CN1207600A - Telephone line overvoltage protection apparatus - Google Patents
Telephone line overvoltage protection apparatus Download PDFInfo
- Publication number
- CN1207600A CN1207600A CN 98104198 CN98104198A CN1207600A CN 1207600 A CN1207600 A CN 1207600A CN 98104198 CN98104198 CN 98104198 CN 98104198 A CN98104198 A CN 98104198A CN 1207600 A CN1207600 A CN 1207600A
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- solid
- pair
- protection chip
- tip
- ring
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Abstract
An overvoltage protection apparatus used with a pair of telephone lines includes first voltage clamping circuitry for clamping voltage signals on the lines at a first predetermined voltage potential. The first voltage clamping circuitry is formed by at least a pair of solid-state protective chip devices and a failure mode mechanism adapted for connecting the lines to ground responsive to increased temperature of the solidstate protective chip device and providing a ground connection for the pair of solid-state protective chip devices. A pair of current limiting resistors for limiting current flow of the circuitry and connectes to the failure mode mechanism at work, responsive to increased temperature of current limiting resistors, adapted for connecting the circuitry to ground.
Description
The application be according to by the inventor and the application's same assignee application on June 8th, 1992, application number is that the part continuation application of 07/895,380 common pending application and the application number submitted to are 94106541.3, of Chinese patent application that is entitled as " telephone line overvoltage protection apparatus " divides an application.
The present invention relates to telephone line overvoltage protection apparatus, be specifically related to a kind of improved telephone line overvoltage protection method and apparatus.
Over-pressure safety device cooperates telephone wire to use usually, is subjected to the dangerous voltage that is produced by lightning or power surge to prevent telephone plant.The overvoltage crowbar that can overcome many shortcomings in the prior art circuit is published in the United States Patent (USP) 4 of disclosed McCartney on the 19th July in 1988; 758; 920; and July nineteen ninety people such as disclosed McCartney on the 10th United States Patent (USP) 4; 941; in 063, they have all transferred assignee of the present invention.
Usually, utilize the gas discharge tube be inserted in the inert gas filled protection device between the TR tip and ring input link or have an electrode to prevent dangerous voltage, for example, prevent the dangerous voltage that causes by lightning and power surge.The protection device of filling with inert gas or the major defect of gas discharge tube be than solid state device the long response time is arranged.Yet, utilize the known protective device of solid state device to nonserviceable and can not provide the balance work that switches to ground simultaneously to TR tip and ring.Therefore, need the time-delay of a kind of response time short, and can nonserviceable and provide first protective device of effective balance work down.
For the overvoltage general comparatively effectively known protection device of ripple and transient protective of making an uproar, the other problem that is attended by comprises to be made and complexity, the degree of difficulty of assembling and expend man-hour.
Main purpose of the present invention provides a kind of improved telephone line overvoltage protection apparatus; A kind of telephone line overvoltage protection apparatus that helps improving reliability is provided; And provide a kind of known telephone line overvoltage protection apparatus of crossing the many shortcomings of pressure retaining device that overcomes.
In brief, objects and advantages of the present invention realize by means of a kind of telephone line overvoltage protection apparatus.A kind of over-pressure safety device is used with pair of telephone lines, and it comprises: a pair of protection chip device and a malfunction mechanism, and the temperature that responds described protection chip device raises, and adaptively described circuit is connected to ground; And for this provides ground connection connection to the protection chip device; One first base unit casing limits a plurality of guide channel of holding plug, one hold accordingly hold in the plug guide channel input TR tip and ring plug to an output TR tip and ring plug to a ground wire plug; Described input TR tip and ring plug to, described output TR tip and ring plug to described ground wire plug among each all have the thrust ring part of an expansion, they are positioned at each described plug in the described first base unit casing, and each described plug also has the plug elongated portion of extending the described first base unit casing up and down; Parts and fusible element of the drawing of a conduction contained in described malfunction mechanism; The parts of the drawing of described malfunction conduction are global facilities, have a base part of being supported by the described first base unit casing, and limit an aperture and include described ground wire plug in electric contact engagement; The drawing parts of described malfunction conduction contain one first upstanding portion, and it is meshed with described every pair of protection chip device, and provides electrical grounding to them; Described first upstanding portion tool and jack part to being shaped, they are aimed at described aperture, and can hold described ground wire plug; Reach described first upstanding portion and have card-type device, in order to locate and to hold described every pair and protect chip device.
The present invention and above-mentioned and other purpose and advantage, can from hereinafter will describe in detail, be shown in the embodiment of the invention the following drawings and get the best understanding.
Fig. 1 is the circuit theory diagrams according to the telephone line overvoltage protection apparatus of the present invention's formation;
Fig. 2 is the perspective view of the telephone line overvoltage protection apparatus of Fig. 1;
Fig. 3 is the longitudinal sectional view of the telephone line overvoltage protection apparatus partly cut-away of Fig. 1;
Fig. 4 is the profile along the telephone line overvoltage protection apparatus of the intercepting of the line 4-4 among Fig. 3;
Fig. 5 is the profile along the telephone line overvoltage protection apparatus of the intercepting of the line 5-5 among Fig. 3;
Fig. 6 is the profile along the telephone line overvoltage protection apparatus of the intercepting of the line 6-6 among Fig. 3;
Fig. 7 is along the reach the standard grade profile of the telephone line overvoltage protection apparatus that 7-7 looks of Fig. 6;
Fig. 8 is along the reach the standard grade profile of the telephone line overvoltage protection apparatus that 8-8 looks of Fig. 4;
Fig. 9 is the decomposer perspective view according to the part of telephone line overvoltage protection apparatus on Fig. 1 of the present invention's formation;
Figure 10 is the decomposer perspective view that is similar to Fig. 9, and it illustrates first overvoltage crowbar and has a base unit that is assembled into behind the printed circuit board (PCB) registration of second overvoltage crowbar;
Figure 11 is the circuit theory diagrams according to first kind of alternative telephone line overvoltage protection apparatus of the present invention's formation;
Figure 12 is the perspective view of amplification of first kind of alternative configuration structure of telephone line overvoltage protection apparatus shown in Figure 11;
Figure 13 is the decomposition diagram of second kind of alternative configuration structure of the telephone line overvoltage protection apparatus shown in Figure 11 and 12;
Figure 14 is the circuit theory diagrams according to second kind of alternative telephone line overvoltage protection apparatus of the present invention's formation.
Consult accompanying drawing now, a kind of telephone line overvoltage protection apparatus shown in Fig. 1-10, its integral body is marked by reference number 10, is to constitute according to principle of the present invention.With reference to Fig. 1; telephone line overvoltage protection apparatus 10 comprises first overvoltage crowbar; label is 11; comprising the first solid-state over-pressure safety device; label is 12; the second overvoltage crowbar label that is connected between the TR tip and ring input on line is 21; include the resistance 14 of connecting, the resistance 16 of connecting, Transient Voltage Suppressor 18 and capacitor 20, between the resistance 14 and 16 that Transient Voltage Suppressor 18 and capacitor 20 are connected and plug tip and the bad output of plug on line are in series with ring-wire with tip.
Solid-state overpressure means 12 is two-way electrical surge protectors, and it has the clamping voltage of a selected voltage, in order to prevent lightning, line transient and other high voltage spike.Solid-state overpressure means 12 can be used commercially available various devices, the triple sidacs of balanced type (balanced triple sidactor) of the part number 3403AB that is made by the Teccor electronics corporation in Texas, USA Irving (Irving) city for example, its minimum breakover voltage (breakover voltage) rated value is 300 volts.Current-limiting resistance 14 and 16 is preferably positive temperature coefficient (PTC) resistance, presents high resistance, the feature operation of recoverable to provide (resettable) fuse during big electric current.Another kind of alternative plan is, resistance 14 and 16 adopts fuse resistors, and they present open circuit to play a metering function when a predetermined temperature or corresponding current value.
With reference to Fig. 2-10, base unit 22 and outer cover 24 are formed the casing of over-pressure safety device 10 together.In aperture 26A, the 28A, 30A, 32A and the 34A that arrange in a usual manner, install on the base unit 22 and be positioned with TR tip and ring input plug 26,28, TR tip and ring output plug 30,32, and ground wire plug 34.Include a plurality of chocks and hook 36 on the base unit 22, they fasten and are fixed on the outer cover 24 in corresponding aperture or the opening 38, are used to make base unit 22 and outer cover 24 to do the hasp engagement.Base unit 2 includes a plurality of upright arms 40, and they determine the main part 42 that an empty nest is used for including in slidably over-pressure safety device 12, in a recessed thrust surfaces or flange 44 engagements.Over-pressure safety device 12 includes the electrode 46 and 48 that is oppositely arranged, and is used for being electrically connected with TR tip and ring input plug 26 and 28, also comprises an electrode 50 that is positioned at the center, is used for being electrically connected with ground wire plug 34.
As being clearly shown that among Fig. 9, nonserviceabling is used for down a device of balancing run, label be 52 it comprise fail-safe parts 54 and a fusible spherolite 56.Fail-safe parts 54 comprise a horizontally extending bottom 58, and an aperture 60 is arranged on it, are used for admitting slidably ground wire plug 34.Prominent loop section 62 that strengthens on the ground wire plug and bottom 58 engagements provide electrical grounding to fail-safe parts 54.One aperture 66 is set on the vertically extending upper end 64 on the fail-safe parts 54, is used for the location and holds fusible spherolite 56, the heat generating spot in this spherolite 56 and the solid-state overpressure means 12 on presumptive area is adjacent.The position of a pair of relative terminal 68 on the upper end 64 is adjacent with TR tip and ring input plug 26 and 28.When solid-state overpressure means 12 was overheated, fusible spherolite 56 made between fail-safe parts 54 and TR tip and ring input plug 26 and 28 and forms short circuit.
Having on the printed circuit board (PCB) 70 of second overvoltage crowbar 21 has a pair of downward tab 72, and they are fit in the aperture 74 on TR tip and ring output plug 30 and 32, are used for being electrically connected with output plug.
With reference to Fig. 9 and 10, can understand the assembling of over-pressure safety device 10 well.With reference to Fig. 9 figure, plug 26,28,30,32 and 34 is fit on the base unit 22 in corresponding aperture 26A, 28A, 30A and 32A and the 34A slidably.Ground wire plug 34 is fit in the aperture of preventing on the trouble unit 54 60, meshes up to the prominent loop section 62 with the thrust increasing.TR tip and ring input and output plug 26 and 28 and 30 and 32 all include the prominent loop section 76 of increasing of a thrust, are used for TR tip and ring input and output plug are positioned in the base unit 22.Solid-state overpressure means 12, fail-safe spare 54 and fusible spherolite 56 all hold and are positioned in the empty nest that upright arm 40 is determined on the base unit 22.The printed circuit board (PCB) 70 that has second overvoltage crowbar 21 is electrically connected with output plug 30 and 32 by the tab 72 that is contained in the plug aperture 74.The assembling situation of over-pressure safety device 10 is illustrated among Fig. 2-8.
With reference to Fig. 4 and Fig. 8, an aperture 78 in the outer cover 24 can be as shown in figure with TR tip and ring input plug 26 and 28 in each position alignment, in outer cover 24, provide test access.According to the environmental condition of over-pressure safety device 10, aperture 28 can be cancelled.
The base unit 22 of telephone line overvoltage protection apparatus 10 and outer cover 24 be a global facility preferably, is made up of firm, resilient electrical insulating material.Adopt conventional casting process, form the base unit 22 and the outer cover 24 of telephone line overvoltage protection apparatus 10 with plastics or similar synthetic resin material.Fail-safe parts 54 are made up of electric conducting material, for example the thin-sheet metal material of drawing.
Referring now to Figure 11, constitute the circuit theory diagrams of first alternative telephone line overvoltage protection apparatus 80 shown in the figure according to the present invention.Telephone line overvoltage protection apparatus 80 comprises first overvoltage crowbar 82.According to characteristics of the present invention, first overvoltage crowbar includes pair of solid overvoltage protector integrated circuit (IC)-components or chip 84 and 86, and they are connected between the TR tip and ring input on line.First overvoltage crowbar 82 comprises fail-safe parts 88.Second overvoltage crowbar 90 comprises a resistance of connecting with tip 92 and a resistance of connecting with ring-wire 94.
Commercially available various devices can be used as solid- state overvoltage chip 84 and 86, and for example, its minimum breakover voltage rated value of part number P194 that the Teccor electronics corporation in Texas Irving city makes is 300 volts.
With reference to Figure 12 and 13, there is shown first kind of alternative configuration structure that telephone wire is crossed pressure retaining device 80.Base unit 22 the similar characteristics that base unit 100 has as shown in Fig. 2-10, be used with outer cover 24.Base unit 100 is TR tip and ring input plug 102 and 104, TR tip and ring input plug 106 and 108, and ground wire plug 110, pack into and the corresponding aperture that is positioned to arrange in a usual manner in.Include a plurality of chocks or hook 112 on the base unit 100, they fasten and are fixed on the outer cover 24 in corresponding aperture or the opening 38, are used for base unit 100 and do the hasp engagement with outer cover 24.Pair of opposed upstanding flange 114 is arranged on the base unit 100.Pair of conductive, normally the parts of U-shaped or each in the pad 116 are connected to one side of overvoltage protection chip 84 and 86,84 and 86 and flange 114 staggered relatively.Each pad 116 comprises a configured ends subdivision 118, is used for including in respectively TR tip and ring input plug 102 and 104, and provides to corresponding each plug and to be electrically connected.
A global facility 120 provides electrical grounding function and fail-safe operation together with fusible spherolite 121.Global facility 120 is the electric conducting material of drawing preferably, for example the thin-sheet metal material.An aperture 122 that is formed in the end portion 124 is arranged on the global facility 120, and end portion 124 is supported by base unit 100, is used for holding slidably ground wire plug 110.A pair of molded component 126 and 128 is formed on the upright core 130 of global facility 120, and aims at aperture 122, is used for holding slidably ground wire plug 110.Core 130 and overvoltage protection chip 84 and 86 engagements, and provide being electrically connected over the ground to them.Making 134 and following lamels of lamel on (uppertab) (lower tab) 136 on the core 130 with punching press or manufacturing process, be used to hold and locate overvoltage protection chip 84 and 86.The upper end core 138 of global facility 120 includes a pair of curved boom 140 and 142, is used to encase and mechanical positioning resistance 92 and 94.Have a pair of on the upright end 144 of global facility 120 and TR tip and ring input plug 102 and 104 adjacent prominent arms 146.Fail-safe parts 88 provide with Fig. 1-10 in the same function of fail-safe parts 52.If solid- state overvoltage chip 84 or 86 or chip 84 and 86 both take place overheatedly, fusible spherolite 121 is just set up short circuit between prominent arm 146 and TR tip and ring input plug 102 and 104. Overvoltage chip 84 and 86 and fail-safe parts 88 under the overvoltage malfunction, provide balancing run, make all grounding shunts of TR tip and ring.
When current-limiting resistance 92 and 94 ran into overcurrent or parasite current, resistance 92 and 94 heating can cause fusible spherolite 121 fusings, and fusible spherolite 121 is just set up short circuit between prominent arm 146 and TR tip and ring input plug 102 and 104.Current-limiting resistance 92 and 94 and fail-safe parts 88 under the parasite current malfunction, provide balancing run, make all grounding shunts of TR tip and ring.
In protective circuit 80, current- limiting resistance 92 and 94 can omit.Like this, plug tip, plug ring input and output support the head just link together.Therefore, second protective circuit that comprises Transient Voltage Suppressor 18 and electric capacity 20 shown in Fig. 1 can be installed on the protective circuit 80.
Figure 14 illustrates the circuit theory diagrams that briefly are masked as 160 second telephone line overvoltage protection apparatus of selecting 160, and it comprises the first overvoltage holding circuit 162.Use the unit component 84 shown in Figure 11 and 86 and Figure 14 shown in similar monolithic device, its advantage is, and is simple and convenient when reconfiguring protective circuit and manufacturing and assembling.
The present invention has made description with reference to the details of illustrated embodiment, but these details do not limit the scope of the invention, and scope of the present invention is determined by appending claims.
Claims (5)
1. over-pressure safety device that is used with the pair of telephone lines road, described telephone line comprises tip and ring-wire, it is characterized in that, described over-pressure safety device comprises:
The first voltage clamp device is used for the voltage signal on the described circuit is clamped at first scheduled voltage;
The described first voltage clamp device is made up of at least one pair of solid-state protection chip device and a malfunction mechanism, responds the temperature that described solid-state protection chip device increases, and adaptively described circuit is connected to ground; Described malfunction mechanism provides ground connection connection to this to solid-state protection chip device; And
Current-limiting resistance, the electric current that is used for being limited in described circuit flows, and is coupled to described malfunction mechanism when described current-limiting resistance work, and the temperature that responds described current-limiting resistance increases, and adaptively described circuit is connected to ground.
2. over-pressure safety device according to claim 1; it is characterized in that; described pair of solid protection chip device is connected in series between described tip and the ring-wire, and the node of described pair of solid protection chip device is connected on the electrical grounding line.
3. over-pressure safety device according to claim 1; it is characterized in that; first and second pairs of solid-state protection chip devices that are connected in parallel are connected in series between described tip and the ring-wire, and the node of described two pairs of solid-state protection chip devices of parallel connection is connected on the electrical grounding line.
4. over-pressure safety device according to claim 1 is characterized in that, the solid-state protection chip device of described first and second pairs of parallel connections is connected in series between described tip and ring-wire.
5. over-pressure safety device according to claim 4; it is characterized in that; the node of described two pairs of solid-state protection chip devices that are connected in parallel is connected with the solid-state protection chip device of the 3rd pair of parallel connection, and the solid-state protection chip device of the 3rd pair of parallel connection is connected on the electrical grounding line.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/071,755 US5359657A (en) | 1992-06-08 | 1993-06-09 | Telephone line overvoltage protection apparatus |
| US071755 | 1998-05-01 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94106541A Division CN1040714C (en) | 1993-06-09 | 1994-06-08 | Telephone line overvoltage protection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1207600A true CN1207600A (en) | 1999-02-10 |
Family
ID=22103382
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94106541A Expired - Fee Related CN1040714C (en) | 1993-06-09 | 1994-06-08 | Telephone line overvoltage protection apparatus |
| CN 98104198 Pending CN1207600A (en) | 1993-06-09 | 1998-03-20 | Telephone line overvoltage protection apparatus |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94106541A Expired - Fee Related CN1040714C (en) | 1993-06-09 | 1994-06-08 | Telephone line overvoltage protection apparatus |
Country Status (3)
| Country | Link |
|---|---|
| CN (2) | CN1040714C (en) |
| CA (1) | CA2122763A1 (en) |
| MX (1) | MX9404304A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100539342C (en) * | 2004-04-02 | 2009-09-09 | 德恩及索恩两合股份有限公司 | Overvoltage side-discharging device |
| CN111726003A (en) * | 2019-03-19 | 2020-09-29 | 布鲁萨电子公司 | Method for operating an electronic power converter and electronic power converter |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4423798A1 (en) * | 1994-07-01 | 1996-01-11 | Krone Ag | Process for the protection of, in particular, telecommunications systems and protective circuit for carrying out the process |
| CN1046601C (en) * | 1997-04-04 | 1999-11-17 | 王琢之 | Surge current absorber modular, and art for mfg. same |
| CN102761111A (en) * | 2011-04-28 | 2012-10-31 | 郭秀侠 | Novel protection circuit control device |
| CN109416266A (en) * | 2016-06-20 | 2019-03-01 | 皇家飞利浦有限公司 | Medicine coupling unit and sensor side connector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8802434D0 (en) * | 1988-02-03 | 1988-03-02 | British Telecomm | Protector device |
-
1994
- 1994-05-03 CA CA 2122763 patent/CA2122763A1/en not_active Abandoned
- 1994-06-08 MX MX9404304A patent/MX9404304A/en not_active Application Discontinuation
- 1994-06-08 CN CN94106541A patent/CN1040714C/en not_active Expired - Fee Related
-
1998
- 1998-03-20 CN CN 98104198 patent/CN1207600A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100539342C (en) * | 2004-04-02 | 2009-09-09 | 德恩及索恩两合股份有限公司 | Overvoltage side-discharging device |
| CN111726003A (en) * | 2019-03-19 | 2020-09-29 | 布鲁萨电子公司 | Method for operating an electronic power converter and electronic power converter |
| CN111726003B (en) * | 2019-03-19 | 2023-12-22 | 布鲁萨海能公司 | Method for operating an electronic power converter and electronic power converter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1040714C (en) | 1998-11-11 |
| CA2122763A1 (en) | 1994-12-10 |
| MX9404304A (en) | 1995-01-31 |
| CN1108820A (en) | 1995-09-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |