NO145969C - WIRING AMPLIFIER FOR FIRETRAAD INFORMATION TRANSFER DEVICES - Google Patents

WIRING AMPLIFIER FOR FIRETRAAD INFORMATION TRANSFER DEVICES

Info

Publication number
NO145969C
NO145969C NO784019A NO784019A NO145969C NO 145969 C NO145969 C NO 145969C NO 784019 A NO784019 A NO 784019A NO 784019 A NO784019 A NO 784019A NO 145969 C NO145969 C NO 145969C
Authority
NO
Norway
Prior art keywords
firetraad
information transfer
transfer devices
amplifier
wiring
Prior art date
Application number
NO784019A
Other languages
Norwegian (no)
Other versions
NO784019L (en
NO145969B (en
Inventor
Johann Willibald Wildmoser
Christian Mueller
Original Assignee
Siemens Ag
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 by Siemens Ag filed Critical Siemens Ag
Publication of NO784019L publication Critical patent/NO784019L/en
Publication of NO145969B publication Critical patent/NO145969B/en
Publication of NO145969C publication Critical patent/NO145969C/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H04B17/401—Monitoring; Testing of relay systems with selective localization
    • H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
    • H04B17/403—Monitoring; Testing of relay systems with selective localization using different frequencies generated by local oscillators

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Fire Alarms (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
NO784019A 1977-11-30 1978-11-29 WIRING AMPLIFIER FOR FIRETRAAD INFORMATION TRANSFER DEVICES NO145969C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2753465A DE2753465C2 (en) 1977-11-30 1977-11-30 Line amplifier for four-wire communications equipment

Publications (3)

Publication Number Publication Date
NO784019L NO784019L (en) 1979-05-31
NO145969B NO145969B (en) 1982-03-22
NO145969C true NO145969C (en) 1982-06-30

Family

ID=6025020

Family Applications (1)

Application Number Title Priority Date Filing Date
NO784019A NO145969C (en) 1977-11-30 1978-11-29 WIRING AMPLIFIER FOR FIRETRAAD INFORMATION TRANSFER DEVICES

Country Status (10)

Country Link
JP (1) JPS54100212A (en)
AT (1) AT375509B (en)
AU (1) AU515433B2 (en)
DE (1) DE2753465C2 (en)
DK (1) DK534678A (en)
IT (1) IT1101136B (en)
NL (1) NL7811729A (en)
NO (1) NO145969C (en)
SE (1) SE7812133L (en)
YU (1) YU40050B (en)

Also Published As

Publication number Publication date
DE2753465C2 (en) 1979-10-04
DE2753465B1 (en) 1979-01-18
AU4179778A (en) 1979-06-07
SE7812133L (en) 1979-05-31
AU515433B2 (en) 1981-04-02
NO784019L (en) 1979-05-31
YU281178A (en) 1983-04-30
NL7811729A (en) 1979-06-01
IT7830133A0 (en) 1978-11-24
IT1101136B (en) 1985-09-28
DK534678A (en) 1979-05-31
ATA857578A (en) 1983-12-15
NO145969B (en) 1982-03-22
YU40050B (en) 1985-06-30
JPS54100212A (en) 1979-08-07
AT375509B (en) 1984-08-10

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