BE823865A - PROTECTION SYSTEM AGAINST ABNORMAL VOLTAGES APPLICABLE IN TELEPHONE SWITCHES - Google Patents

PROTECTION SYSTEM AGAINST ABNORMAL VOLTAGES APPLICABLE IN TELEPHONE SWITCHES

Info

Publication number
BE823865A
BE823865A BE2054060A BE2054060A BE823865A BE 823865 A BE823865 A BE 823865A BE 2054060 A BE2054060 A BE 2054060A BE 2054060 A BE2054060 A BE 2054060A BE 823865 A BE823865 A BE 823865A
Authority
BE
Belgium
Prior art keywords
protection system
system against
against abnormal
telephone switches
abnormal voltages
Prior art date
Application number
BE2054060A
Other languages
French (fr)
Inventor
L R Bouty
J-P M A Levieils
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of BE823865A publication Critical patent/BE823865A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
BE2054060A 1973-12-27 1974-12-27 PROTECTION SYSTEM AGAINST ABNORMAL VOLTAGES APPLICABLE IN TELEPHONE SWITCHES BE823865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7346497A FR2256610B1 (en) 1973-12-27 1973-12-27

Publications (1)

Publication Number Publication Date
BE823865A true BE823865A (en) 1975-06-27

Family

ID=9129754

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2054060A BE823865A (en) 1973-12-27 1974-12-27 PROTECTION SYSTEM AGAINST ABNORMAL VOLTAGES APPLICABLE IN TELEPHONE SWITCHES

Country Status (4)

Country Link
BE (1) BE823865A (en)
DE (1) DE2459926B2 (en)
FR (1) FR2256610B1 (en)
GB (1) GB1452428A (en)

Also Published As

Publication number Publication date
FR2256610B1 (en) 1977-08-12
FR2256610A1 (en) 1975-07-25
GB1452428A (en) 1976-10-13
DE2459926B2 (en) 1980-01-31
DE2459926A1 (en) 1975-07-10

Similar Documents

Publication Publication Date Title
CA988124A (en) Side door intrusion protection
AT328538B (en) OVERCURRENT PROTECTION
CA1032226A (en) Overvoltage protection circuit
BE813932A (en) PROTECTION ANODE
BE818003A (en) WATERPROOF PROTECTION ELEMENT
CA1025573A (en) Time division switching system
CA985328A (en) Seal protection guard
BE814441A (en) LIGHTNING SYSTEM
BR7410640D0 (en) SHORT-CIRCUIT PROTECTION CIRCUIT
BE820044A (en) PROTECTION AGAINST AGGRESSION
BR7508251A (en) TELEPHONE SWITCHING SYSTEM
CA1008302A (en) Passive switching system
BE814975A (en) SWITCHING SYSTEM
BE821570A (en) SWITCHING ELEMENT
CA1011598A (en) Passive switching system
CA1019426A (en) Telecommunication system using tdm switching
BE823865A (en) PROTECTION SYSTEM AGAINST ABNORMAL VOLTAGES APPLICABLE IN TELEPHONE SWITCHES
IT1019140B (en) TELEPHONE SWITCHING SYSTEM
CA998150A (en) Telephone switching system
SE407876B (en) RELAY PROTECTION
DK132480C (en) FAULT CURRENT PROTECTION SWITCH
IT1010893B (en) PRIVATE TELEPHONE SWITCHBOARD
IT1050488B (en) ELECTRIC BREAKER
CA1010565A (en) Voltage protection circuit
CA1008925A (en) Thyristor protection system