GB393982A - Improvements in telephone repeaters - Google Patents

Improvements in telephone repeaters

Info

Publication number
GB393982A
GB393982A GB2583931A GB2583931A GB393982A GB 393982 A GB393982 A GB 393982A GB 2583931 A GB2583931 A GB 2583931A GB 2583931 A GB2583931 A GB 2583931A GB 393982 A GB393982 A GB 393982A
Authority
GB
United Kingdom
Prior art keywords
windings
line
way
transformer
amplifier
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
GB2583931A
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.)
Cutler Hammer Europe Ltd
Original Assignee
Igranic Electric 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 Igranic Electric Co Ltd filed Critical Igranic Electric Co Ltd
Priority to GB2583931A priority Critical patent/GB393982A/en
Publication of GB393982A publication Critical patent/GB393982A/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

393,982. Two - way transmission. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, and PADDLE, L. H., 2, Burlington Gardens, Chiswick, both in London. Sept. 15, 1931, No. 25839. [Class 40 (iv).] A two-way line 1 is coupled to two one-way amplifiers 5, 10, through two transformers 2, 3, of which one pair of corresponding windings a are connected to the line 1 and to an artificial line 4 respectively, the second pair of windings b are connected in series or parallel through a step-up transformer 11 to the input circuit of one amplifier 5, whilst the third windings c are connected to the output circuit of the other amplifier 10. The functions of the windings a, c may be performed by a single winding. In a modification, Fig. 4, two valves in parallel are employed for each direction of transmission and the connection to the primary of transformer 11 is made from a tapping on a resistance 14. Specification 321,673, [Class 40 (iv), Telephones &c.], is referred to.
GB2583931A 1931-09-15 1931-09-15 Improvements in telephone repeaters Expired GB393982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2583931A GB393982A (en) 1931-09-15 1931-09-15 Improvements in telephone repeaters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2583931A GB393982A (en) 1931-09-15 1931-09-15 Improvements in telephone repeaters

Publications (1)

Publication Number Publication Date
GB393982A true GB393982A (en) 1933-06-15

Family

ID=10234184

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2583931A Expired GB393982A (en) 1931-09-15 1931-09-15 Improvements in telephone repeaters

Country Status (1)

Country Link
GB (1) GB393982A (en)

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