GB222829A - Improvements in and relating to pupinised lines for telephone transmission over longdistances - Google Patents

Improvements in and relating to pupinised lines for telephone transmission over longdistances

Info

Publication number
GB222829A
GB222829A GB14640/24A GB1464024A GB222829A GB 222829 A GB222829 A GB 222829A GB 14640/24 A GB14640/24 A GB 14640/24A GB 1464024 A GB1464024 A GB 1464024A GB 222829 A GB222829 A GB 222829A
Authority
GB
United Kingdom
Prior art keywords
pupinised
longdistances
relating
lines
transmission over
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
GB14640/24A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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
Priority claimed from DES63992D external-priority patent/DE452286C/en
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB222829A publication Critical patent/GB222829A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/14—Control of transmission; Equalising characterised by the equalising network used
    • H04B3/146—Control of transmission; Equalising characterised by the equalising network used using phase-frequency equalisers
    • H04B3/147—Control of transmission; Equalising characterised by the equalising network used using phase-frequency equalisers fixed equalisers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

222,829. Siemens & Halske Akt.-Ges. Oct. 5, 1923, [Convention date]. Loading circuits to improve transmission.-In order to prevent distortion due to oscillatory phenomena in a line loaded according to the Pupin method, the phase angle between the voltages at the beginning and end of the line is modified by the addition of a chain conductor so as to give a resultant phase angle which is approximately proportional to the frequency. In the example shown in Fig. 4, the chain conductor, which may be situated at a repeater, comprises inductivelycoupled voltage resonance circuits acting as shunt impedances and current resonance circuits acting as series impedances.
GB14640/24A 1923-10-05 1924-06-17 Improvements in and relating to pupinised lines for telephone transmission over longdistances Expired GB222829A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES63992D DE452286C (en) 1923-10-05 1923-10-05 Pupin guidance for speech transmission over long distances
DES64402D DE453294C (en) 1923-10-05 1923-11-27 Transmission system with pupinized lines for signal transmission over long distances

Publications (1)

Publication Number Publication Date
GB222829A true GB222829A (en) 1925-06-04

Family

ID=25995762

Family Applications (2)

Application Number Title Priority Date Filing Date
GB14641/24A Expired GB225506A (en) 1923-10-05 1924-06-17 Improvements in and relating to pupinised lines for telephone transmission over long distances
GB14640/24A Expired GB222829A (en) 1923-10-05 1924-06-17 Improvements in and relating to pupinised lines for telephone transmission over longdistances

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB14641/24A Expired GB225506A (en) 1923-10-05 1924-06-17 Improvements in and relating to pupinised lines for telephone transmission over long distances

Country Status (6)

Country Link
US (1) US1638536A (en)
AT (1) AT102646B (en)
DE (1) DE453294C (en)
FR (1) FR581334A (en)
GB (2) GB225506A (en)
NL (1) NL19246C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725534A (en) * 1951-03-08 1955-11-29 Mobil Oil Company Inc Recording seismic waves without phase distortion

Also Published As

Publication number Publication date
FR581334A (en) 1924-11-26
AT102646B (en) 1926-02-25
GB225506A (en) 1925-06-04
NL19246C (en)
DE453294C (en) 1927-12-05
US1638536A (en) 1927-08-09

Similar Documents

Publication Publication Date Title
US1773772A (en) Harmonic suppressor
GB222829A (en) Improvements in and relating to pupinised lines for telephone transmission over longdistances
GB238512A (en) Improvements in loaded telephone and like lines
GB192692A (en) Improvements in or relating to the electric transmission of signals
GB534176A (en) Modifying networks for the transmission of high frequency currents
GB199345A (en) Improvements in or relating to telephone repeaters
GB262115A (en) Improvements in thermionic valve generators and circuit arrangements therefor
GB307493A (en) Improvements in and relating to coupling transformer arrangements for tele-communication systems
GB169724A (en) Improvements in the transmission of signals by electric oscillations which are guided or carried by line wires
GB180332A (en) Improvements in and relating to radio receiving systems
GB275595A (en) Improvements in or relating to high frequency telephony
GB353630A (en)
GB147447A (en) Improvements in or relating to the conveyance and distribution of high frequency electric currents
GB506790A (en) Improvements in or relating to frequency convertors and circuits therefor
GB207834A (en) Improvements in and relating to a method of balancing telephone phantom lines for reducing overhearing
GB161521A (en)
GB190154A (en) Improvements in and relating to earthing choking coils or voltage transformers for high voltages
GB176317A (en) Apparatus for overcoming the effects produced upon telegraph and telephone lines by the vicinity of single-phase currents
GB381453A (en) Improved method of reducing electrical disturbances in telephone and like lines
GB195273A (en) Improvements in telephone repeater systems
GB215381A (en) Improvements in means for protecting electrical apparatus from excess of tension or voltage
GB169175A (en) Improved method of protecting polyphase supply circuits on the occurrence of an earth connection
GB292144A (en) Filter for preventing distortion of telephone currents
GB281297A (en) Improvements relating to telephone systems
GB222852A (en) Improvements in or relating to balancing arrangements for use in telephonic and likeconnections