GB228387A - Improvements in or in connection with telephonic repeating systems - Google Patents

Improvements in or in connection with telephonic repeating systems

Info

Publication number
GB228387A
GB228387A GB765824A GB765824A GB228387A GB 228387 A GB228387 A GB 228387A GB 765824 A GB765824 A GB 765824A GB 765824 A GB765824 A GB 765824A GB 228387 A GB228387 A GB 228387A
Authority
GB
United Kingdom
Prior art keywords
telephonic
connection
repeating
impedance
repeating systems
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.)
Expired
Application number
GB765824A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to GB765824A priority Critical patent/GB228387A/en
Priority to NL26751A priority patent/NL16989C/xx
Priority to FR580294D priority patent/FR580294A/en
Publication of GB228387A publication Critical patent/GB228387A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

228,387. Western Electric Co., Ltd., (Western Electric Co., Inc.). March, 26, 1924. Repeating and amplifying systems.-An antiside-tone monitoring set for use with a. two-way repeater comprises balanced transformer windings 14, 15, coupled to the two line sections and arranged in series across an impedance 21 influenced by the transmitter 17. The receiver 16 is connected between an intermediate point on the impedance and the junction of the windings 14, 15.
GB765824A 1924-03-26 1924-03-26 Improvements in or in connection with telephonic repeating systems Expired GB228387A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB765824A GB228387A (en) 1924-03-26 1924-03-26 Improvements in or in connection with telephonic repeating systems
NL26751A NL16989C (en) 1924-03-26 1924-04-03
FR580294D FR580294A (en) 1924-03-26 1924-04-18 Improvements to electrical signaling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB765824A GB228387A (en) 1924-03-26 1924-03-26 Improvements in or in connection with telephonic repeating systems

Publications (1)

Publication Number Publication Date
GB228387A true GB228387A (en) 1925-02-05

Family

ID=9837325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB765824A Expired GB228387A (en) 1924-03-26 1924-03-26 Improvements in or in connection with telephonic repeating systems

Country Status (3)

Country Link
FR (1) FR580294A (en)
GB (1) GB228387A (en)
NL (1) NL16989C (en)

Also Published As

Publication number Publication date
FR580294A (en) 1924-11-04
NL16989C (en) 1927-10-15

Similar Documents

Publication Publication Date Title
GB228387A (en) Improvements in or in connection with telephonic repeating systems
GB502499A (en) Improvements in or relating to electrical coupling circuits
GB1412620A (en) Feedback amplifier arrangements
GB288714A (en) Improvements in telegraphy and telephony
US2131578A (en) Monitoring circuit for telephone systems
US1672104A (en) Repeater
ES440331A1 (en) Negative impedance repeater with double amplification, for telephone lines
GB509693A (en) Improvements in electric signal amplifiers incorporating voice-operated devices
GB387391A (en) Improvements in or relating to telephone or like signalling systems
GB523057A (en) Improvements in telephone and like electric signalling systems
GB152190A (en) Improvements in or relating to telegraphic recorders, relays, telephonic receivers or the like
GB204708A (en) Improvements in telephone repeater systems
GB251374A (en) Improvements in or relating to electrical circuits for wireless telegraphy, telephony or the like
GB157388A (en) Improvements in or relating to telegraphic or telephonic communication
GB273490A (en) An improved electric coupling
GB195273A (en) Improvements in telephone repeater systems
GB447758A (en) Improvements in or relating to telephony
GB334895A (en) Improvements in, or relating to, electrical circuits for the amplification of electrical impulses
GB306253A (en) Improvements in inter-valve couplings for thermionic valves
GB613555A (en) Improvements in or relating to signal circuit arrangements
GB262533A (en) Improvements in or relating to supersonic heterodyne receivers
GB388039A (en) Improvements in means of and apparatus for transmitting messages through submarine and other like cables
GB157387A (en) Improvements in or relating to telegraphic or telephonic communication by single line without earth return
GB1258677A (en)
GB256266A (en) Wireless receiving set for compensating disturbances