GB674333A - Improvements in transformers and networks for tapping or branching cables carrying two or more frequency bands - Google Patents

Improvements in transformers and networks for tapping or branching cables carrying two or more frequency bands

Info

Publication number
GB674333A
GB674333A GB1794649A GB1794649A GB674333A GB 674333 A GB674333 A GB 674333A GB 1794649 A GB1794649 A GB 1794649A GB 1794649 A GB1794649 A GB 1794649A GB 674333 A GB674333 A GB 674333A
Authority
GB
United Kingdom
Prior art keywords
low
tapping
impedance
cable
frequency
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
GB1794649A
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.)
Pye Electronic Products Ltd
Original Assignee
Pye 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 Pye Ltd filed Critical Pye Ltd
Priority to GB1794649A priority Critical patent/GB674333A/en
Publication of GB674333A publication Critical patent/GB674333A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/10—Intermediate station arrangements, e.g. for branching, for tapping-off

Landscapes

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

Abstract

674,333. Transmitting news &c. FULLER, D. Q., and PYE, Ltd. July 5, 1950 [July 7, 1949], No. 17946/49. Class 40 (iv). [Also in Group XL (b)] An arrangement for tapping or branching a cable carrying signals in a number of frequency bands comprises a transformer having a primary L1 connected to the main cable and a secondary L2 connected to the tapping cable, and impedance means in series with both primary and secondary, and having a low impedance in one of the frequency bands and a high impedance in another of the bands. As shown, the main cable carries a highfrequency band and a low-frequency band. Impedance C is a condenser and is therefore low in the high-frequency band, thus permitting the transformer to transform high-frequency signals into the branch cable. The impedance C is high in the low-frequency band and thus the low-frequency signals pass untransformed into the tapping cable through the inductances which are low at low frequencies. The low-frequency signals may be transformed by using a choke as impedance C. By-passing condensers are then fitted to the inductances L1 and L2 so that the high-frequency energy can reach the tapping cable. By dividing the secondary L2 connection can be made to several tapping cables. The cables may be coaxial lines and may be carrying sound and television programmes.
GB1794649A 1949-07-07 1949-07-07 Improvements in transformers and networks for tapping or branching cables carrying two or more frequency bands Expired GB674333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1794649A GB674333A (en) 1949-07-07 1949-07-07 Improvements in transformers and networks for tapping or branching cables carrying two or more frequency bands

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1794649A GB674333A (en) 1949-07-07 1949-07-07 Improvements in transformers and networks for tapping or branching cables carrying two or more frequency bands

Publications (1)

Publication Number Publication Date
GB674333A true GB674333A (en) 1952-06-25

Family

ID=10104007

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1794649A Expired GB674333A (en) 1949-07-07 1949-07-07 Improvements in transformers and networks for tapping or branching cables carrying two or more frequency bands

Country Status (1)

Country Link
GB (1) GB674333A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181615A (en) * 1985-10-15 1987-04-23 Gen Instr Coupling arrangements for coaxial cables

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181615A (en) * 1985-10-15 1987-04-23 Gen Instr Coupling arrangements for coaxial cables
GB2181615B (en) * 1985-10-15 1989-09-27 Gen Instr Coupling arrangements for coaxial cables

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