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GB501529A - Improvements relating to superheterodyne receivers - Google Patents

Improvements relating to superheterodyne receivers

Info

Publication number
GB501529A
GB501529A GB2367938A GB2367938A GB501529A GB 501529 A GB501529 A GB 501529A GB 2367938 A GB2367938 A GB 2367938A GB 2367938 A GB2367938 A GB 2367938A GB 501529 A GB501529 A GB 501529A
Authority
GB
United Kingdom
Prior art keywords
dynatron
deviation
local oscillator
superheterodyne
error detector
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
GB2367938A
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 GB2367938A priority Critical patent/GB501529A/en
Publication of GB501529A publication Critical patent/GB501529A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube

Landscapes

  • Circuits Of Receivers In General (AREA)
  • Superheterodyne Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

501,529. Valve circuits for wireless reception. STANDARD TELEPHONES & CABLES, Ltd., BARNARD, R. N., and KRAM, W. Aug. 30, 1937, No. 23679. [Class 40 (v)] In a superheterodyne wave translating system a dynatron local oscillator is employed and controlled in frequency by the potential applied to a control electrode. The Figure shows a superheterodyne receiver employing a dynatron V as local oscillator to the control grid of which a voltage is supplied from an error detector dependent on the deviation of the intermediate frequency so as to reduce the deviation. The control grid of the dynatron is biassed by resistance R in the' cathode lead which is shunted by byepass condenser C3. The error detector may be of the kind described in Specification 467,485.
GB2367938A 1937-08-30 1937-08-30 Improvements relating to superheterodyne receivers Expired GB501529A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2367938A GB501529A (en) 1937-08-30 1937-08-30 Improvements relating to superheterodyne receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2367938A GB501529A (en) 1937-08-30 1937-08-30 Improvements relating to superheterodyne receivers

Publications (1)

Publication Number Publication Date
GB501529A true GB501529A (en) 1939-02-28

Family

ID=10199509

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2367938A Expired GB501529A (en) 1937-08-30 1937-08-30 Improvements relating to superheterodyne receivers

Country Status (1)

Country Link
GB (1) GB501529A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3311954A (en) * 1963-11-08 1967-04-04 Osborn Mfg Co Shockless jolt molding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3311954A (en) * 1963-11-08 1967-04-04 Osborn Mfg Co Shockless jolt molding machine

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