GB541986A - Thermionic amplifier for coupling transmission circuits - Google Patents

Thermionic amplifier for coupling transmission circuits

Info

Publication number
GB541986A
GB541986A GB13398/40A GB1339840A GB541986A GB 541986 A GB541986 A GB 541986A GB 13398/40 A GB13398/40 A GB 13398/40A GB 1339840 A GB1339840 A GB 1339840A GB 541986 A GB541986 A GB 541986A
Authority
GB
United Kingdom
Prior art keywords
valves
input
transmission circuits
coupling transmission
network
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
GB13398/40A
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
Publication of GB541986A publication Critical patent/GB541986A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/32—Balance-unbalance networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor
    • H03F3/28—Push-pull amplifiers; Phase-splitters therefor with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

541,986. Preventing inductive disturbance. STANDARD TELEPHONES & CABLES, Ltd. Aug. 23, 1940, No. 13398. Convention date, Nov. 10, 1939. [Class 40 (iv] [Also in Group XL] A coupling between a balanced line 10 and an unbalanced line 11 comprises a pair of valves in push-pull having an impedance common to the two halves and providing degenerative feedback and a network in the input of one of the valves to increase the suppression of longitudinal currents. As shown, a dividing network R2, R3 is provided in the input to valve V<SP>1</SP>1 such as to balance out longitudinal currents and depending on the ratio of the mutual conductances of the valves and the value of the common cathode resistance R1. In this way lack of balance due to stray capacities at the higher frequencies may be corrected.
GB13398/40A 1939-11-10 1940-08-23 Thermionic amplifier for coupling transmission circuits Expired GB541986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US303778A US2226238A (en) 1939-11-10 1939-11-10 Coupling circuit

Publications (1)

Publication Number Publication Date
GB541986A true GB541986A (en) 1941-12-19

Family

ID=23173649

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13398/40A Expired GB541986A (en) 1939-11-10 1940-08-23 Thermionic amplifier for coupling transmission circuits

Country Status (6)

Country Link
US (1) US2226238A (en)
BE (1) BE442735A (en)
CH (1) CH250536A (en)
FR (1) FR867809A (en)
GB (1) GB541986A (en)
NL (1) NL66172C (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2803801A (en) * 1957-08-20 Wave analyzing apparatus
US2714137A (en) * 1944-10-12 1955-07-26 George S Dzwons Stabilized amplifier
US2533802A (en) * 1945-07-20 1950-12-12 Cornell Dubilier Electric Selective amplifier
US2624778A (en) * 1945-10-25 1953-01-06 Gilbert J Perlow Electronic fluxmeter and alternating current amplifier
US2521828A (en) * 1946-06-25 1950-09-12 Western Electric Co Coaxial line attenuator
US2687935A (en) * 1948-02-10 1954-08-31 Western Union Telegraph Co Signal amplifying system for electrically actuated recording devices
US2777214A (en) * 1951-05-11 1957-01-15 Henry P Birmingham Radar tracking demonstrating and training instrument
US2762949A (en) * 1951-07-27 1956-09-11 Du Mont Allen B Lab Inc Comparator circuit
US2892081A (en) * 1953-11-18 1959-06-23 Bell Telephone Labor Inc Instantaneous signal amplitude clipper
US2924779A (en) * 1954-03-26 1960-02-09 Philips Corp Stepfunction amplifier

Also Published As

Publication number Publication date
US2226238A (en) 1940-12-24
CH250536A (en) 1947-08-31
FR867809A (en) 1941-11-29
NL66172C (en) 1950-08-15
BE442735A (en) 1941-10-31

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