ZA848759B - Voltage surge arrester circuits - Google Patents
Voltage surge arrester circuitsInfo
- Publication number
- ZA848759B ZA848759B ZA848759A ZA848759A ZA848759B ZA 848759 B ZA848759 B ZA 848759B ZA 848759 A ZA848759 A ZA 848759A ZA 848759 A ZA848759 A ZA 848759A ZA 848759 B ZA848759 B ZA 848759B
- Authority
- ZA
- South Africa
- Prior art keywords
- surge arrester
- electronic
- voltage surge
- power mosfets
- series
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/18—Automatic or semi-automatic exchanges with means for reducing interference or noise; with means for reducing effects due to line faults with means for protecting lines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/025—Current limitation using field effect transistors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Emergency Protection Circuit Devices (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Interface Circuits In Exchanges (AREA)
- Structure Of Telephone Exchanges (AREA)
Abstract
1. Circuit arrangement for the drainage of over-voltages in switching systems comprising a main distributor (HV) and a subscriber module (TB) with electronic SLIC, in which a two-pole electronic current limiter (S1, S2) is in each case arranged in the series arms of the a/b wires in front of the electronic SLIC, characterized in that two in series and oppositely connected power MOSFETs (T1, T1') each are arranged as current limiters and that optoelectronic couplers (01, 01') are used for generating a positive bias voltage at the gate of the power MOSFETs (T1, T1').
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833340927 DE3340927A1 (en) | 1983-11-11 | 1983-11-11 | CIRCUIT ARRANGEMENT FOR DERIVATING OVERVOLTAGE |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA848759B true ZA848759B (en) | 1985-07-31 |
Family
ID=6214136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA848759A ZA848759B (en) | 1983-11-11 | 1984-11-09 | Voltage surge arrester circuits |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0142128B1 (en) |
JP (1) | JPS60118024A (en) |
AT (1) | ATE40773T1 (en) |
BR (1) | BR8405721A (en) |
CA (1) | CA1260535A (en) |
DE (2) | DE3340927A1 (en) |
FI (1) | FI81469C (en) |
ZA (1) | ZA848759B (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3712572C1 (en) * | 1987-04-14 | 1988-08-04 | Telefonbau & Normalzeit Gmbh | Circuit arrangement for overvoltage protection and call current feed on a connection line for telecommunications, in particular telephone switching systems |
CA1260171A (en) * | 1987-05-15 | 1989-09-26 | Reinhard W. Rosch | Protection arrangement for a telephone subscriber line interface circuit |
DE3814661A1 (en) * | 1988-04-29 | 1989-11-09 | Nixdorf Computer Ag | DEVICE FOR SWITCHING THE CALL AC VOLTAGE ON SUBSCRIBER CONNECTION LINES |
US5146384A (en) * | 1989-04-28 | 1992-09-08 | Northern Telecom Limited | Automatically resetting protection arrangement for a telephone subscriber line interface circuit |
EP0529949B1 (en) * | 1991-08-27 | 1996-06-26 | AT&T Corp. | Common mode voltage surge protection circuitry |
GB9223773D0 (en) * | 1992-11-12 | 1992-12-23 | Raychem Ltd | Switching arrangement |
US5696659A (en) * | 1993-02-10 | 1997-12-09 | Maruo; Masaya | Overcurrent protective circuit and semiconductor device |
DE4326596C2 (en) * | 1993-08-07 | 1997-07-17 | Sel Alcatel Ag | Protective circuit arrangement for electronic subscriber circuits |
US6049447A (en) * | 1993-09-08 | 2000-04-11 | Siemens Ag | Current limiting device |
AU688738B2 (en) * | 1993-09-08 | 1998-03-19 | Siemens Aktiengesellschaft | Current limiting device |
DE4402461A1 (en) * | 1994-01-28 | 1995-08-03 | Sel Alcatel Ag | Protection circuit for a subscriber line circuit and subscriber line circuit with it |
US6266223B1 (en) * | 1999-06-30 | 2001-07-24 | Tyco Electronics Corporation | Line protector for a communications circuit |
DE102007036330A1 (en) | 2006-09-12 | 2008-04-03 | Tremco Illbruck Productie B.V. | Bonding method, useful e.g. in building applications, involves applying polyurethane foam of specific setting time to substrate and pressing on component to be bonded |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3631264A (en) * | 1970-02-11 | 1971-12-28 | Sybron Corp | Intrinsically safe electrical barrier system and improvements therein |
DE2435606C3 (en) * | 1974-07-24 | 1979-03-01 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Series connection of field effect transistors for the realization of a high-ohmic linear resistance |
US4170740A (en) * | 1978-02-24 | 1979-10-09 | International Telephone And Telegraph Corporation | High voltage switch and capacitive drive |
US4200898A (en) * | 1978-06-19 | 1980-04-29 | The United States Of America As Represented By The Secretary Of The Navy | Current limiter |
DE2834894A1 (en) * | 1978-08-09 | 1980-02-21 | Siemens Ag | Two terminal electronic overvoltage protector for telephone line - has diodes blocking currents of one polarity and electronic circuit blocking overcurrent of opposite polarity |
JPS5638931A (en) * | 1979-09-06 | 1981-04-14 | Sony Corp | Overcurrent detector circuit |
DE3215551A1 (en) * | 1982-04-26 | 1983-10-27 | Siemens AG, 1000 Berlin und 8000 München | CIRCUIT ARRANGEMENT FOR OVERVOLTAGE PROTECTION OF INTERFACE CIRCUITS |
-
1983
- 1983-11-11 DE DE19833340927 patent/DE3340927A1/en not_active Withdrawn
-
1984
- 1984-11-07 DE DE8484113450T patent/DE3476727D1/en not_active Expired
- 1984-11-07 AT AT84113450T patent/ATE40773T1/en not_active IP Right Cessation
- 1984-11-07 EP EP84113450A patent/EP0142128B1/en not_active Expired
- 1984-11-08 JP JP59235927A patent/JPS60118024A/en active Granted
- 1984-11-09 CA CA000467460A patent/CA1260535A/en not_active Expired
- 1984-11-09 ZA ZA848759A patent/ZA848759B/en unknown
- 1984-11-09 BR BR8405721A patent/BR8405721A/en not_active IP Right Cessation
- 1984-11-09 FI FI844416A patent/FI81469C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE3340927A1 (en) | 1985-05-23 |
EP0142128A1 (en) | 1985-05-22 |
FI844416A0 (en) | 1984-11-09 |
FI844416L (en) | 1985-05-12 |
JPS60118024A (en) | 1985-06-25 |
BR8405721A (en) | 1985-09-10 |
FI81469B (en) | 1990-06-29 |
FI81469C (en) | 1990-10-10 |
ATE40773T1 (en) | 1989-02-15 |
CA1260535A (en) | 1989-09-26 |
EP0142128B1 (en) | 1989-02-08 |
DE3476727D1 (en) | 1989-03-16 |
JPH0586129B2 (en) | 1993-12-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ZA848759B (en) | Voltage surge arrester circuits | |
EP0166581A3 (en) | Cmos circuit overvoltage protection | |
GB1195546A (en) | Improvements in or relating to Electronic Overload Protection Circuit Arrangements | |
SE8106947L (en) | DEVICE FOR OVERHEATING AND OVERVOLTAGE IN A VOLTAGE LIMIT CIRCUIT | |
SE8200230L (en) | OVERVOLTAGE PROTECTION FOR A CIRCUIT | |
ATE164265T1 (en) | SERIES TERMINAL ARRANGEMENT WITH SURGE PROTECTION DEVICES | |
ES2119087T3 (en) | SURGE PROTECTION CIRCUIT. | |
CA2023605A1 (en) | Protection circuit protected from overvoltage and overcurrent | |
EP0139103A3 (en) | Overvoltage protection circuit for slic | |
ZA832886B (en) | Surge voltage protection circuits | |
JPS5763861A (en) | Semiconductor device | |
ES8603126A1 (en) | Electronic contacts and associated devices. | |
ES470362A1 (en) | Bipolar transistor switching network crosspoint | |
ES2134202T3 (en) | TERMINALS REGULATION FOR TELECOMMUNICATION AND DATA TECHNIQUE. | |
SU1075441A1 (en) | Device for generating and transmitting call signals through exchange lines | |
JPS5735422A (en) | Semiconductor circuit | |
JPS5725175A (en) | Inverter device | |
ATE302490T1 (en) | SURGE PROTECTION CIRCUIT | |
GB1452767A (en) | Telecommunication circuit arrangements | |
ES8602310A1 (en) | Telecommunications lines, etc. overload protection circuitry | |
JPS54136271A (en) | Switching circuit of transistor type | |
SE9602265D0 (en) | Telephone Switching Circuit | |
ATE6722T1 (en) | CIRCUIT ARRANGEMENT FOR RECOGNIZING THE SUBSCRIPTION MESSAGE IN TELEPHONE EXCHANGE SYSTEMS. | |
JPS57160151A (en) | Semiconductor integrated circuit device | |
ES8601585A1 (en) | Protection and input circuit for telecommunications line |