GB513679A - Improvements in or relating to electrical oscillation generators - Google Patents

Improvements in or relating to electrical oscillation generators

Info

Publication number
GB513679A
GB513679A GB5004/38A GB500438A GB513679A GB 513679 A GB513679 A GB 513679A GB 5004/38 A GB5004/38 A GB 5004/38A GB 500438 A GB500438 A GB 500438A GB 513679 A GB513679 A GB 513679A
Authority
GB
United Kingdom
Prior art keywords
circuit
oscillator
inductance
anode
valve
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
GB5004/38A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB5004/38A priority Critical patent/GB513679A/en
Priority to GB23786/39A priority patent/GB523648A/en
Priority to US256413A priority patent/US2272851A/en
Publication of GB513679A publication Critical patent/GB513679A/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
    • H03B5/18—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
    • H03B5/1817—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator
    • H03B5/1835—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator the active element in the amplifier being a vacuum tube
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J9/00—Remote-control of tuned circuits; Combined remote-control of tuning and other functions, e.g. brightness, amplification
    • H03J9/002—Remote-control of tuned circuits; Combined remote-control of tuning and other functions, e.g. brightness, amplification comprising one or more tuning stages separated from the rest of a receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

513,679. Thermionic valve circuits ; wireless receivers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and RAMSAY, J. F. Feb. 17, 1938, No. 5004. [Class 40 (v)] A remotely-controlled oscillator which may be the local oscillator of a superheterodyne receiver comprises a variable tuning circuit at the remote point associated with the grid circuit of the valve over a length of highfrequency cable the capacity of which forms an element in the tuned circuit. The Figure shows an arrangement in which the grid circuit of the oscillator 1 comprises inductance 8, variable capacity 9, and the capacity of line 16 so that the input to the valve is effectively capacitatively tapped down on its tuned circuit. The grid inductance 8 is coupled to the anode inductance 3<1> connected to the anode by highfrequency cable 14. The anode circuit is preferably resonant at or near the upper frequency of the tuning range. Variable inductance tuning may be used and in place of a single valve a number in cascade may be used with the feedback between output and input. When operation at high frequencies is required the nature of the impedance offered by the high frequency cable will change over the operating range. In this case as described in Specification 493,862 the components may be so dimensioned that the oscillator operates as a resonant line oscillator and the anode circuit be resonanted at or near one end of the frequency range for a mode of oscillation to ensure oscillation on that mode.
GB5004/38A 1938-02-17 1938-02-17 Improvements in or relating to electrical oscillation generators Expired GB513679A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB5004/38A GB513679A (en) 1938-02-17 1938-02-17 Improvements in or relating to electrical oscillation generators
GB23786/39A GB523648A (en) 1938-02-17 1939-01-10 Improvements in or relating to electrical oscillation generators
US256413A US2272851A (en) 1938-02-17 1939-02-15 Electrical oscillation generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5004/38A GB513679A (en) 1938-02-17 1938-02-17 Improvements in or relating to electrical oscillation generators

Publications (1)

Publication Number Publication Date
GB513679A true GB513679A (en) 1939-10-19

Family

ID=9787912

Family Applications (2)

Application Number Title Priority Date Filing Date
GB5004/38A Expired GB513679A (en) 1938-02-17 1938-02-17 Improvements in or relating to electrical oscillation generators
GB23786/39A Expired GB523648A (en) 1938-02-17 1939-01-10 Improvements in or relating to electrical oscillation generators

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB23786/39A Expired GB523648A (en) 1938-02-17 1939-01-10 Improvements in or relating to electrical oscillation generators

Country Status (2)

Country Link
US (1) US2272851A (en)
GB (2) GB513679A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429085A (en) * 1943-06-25 1947-10-14 Rca Corp Condenser structure
US2540137A (en) * 1943-12-14 1951-02-06 Irving H Page Wide range tuning circuit
US2439286A (en) * 1944-02-16 1948-04-06 Rca Corp Oscillation generator
US2483189A (en) * 1944-09-13 1949-09-27 Hartford Nat Bank & Trust Comp Transmission line oscillator
US2505022A (en) * 1945-07-20 1950-04-25 Standard Telephones Cables Ltd Two-channel oscillator
US2717313A (en) * 1951-05-29 1955-09-06 Rca Corp Tunable circuit structure
US2728853A (en) * 1952-11-20 1955-12-27 Rca Corp Oscillator circuits
US2772393A (en) * 1952-12-23 1956-11-27 California Research Corp Water-in-oil detector
US2925477A (en) * 1957-09-12 1960-02-16 Radiation Inc Radio frequency amplifier
FR1337423A (en) * 1962-07-31 1963-09-13 Csf Improvements to monochromatic light sources of constant intensity
US3181082A (en) * 1962-10-08 1965-04-27 Collins Radio Co Oscillator having remotely situated crystal connected to remaining circuitry by transmission lines substantally n/2 wavelengths with respect to said crystal frequency

Also Published As

Publication number Publication date
US2272851A (en) 1942-02-10
GB523648A (en) 1940-07-18

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