of the present utility model.
Fig. 2 is the structural representation of a kind of conical grid electrode of the present utility model.
Fig. 3 is a kind of network schematic diagram that scribbles the electronics powder of the present utility model.
Embodiment
Illustrate by Fig. 1～3, this gas discharge tube comprises at least two electrodes 1,2, porcelain tube 3, at least two carbon lines 8,9, electronics powder 6, in porcelain tube 3, have two electrodes 1,2 at least, described electrode 1,2 is designed to symmetrical taper shape, and its end 1-1, the 2-1 area of a circle is less and gather grid 4,5 respectively, in described grid 4,5, coat electronics powder 6, require to make and fill full electronics powder 6 in the whole grid.At least be provided with two carbon lines 8,9 on porcelain tube 3 inwalls, described carbon line 8,9 is along the even five equilibrium setting of porcelain tube 3 inwall circumference; Fig. 1 shows a kind of high-frequency ceramic gas discharge tube with four carbon lines, and piece mark 7 is a carbon line 7.Described porcelain tube 3 is a sealed tube, adopts both ends of the surface metal level and electrode 1,2 seal weldings of silver-copper brazing alloy with porcelain tube 3, charges into inert gas in the porcelain tube 3.Usually, porcelain tube 3 adopts 95%AL
2O
3Metallized ceramic tubes is made.Electrode 1,2 can be made or form with the cold-heading of iron-nickel alloy rod with the punching press of 4J42 iron-nickel alloy band.
Claims (3)
1, a kind of high-frequency ceramic gas discharge tube, comprise electrode, porcelain tube, carbon line, electronics powder, it is characterized in that: have two symmetrical electrodes (1), (2) in the porcelain tube (3) at least, described electrode (1), (2) are conical, be respectively arranged with grid (4), (5) on its conical end (1-1), (2-1), scribble electronics powder (6) in described grid (4), (5) respectively.
2, high-frequency ceramic gas discharge tube according to claim 1 is characterized in that: be provided with two carbon lines (8), (9) at least on described porcelain tube (3) inwall.
3, high-frequency ceramic gas discharge tube according to claim 1 is characterized in that: described porcelain tube (3) is a sealed tube, and its both ends of the surface metal layer and described electrode (1), (2) are closely affixed, and porcelain tube is filled with inert gas in (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073589 CN2805155Y (en) | 2005-07-11 | 2005-07-11 | High frequency ceramic gas discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073589 CN2805155Y (en) | 2005-07-11 | 2005-07-11 | High frequency ceramic gas discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2805155Y true CN2805155Y (en) | 2006-08-09 |
Family
ID=36910438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520073589 Expired - Lifetime CN2805155Y (en) | 2005-07-11 | 2005-07-11 | High frequency ceramic gas discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2805155Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034660A (en) * | 2010-11-25 | 2011-04-27 | 爱普科斯电子(孝感)有限公司 | Gas discharge tube with shielding ceramic chip |
| CN103236384A (en) * | 2013-04-12 | 2013-08-07 | 冷水江市汇鑫电子陶瓷有限公司 | Process for replacing carbon line with ceramic alloy line on gas discharge tube |
| CN104637760A (en) * | 2015-01-29 | 2015-05-20 | 镇江米青机电有限公司 | Line drawing machine fixture |
| CN104637761A (en) * | 2015-01-29 | 2015-05-20 | 镇江米青机电有限公司 | High-precision porcelain tube automatic line drawing device |
| CN104715985A (en) * | 2015-02-09 | 2015-06-17 | 镇江米青机电有限公司 | Automatic feeding device and method of gas discharge tube line drawing machine |
| CN108631155A (en) * | 2017-03-16 | 2018-10-09 | 深圳科安达电子科技股份有限公司 | A kind of safety-type discharge tube |
-
2005
- 2005-07-11 CN CN 200520073589 patent/CN2805155Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034660A (en) * | 2010-11-25 | 2011-04-27 | 爱普科斯电子(孝感)有限公司 | Gas discharge tube with shielding ceramic chip |
| CN102034660B (en) * | 2010-11-25 | 2017-12-08 | 爱普科斯电子(孝感)有限公司 | Gas-discharge tube with shielding potsherd |
| CN103236384A (en) * | 2013-04-12 | 2013-08-07 | 冷水江市汇鑫电子陶瓷有限公司 | Process for replacing carbon line with ceramic alloy line on gas discharge tube |
| CN104637760A (en) * | 2015-01-29 | 2015-05-20 | 镇江米青机电有限公司 | Line drawing machine fixture |
| CN104637761A (en) * | 2015-01-29 | 2015-05-20 | 镇江米青机电有限公司 | High-precision porcelain tube automatic line drawing device |
| CN104715985A (en) * | 2015-02-09 | 2015-06-17 | 镇江米青机电有限公司 | Automatic feeding device and method of gas discharge tube line drawing machine |
| CN104715985B (en) * | 2015-02-09 | 2017-12-12 | 江苏天泽电力辅机有限公司 | A kind of gas-discharge tube line drawing machine automatic feeder and method |
| CN108631155A (en) * | 2017-03-16 | 2018-10-09 | 深圳科安达电子科技股份有限公司 | A kind of safety-type discharge tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150711 Granted publication date: 20060809 |
|
| EXPY | Termination of patent right or utility model |