CN102761111A - Novel protection circuit control device - Google Patents
Novel protection circuit control device Download PDFInfo
- Publication number
- CN102761111A CN102761111A CN2011101115085A CN201110111508A CN102761111A CN 102761111 A CN102761111 A CN 102761111A CN 2011101115085 A CN2011101115085 A CN 2011101115085A CN 201110111508 A CN201110111508 A CN 201110111508A CN 102761111 A CN102761111 A CN 102761111A
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- China
- Prior art keywords
- circuit
- protection circuit
- current
- control device
- current limiting
- Prior art date
- 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.)
- Pending
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- Emergency Protection Circuit Devices (AREA)
- Protection Of Static Devices (AREA)
Abstract
The invention discloses a novel protection circuit control device which belongs to the technical field of electronics. The novel protection circuit control device comprises current limiting elements, a bridge type rectifier, a protection circuit, a tip ringing port, a bypass circuit, a current induction circuit and an overcurrent protection circuit, wherein the overcurrent protection circuit consists of a group of the current limiting elements and is arranged between the bridge type rectifier and telephone equipment protected by the overcurrent protection circuit; the bypass circuit is arranged by crossing the tip ringing port on the downstream of the protection circuit of the current limiting elements; and the current induction circuit is coupled with a loop. The novel protection circuit control device has the advantage of favorably selecting and using controllable current to protect the circuit and maintain enough current required by the continuous operation of a functional circuit of the telephone equipment.
Description
Technical field
The invention discloses a kind of novel protected circuit control device, belong to electronic technology field.
Background technology
At present; The manufacturer of telephone plant provides the criterion of instruction manual and their equipment operation and maintenance; Do not guarantee the user maybe because of operate or surrounding environment on former thereby damage equipment can obtain maintenance; Link test machine group equipment to the very high-tension and current source that they carry at the phone trained service personnel, for example power supply unit or line loop circuit have low-down resistance or high voltage.When it took place, the loop current that surpasses setting possibly produce, and equipment continues the inefficacy that running will cause equipment.Past attempts has the scheme of handle high current problem, and it utilizes suitching type to interrupt method or inserts in the high impedance device loop, with protective circuit.When this overcurrent interrupt method was avoided damaging with protective circuit, it had also caused telephone plant can't operate up to high electric current end.
Summary of the invention
The purpose of this invention is to provide a kind of novel protected circuit control device, particularly directly with the relevant circuit of electronic circuit of protecting telephone plant, protect contingent overcurrent, in order to solve the deficiency in the above-mentioned technology.
The objective of the invention is to realize through following technical scheme: a kind of novel protected circuit control device comprises current limiting element, bridge rectifier; Protective circuit, plug tip ring port, bypass circuit; Current-sensing circuit, circuit overcurrent protection is made up of one group of current limiting element, be installed in bridge rectifier and the telephone plant circuit protected between; Bypass circuit crosses the plug tip ring port installation in the protective circuit downstream of current limiting element, current-sensing circuit and loop coupling.
The invention has the beneficial effects as follows: advantageously select utilization controllable current protective circuit, the functional circuit of keeping telephone plant is at the required enough electric currents of continuous operations.
Description of drawings
Fig. 1 is a structural representation of the present invention
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
As shown in Figure 1, a kind of novel protected circuit control device comprises current limiting element; Bridge rectifier, protective circuit, plug tip ring port; Bypass circuit, current-sensing circuit, circuit overcurrent protection is made up of one group of current limiting element; Between the telephone plant circuit that is installed in bridge rectifier and is protected, bypass circuit crosses the plug tip ring port installation in the protective circuit downstream of current limiting element, current-sensing circuit and loop coupling.
Claims (1)
1. a novel protected circuit control device is characterized in that comprising current limiting element, bridge rectifier; Protective circuit, plug tip ring port, bypass circuit; Current-sensing circuit, circuit overcurrent protection is made up of one group of current limiting element, be installed in bridge rectifier and the telephone plant circuit protected between; Bypass circuit crosses the plug tip ring port installation in the protective circuit downstream of current limiting element, current-sensing circuit and loop coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101115085A CN102761111A (en) | 2011-04-28 | 2011-04-28 | Novel protection circuit control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101115085A CN102761111A (en) | 2011-04-28 | 2011-04-28 | Novel protection circuit control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102761111A true CN102761111A (en) | 2012-10-31 |
Family
ID=47055469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101115085A Pending CN102761111A (en) | 2011-04-28 | 2011-04-28 | Novel protection circuit control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102761111A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056212A (en) * | 1990-04-30 | 1991-11-13 | 北方电信有限公司 | Line interface circuit |
| US5359657A (en) * | 1992-06-08 | 1994-10-25 | Oneac Corporation | Telephone line overvoltage protection apparatus |
| CN1108820A (en) * | 1993-06-09 | 1995-09-20 | 欧奈克公司 | Telephone line overvoltage protection apparatus |
| CN1236211A (en) * | 1998-04-03 | 1999-11-24 | 哈里公司 | High current protection circuit for telephone interface |
-
2011
- 2011-04-28 CN CN2011101115085A patent/CN102761111A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056212A (en) * | 1990-04-30 | 1991-11-13 | 北方电信有限公司 | Line interface circuit |
| US5359657A (en) * | 1992-06-08 | 1994-10-25 | Oneac Corporation | Telephone line overvoltage protection apparatus |
| CN1108820A (en) * | 1993-06-09 | 1995-09-20 | 欧奈克公司 | Telephone line overvoltage protection apparatus |
| CN1236211A (en) * | 1998-04-03 | 1999-11-24 | 哈里公司 | High current protection circuit for telephone interface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121031 |