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GB425696A - Improvements in and relating to thermionic amplifiers - Google Patents

Improvements in and relating to thermionic amplifiers

Info

Publication number
GB425696A
GB425696A GB26294/33A GB2629433A GB425696A GB 425696 A GB425696 A GB 425696A GB 26294/33 A GB26294/33 A GB 26294/33A GB 2629433 A GB2629433 A GB 2629433A GB 425696 A GB425696 A GB 425696A
Authority
GB
United Kingdom
Prior art keywords
anode
valve
anode voltage
choke
effected
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
GB26294/33A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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
Priority to BE405225D priority Critical patent/BE405225A/xx
Priority to NL70830D priority patent/NL70830B/xx
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to GB26294/33A priority patent/GB425696A/en
Priority to FR769406D priority patent/FR769406A/en
Publication of GB425696A publication Critical patent/GB425696A/en
Priority to US275836A priority patent/US2266096A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/22—Two-pole devices for screw type base, e.g. for lamp
    • 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

425,696. Valve amplifying circuits. DICKER, S. G. S., 20, Holborn, London.- (Naamlooze Vennootschap Philips' Gloeilampenfabrieken; Emmasingel, Eindhoven, Holland) Sept. 23, 1933, Nos. 26294 and 27908. [Class 40 (v)] In a push-pull amplifier the working point on the characteristic is moved towards cut-off as the load increases so that each valve of the amplifier on weak signals amplifies both half waves of the signal but on strong signals each valve amplifies only the positive half waves. Fig. 1 shows an arrangement in which the change is effected by variation of bias produced by the anode current across resistance R. In a modification the change is effected by decrease of anode voltage due to a high impedance source, Fig. 3, (not shown). Fig. 5 shows an arrangement in which both the grid bias and anode voltage are changed. A choke S is provided in the filter for the rectified anode source and is stated to counteract in part the drop in anode voltage due to the ohmic resistance of the supply. The choke S is so designed that the core is near saturation for the average value of the direct current load. Reference has been directed by the Comptroller to Specification 408,269.
GB26294/33A 1933-09-23 1933-09-23 Improvements in and relating to thermionic amplifiers Expired GB425696A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE405225D BE405225A (en) 1933-09-23
NL70830D NL70830B (en) 1933-09-23
GB26294/33A GB425696A (en) 1933-09-23 1933-09-23 Improvements in and relating to thermionic amplifiers
FR769406D FR769406A (en) 1933-09-23 1934-02-27 Improvements made to electrical amplifier tubes
US275836A US2266096A (en) 1933-09-23 1939-05-26 Push-pull amplifier circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26294/33A GB425696A (en) 1933-09-23 1933-09-23 Improvements in and relating to thermionic amplifiers

Publications (1)

Publication Number Publication Date
GB425696A true GB425696A (en) 1935-03-20

Family

ID=10241353

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26294/33A Expired GB425696A (en) 1933-09-23 1933-09-23 Improvements in and relating to thermionic amplifiers

Country Status (5)

Country Link
US (1) US2266096A (en)
BE (1) BE405225A (en)
FR (1) FR769406A (en)
GB (1) GB425696A (en)
NL (1) NL70830B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4636740A (en) * 1984-04-23 1987-01-13 Kager Dennis L Control circuit for varying power output of push-pull tube amplifiers

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515916A (en) * 1950-07-18 Coded carrier signaling apparatus
US2590282A (en) * 1947-11-08 1952-03-25 Stromberg Carlson Co Variable impedance device
US2554279A (en) * 1948-03-13 1951-05-22 Westinghouse Electric Corp Radio apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4636740A (en) * 1984-04-23 1987-01-13 Kager Dennis L Control circuit for varying power output of push-pull tube amplifiers

Also Published As

Publication number Publication date
FR769406A (en) 1934-08-25
NL70830B (en)
BE405225A (en)
US2266096A (en) 1941-12-16

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