GB131113A - Improvements in Telephone Repeater Systems. - Google Patents

Improvements in Telephone Repeater Systems.

Info

Publication number
GB131113A
GB131113A GB1170918A GB1170918A GB131113A GB 131113 A GB131113 A GB 131113A GB 1170918 A GB1170918 A GB 1170918A GB 1170918 A GB1170918 A GB 1170918A GB 131113 A GB131113 A GB 131113A
Authority
GB
United Kingdom
Prior art keywords
circuit
transformer
valve
repeater
balancing
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
GB1170918A
Inventor
Charles Robinson
Ronald Martin Chamney
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 GB1170918A priority Critical patent/GB131113A/en
Publication of GB131113A publication Critical patent/GB131113A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/62—Two-way amplifiers
    • H03F3/64—Two-way amplifiers with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Amplifiers (AREA)
  • Dc Digital Transmission (AREA)

Abstract

131,113. Robinson, C., and Chamney, R. M. July 17, 1918. Telephonic repeaters.-A repeater is connected to a telephone circuit by means of a transformer C having its primary winding, preferably in series with a condenser, connected in shunt across the line and having its secondary winding connected to one side of the repeater, the other side of which is connected to a suitable. balancing-circuit D. In the valve repeate described, the grid circuit of the valve V is connected to the secondary of a differential transformer A, of which one side is connected to the balancing-circuit D and the other to the secondary of transformer C. The centre points of the differential transformer A are connected to one coil of a transformer B, the other winding of which is connected to the plate circuit of the valve. The amplified currents from the valve divide at the centre points of the differential transformer, part passing to line and part to the balancing-circuit. If the balance is correct, the amplified currents will have no effect upon the repeated. With a microphonic repeater, the differential transformer A may be replaced by a differential arrangement of inductances, resistances, or condensers
GB1170918A 1918-07-17 1918-07-17 Improvements in Telephone Repeater Systems. Expired GB131113A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1170918A GB131113A (en) 1918-07-17 1918-07-17 Improvements in Telephone Repeater Systems.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1170918A GB131113A (en) 1918-07-17 1918-07-17 Improvements in Telephone Repeater Systems.

Publications (1)

Publication Number Publication Date
GB131113A true GB131113A (en) 1919-08-21

Family

ID=32345141

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1170918A Expired GB131113A (en) 1918-07-17 1918-07-17 Improvements in Telephone Repeater Systems.

Country Status (1)

Country Link
GB (1) GB131113A (en)

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