GB485990A - Improvements in or relating to amplifiers - Google Patents

Improvements in or relating to amplifiers

Info

Publication number
GB485990A
GB485990A GB32154/37A GB3215437A GB485990A GB 485990 A GB485990 A GB 485990A GB 32154/37 A GB32154/37 A GB 32154/37A GB 3215437 A GB3215437 A GB 3215437A GB 485990 A GB485990 A GB 485990A
Authority
GB
United Kingdom
Prior art keywords
amplified
frequencies
valve
component
range
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
GB32154/37A
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.)
Philco Radio and Television Corp
Original Assignee
Philco Radio and Television Corp
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 claimed from US51324A external-priority patent/US2171536A/en
Application filed by Philco Radio and Television Corp filed Critical Philco Radio and Television Corp
Publication of GB485990A publication Critical patent/GB485990A/en
Priority claimed from US282935A external-priority patent/US2252613A/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
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/36—DC amplifiers in which all stages are DC-coupled with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

485,990. Valve amplifying circuits. PHILCO RADIO & TELEVISION CORPORATION. Nov. 23, 1936, No. 32154/37. Convention date, Nov. 23, 1935. Divided out of 485,924. [Class 40 (v)] Component frequencies of one range and component frequencies of a complementary range are obtained by applying a signal E3 to impedances R2, R3, C2, C3, the two components are amplified separately, and the amplified signals are combined in an output circuit R4. The lower frequencies, including the D.C. component, are derived from the condenser C3 and amplified in a valve V4. The higher frequencies are derived from the resistance R2 and are amplified in a valve V3 with a uniform gain over the higher frequency range, Fig. 3 (not shown). Each amplifier may include a plurality of stages, Fig. 2 (not shown).
GB32154/37A 1935-11-23 1936-11-23 Improvements in or relating to amplifiers Expired GB485990A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US51324A US2171536A (en) 1935-11-23 1935-11-23 Electrical system
US282935A US2252613A (en) 1935-11-23 1939-07-05 Signal transmission system
US282934A US2252612A (en) 1935-11-23 1939-07-05 Direct and alternating current amplifier

Publications (1)

Publication Number Publication Date
GB485990A true GB485990A (en) 1938-05-23

Family

ID=27367939

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32154/37A Expired GB485990A (en) 1935-11-23 1936-11-23 Improvements in or relating to amplifiers

Country Status (2)

Country Link
US (1) US2252612A (en)
GB (1) GB485990A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434405A (en) * 1944-06-29 1948-01-13 Farnsworth Res Corp Television background control system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778883A (en) * 1953-02-13 1957-01-22 British Thomson Houston Co Ltd Parallel amplifying system
US2846523A (en) * 1954-10-29 1958-08-05 Minard A Leavitt Square wave amplifier
US2891117A (en) * 1955-12-27 1959-06-16 American Telephone & Telegraph Wave translating system
US2935696A (en) * 1958-04-23 1960-05-03 Du Mont Allen B Lab Inc Wide-band amplifiers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434405A (en) * 1944-06-29 1948-01-13 Farnsworth Res Corp Television background control system

Also Published As

Publication number Publication date
US2252612A (en) 1941-08-12

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