GB748746A - Improvements in or relating to rectifier switch circuits - Google Patents

Improvements in or relating to rectifier switch circuits

Info

Publication number
GB748746A
GB748746A GB2726654A GB2726654A GB748746A GB 748746 A GB748746 A GB 748746A GB 2726654 A GB2726654 A GB 2726654A GB 2726654 A GB2726654 A GB 2726654A GB 748746 A GB748746 A GB 748746A
Authority
GB
United Kingdom
Prior art keywords
input
blocked
terminal
switch circuits
rectifiers
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
GB2726654A
Inventor
Adrian Michael Bennett
Ernest Ronald Cockbain
David Salsbury Thomas
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2726654A priority Critical patent/GB748746A/en
Publication of GB748746A publication Critical patent/GB748746A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/521—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using semiconductors in the switching stages
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Filters And Equalizers (AREA)

Abstract

748,746. Alternate use of channels. STANDARD TELEPHONES & CABLES, Ltd. Sept. 21, 1954, No. 27266/54. Class 40 (4). [Also in Group XL (c)] The Figure shows a rectifier switching circuit in which in dependence upon the polarity of a D.C. control voltage applied across terminals 7, 8 a transmission line connected to coaxial jack 5 is switched either to that connected across input 4 or input 6 respectively. When terminal 7 is positive with respect to terminal 8 rectifiers 11-14 and 23-26 are conductive and rectifiers 19-22 and 15-18 blocked so that input 4 is connected to output 5 and the path from input 6 is blocked. When terminal 8 is positive with respect to 7 input 6 is connected to output 5 and the path from input 4 is blocked. If transformers 1, 2, 3 are designed to give a correct impedance match to their respective transmission lines this will not be appreciably upset by the switching circuits 9 and 10. The transformers should preferably have a high step-up ratio as seen from the transmission lines so that a large difference is obtained in the attenuation of the switch circuits 9, 10 in the blocked and unblocked conditions.
GB2726654A 1954-09-21 1954-09-21 Improvements in or relating to rectifier switch circuits Expired GB748746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2726654A GB748746A (en) 1954-09-21 1954-09-21 Improvements in or relating to rectifier switch circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2726654A GB748746A (en) 1954-09-21 1954-09-21 Improvements in or relating to rectifier switch circuits

Publications (1)

Publication Number Publication Date
GB748746A true GB748746A (en) 1956-05-09

Family

ID=10256789

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2726654A Expired GB748746A (en) 1954-09-21 1954-09-21 Improvements in or relating to rectifier switch circuits

Country Status (1)

Country Link
GB (1) GB748746A (en)

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