GB143834A - Improvements in method and apparatus for duplex cable signaling - Google Patents

Improvements in method and apparatus for duplex cable signaling

Info

Publication number
GB143834A
GB143834A GB28843/19A GB2884319A GB143834A GB 143834 A GB143834 A GB 143834A GB 28843/19 A GB28843/19 A GB 28843/19A GB 2884319 A GB2884319 A GB 2884319A GB 143834 A GB143834 A GB 143834A
Authority
GB
United Kingdom
Prior art keywords
arms
condensers
terminals
bridge
duplex
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
GB28843/19A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB143834A publication Critical patent/GB143834A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1423—Two-way operation using the same type of signal, i.e. duplex for simultaneous baseband signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

143,834. Cohen, L. May 27, 1919, [Convention date]. Duplex telegraphs.-In a duplex telegraph system employing a Wheatstone bridge, the transmitting and receiving devices are connected in the diagonals of the bridge, and the grounding- branch of the line is coupled to two adjacent arms of the bridge. The arms a - d, Fig. 1, each comprise resistance, capacity, and inductance, and the line 18 is coupled to the arms b, d by transformers 14, 15 respectively. In a modification, conductive couplings are provided between the terminals of the coils 9, 16 and 12, 17 respectively. In the modification shown in Fig. 3, the coupling-wires are provided with condensers 30, 31, 32, 33. In a further modification, the terminals of the coils 16, 17 are connected through condensers across the terminals of the condensers 8, 11 respectively. To facilitate transmission, the current in the arms a, b is greater than that in the arms c, d, or the ratio of transformation of the transformers 14, 15, Fig. 1, is different.
GB28843/19A 1919-05-27 1919-11-20 Improvements in method and apparatus for duplex cable signaling Expired GB143834A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US143834XA 1919-05-27 1919-05-27

Publications (1)

Publication Number Publication Date
GB143834A true GB143834A (en) 1920-06-17

Family

ID=21765140

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28843/19A Expired GB143834A (en) 1919-05-27 1919-11-20 Improvements in method and apparatus for duplex cable signaling

Country Status (1)

Country Link
GB (1) GB143834A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU682661B2 (en) * 1992-03-10 1997-10-16 Otter Controls Limited Improvements relating to electrically heated water boiling vessels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU682661B2 (en) * 1992-03-10 1997-10-16 Otter Controls Limited Improvements relating to electrically heated water boiling vessels

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