GB116107A - Improvements in Systems for Telegraphic and Telephonic Communications. - Google Patents

Improvements in Systems for Telegraphic and Telephonic Communications.

Info

Publication number
GB116107A
GB116107A GB723016A GB723016A GB116107A GB 116107 A GB116107 A GB 116107A GB 723016 A GB723016 A GB 723016A GB 723016 A GB723016 A GB 723016A GB 116107 A GB116107 A GB 116107A
Authority
GB
United Kingdom
Prior art keywords
line
charged
switch
inductance
frequency oscillating
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
GB723016A
Inventor
Joseph Henry Claus
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
Priority to GB723016A priority Critical patent/GB116107A/en
Publication of GB116107A publication Critical patent/GB116107A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

116,107. Claus, J. H. May 20, 1916 Alternating-cutrent systems.-In a telegraph or telephone system employing alternating current and high-frequency oscillating current eitherseparately or together, the line is charged by a direct-current source through a large inductance. When high-frequency oscillating currents are employed, the system is adapted for multiple transmission by tuning the various transmitters and receivers. In the arrangement shown in Fig. 1, the signalling-currents are supplied by an alternator 5 connected to the line 1 and to the return, which may be earth, through condensers 18, 18<a>; while the line is charged by a battery 4 through an inductance 3. When used as a telephone system, a switch 21 is operated to insert a transmitter 20, while the switch 17 is closed: but when used for telegraphing, the transmitter 20 is switched out and the switch 17 operated intermittently. In the arrangement shown in Fig. 2, the line 1<a> is charged by a battery 4<a> through an inductance 3<a>; while the line 1<a> and the aerial 12 are supplied with high-frequency oscillating current by the alternator 5<a> and an intermediate circuit containing the capacity 9 and spark-gap 10.
GB723016A 1916-05-20 1916-05-20 Improvements in Systems for Telegraphic and Telephonic Communications. Expired GB116107A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB723016A GB116107A (en) 1916-05-20 1916-05-20 Improvements in Systems for Telegraphic and Telephonic Communications.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB723016A GB116107A (en) 1916-05-20 1916-05-20 Improvements in Systems for Telegraphic and Telephonic Communications.

Publications (1)

Publication Number Publication Date
GB116107A true GB116107A (en) 1918-06-06

Family

ID=32482066

Family Applications (1)

Application Number Title Priority Date Filing Date
GB723016A Expired GB116107A (en) 1916-05-20 1916-05-20 Improvements in Systems for Telegraphic and Telephonic Communications.

Country Status (1)

Country Link
GB (1) GB116107A (en)

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