GB667284A - Vacuum tube oscillators - Google Patents

Vacuum tube oscillators

Info

Publication number
GB667284A
GB667284A GB299449A GB299449A GB667284A GB 667284 A GB667284 A GB 667284A GB 299449 A GB299449 A GB 299449A GB 299449 A GB299449 A GB 299449A GB 667284 A GB667284 A GB 667284A
Authority
GB
United Kingdom
Prior art keywords
frequency
tank circuit
oscillator
valves
circuits
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
GB299449A
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.)
Space Systems Loral LLC
Original Assignee
Philco Ford 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
Application filed by Philco Ford Corp filed Critical Philco Ford Corp
Priority to GB299449A priority Critical patent/GB667284A/en
Publication of GB667284A publication Critical patent/GB667284A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D11/00—Super-regenerative demodulator circuits
    • H03D11/02—Super-regenerative demodulator circuits for amplitude-modulated oscillations

Landscapes

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

Abstract

667,284. Frequency modulation. MORLE, C. W. (philco Corporation). Feb. 3, 1949, No. 2994/49. Class 40 (v). An oscillator adapted to oscillate at two different frequencies comprises two valves 1, 2, a common tank circuit having a tapped inductance 4 and condensers 5, 6 forming Hartley and Colpitts oscillator circuits with valves 1 and 2 respectively, and resistors 12, 13 in the cathode circuits of the valves acting to alter the resonant frequency of the tank circuit and oscillation frequency when the respective valve is conducting and the other cut off. The tank circuit may be earthed as shown at one side. The oscillators may be used as super-regenerative amplifiers and detectors of frequency modulated signals derived from an aerial 3 inductively coupled to the tank circuit, each oscillator being quenched alternately by a quench input from an oscillator 16 applied in push-pull to grid resistors 7b, 8b of the valves, the resonant frequency of the tank circuit lying alternately on opposite sides of the mean frequency of the signal. The detected signal is derived in push-pull from the anodes of 27, circuits 28, 29 by-passing quench frequency. A resonant choke 11 provides a low impedance D.C. path in the cathode circuit of the Colpitts oscillator. U.S.A. Specification 2,351,193 is referred to.
GB299449A 1949-02-03 1949-02-03 Vacuum tube oscillators Expired GB667284A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB299449A GB667284A (en) 1949-02-03 1949-02-03 Vacuum tube oscillators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB299449A GB667284A (en) 1949-02-03 1949-02-03 Vacuum tube oscillators

Publications (1)

Publication Number Publication Date
GB667284A true GB667284A (en) 1952-02-27

Family

ID=9749925

Family Applications (1)

Application Number Title Priority Date Filing Date
GB299449A Expired GB667284A (en) 1949-02-03 1949-02-03 Vacuum tube oscillators

Country Status (1)

Country Link
GB (1) GB667284A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293562A (en) * 1965-05-17 1966-12-20 Stromberg Carlson Parallel redundant crystal oscillator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293562A (en) * 1965-05-17 1966-12-20 Stromberg Carlson Parallel redundant crystal oscillator

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