GB321673A - Improvements in telephone repeater circuit arrangements - Google Patents

Improvements in telephone repeater circuit arrangements

Info

Publication number
GB321673A
GB321673A GB1429028A GB1429028A GB321673A GB 321673 A GB321673 A GB 321673A GB 1429028 A GB1429028 A GB 1429028A GB 1429028 A GB1429028 A GB 1429028A GB 321673 A GB321673 A GB 321673A
Authority
GB
United Kingdom
Prior art keywords
valve
circuit arrangements
repeater circuit
telephone repeater
circuits
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
GB1429028A
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.)
Callenders Cable and Construction Co Ltd
Original Assignee
Callenders Cable and Construction Co Ltd
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 Callenders Cable and Construction Co Ltd filed Critical Callenders Cable and Construction Co Ltd
Priority to GB1429028A priority Critical patent/GB321673A/en
Priority to GB514029A priority patent/GB329033A/en
Publication of GB321673A publication Critical patent/GB321673A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits

Abstract

321,673. Callender's Cable &. Construction Co., Ltd., and Urmston, J. May 15, 1928. Drawings to Specification. Vacuum tubes.-The first Provisional Specification describes a, thermionic valve with two control grids preferably in the same plane with their bars arranged alternately, the grids being of greater extent than the filament and anode. The valve is used in two-way repeating circuits for telephony, and, in certain circumstances, the currents in the two grid circuits are out of phase so that the valve is ineffective.
GB1429028A 1928-05-15 1928-05-15 Improvements in telephone repeater circuit arrangements Expired GB321673A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1429028A GB321673A (en) 1928-05-15 1928-05-15 Improvements in telephone repeater circuit arrangements
GB514029A GB329033A (en) 1928-05-15 1929-02-15 Improvements in telephone repeater circuit arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1429028A GB321673A (en) 1928-05-15 1928-05-15 Improvements in telephone repeater circuit arrangements

Publications (1)

Publication Number Publication Date
GB321673A true GB321673A (en) 1929-11-15

Family

ID=10038487

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1429028A Expired GB321673A (en) 1928-05-15 1928-05-15 Improvements in telephone repeater circuit arrangements
GB514029A Expired GB329033A (en) 1928-05-15 1929-02-15 Improvements in telephone repeater circuit arrangements

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB514029A Expired GB329033A (en) 1928-05-15 1929-02-15 Improvements in telephone repeater circuit arrangements

Country Status (1)

Country Link
GB (2) GB321673A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756282A (en) * 1953-01-12 1956-07-24 Sierra Electronic Corp Directional amplifier system and apparatus
US2864901A (en) * 1952-06-27 1958-12-16 Int Standard Electric Corp Hybrid circuits for connecting a four wire transmission line to a two wire transmission line
WO1981000943A1 (en) * 1979-09-26 1981-04-02 Dasy Int Sa Duplex amplifyer particularly for interphone

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864901A (en) * 1952-06-27 1958-12-16 Int Standard Electric Corp Hybrid circuits for connecting a four wire transmission line to a two wire transmission line
US2756282A (en) * 1953-01-12 1956-07-24 Sierra Electronic Corp Directional amplifier system and apparatus
WO1981000943A1 (en) * 1979-09-26 1981-04-02 Dasy Int Sa Duplex amplifyer particularly for interphone

Also Published As

Publication number Publication date
GB329033A (en) 1930-05-15

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