GB863706A - Improvements in or relating to telephone sub-sets - Google Patents

Improvements in or relating to telephone sub-sets

Info

Publication number
GB863706A
GB863706A GB2487457A GB2487457A GB863706A GB 863706 A GB863706 A GB 863706A GB 2487457 A GB2487457 A GB 2487457A GB 2487457 A GB2487457 A GB 2487457A GB 863706 A GB863706 A GB 863706A
Authority
GB
United Kingdom
Prior art keywords
aug
receiver
relating
sets
line terminals
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
GB2487457A
Inventor
Anthony Crisp Beadle
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 GB2487457A priority Critical patent/GB863706A/en
Publication of GB863706A publication Critical patent/GB863706A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

863,706. Substation circuits. STANDARD TELEPHONES & CABLES Ltd. Aug. 1, 1958 [Aug. 7, 1957], No. 24874/57. Drawings to Specification. Class 40 (4). A single non-linear resistance element is placed directly in shunt, without the use of an intervening transformer, with the transmitter, receiver, line terminals, or like-balancing network, the resistance of the non-linear element being dependent solely upon the voltage developed across a controlling resistor by the unidirectional transmitter-energizing current received at the line terminals. In the case in which the receiver is shunted, the circuit is the same as that shown in Figs. 2 and 3 of Specification 863,642 except that the arm of the bridge containing non-linear element 10 is omitted. Specification 706,785 also is referred to.
GB2487457A 1957-08-07 1957-08-07 Improvements in or relating to telephone sub-sets Expired GB863706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2487457A GB863706A (en) 1957-08-07 1957-08-07 Improvements in or relating to telephone sub-sets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2487457A GB863706A (en) 1957-08-07 1957-08-07 Improvements in or relating to telephone sub-sets

Publications (1)

Publication Number Publication Date
GB863706A true GB863706A (en) 1961-03-22

Family

ID=10218623

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2487457A Expired GB863706A (en) 1957-08-07 1957-08-07 Improvements in or relating to telephone sub-sets

Country Status (1)

Country Link
GB (1) GB863706A (en)

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