GB646475A - Improvements in or relating to circuit arrangements in which high-frequency oscillations are generated or amplified - Google Patents

Improvements in or relating to circuit arrangements in which high-frequency oscillations are generated or amplified

Info

Publication number
GB646475A
GB646475A GB4242/48A GB424248A GB646475A GB 646475 A GB646475 A GB 646475A GB 4242/48 A GB4242/48 A GB 4242/48A GB 424248 A GB424248 A GB 424248A GB 646475 A GB646475 A GB 646475A
Authority
GB
United Kingdom
Prior art keywords
frequency
inductance
condenser
circuit
amplified
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
GB4242/48A
Other languages
English (en)
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
Philips Electronics 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
Application filed by Philips Gloeilampenfabrieken NV, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB646475A publication Critical patent/GB646475A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00Continuous tuning
    • H03J3/24Continuous tuning of more than one resonant circuit simultaneously, the circuits being tuned to substantially the same frequency, e.g. for single-knob tuning
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03BGENERATION 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
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10Generation 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
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/242Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
GB4242/48A 1947-02-17 1948-02-13 Improvements in or relating to circuit arrangements in which high-frequency oscillations are generated or amplified Expired GB646475A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL130436A NL75980C (en, 2012) 1947-02-17 1947-02-17

Publications (1)

Publication Number Publication Date
GB646475A true GB646475A (en) 1950-11-22

Family

ID=19791938

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4242/48A Expired GB646475A (en) 1947-02-17 1948-02-13 Improvements in or relating to circuit arrangements in which high-frequency oscillations are generated or amplified

Country Status (4)

Country Link
DE (1) DE806554C (en, 2012)
FR (1) FR961171A (en, 2012)
GB (1) GB646475A (en, 2012)
NL (1) NL75980C (en, 2012)

Also Published As

Publication number Publication date
DE806554C (de) 1951-06-14
FR961171A (en, 2012) 1950-05-06
NL75980C (en, 2012) 1953-12-15

Similar Documents

Publication Publication Date Title
GB748668A (en) Improvements in or relating to amplifier circuit arrangements
GB601164A (en) Frequency control of oscillation generators
GB523648A (en) Improvements in or relating to electrical oscillation generators
GB646475A (en) Improvements in or relating to circuit arrangements in which high-frequency oscillations are generated or amplified
GB763443A (en) Improvements in or relating to transistor circuits for amplifying electrical signals
GB683939A (en) Improvements in or relating to superheterodyne radio-receivers
US3775698A (en) A circuit for generating a high power rf signal having low am and fm noise components
GB617647A (en) Improvements in or relating to frequency-changing circuits
GB718959A (en) Improvements in or relating to circuit-arrangements for the frequency changing of high-frequency oscillations
GB628901A (en) Improvements in or relating to frequency determining circuits for high frequency oscillators
GB754713A (en) Improvements in or relating to transistor oscillator circuits
GB310043A (en) Improvements in or relating to high frequency thermionic generators
GB621694A (en) Improvements in or relating to frequency discriminator circuit arrangements
US2479438A (en) Arrangement for increasing the tuning range of inductance tuned resonance circuits
GB552486A (en) Improvements in or relating to mixing circuits for use in superheterodyne receivers
GB639784A (en) Improvements relating to superheterodyne radio receivers
GB550171A (en) Circuit arrangements comprising at least one amplifier for amplitude modulated oscillations
GB731592A (en) Improvements in or relating to circuits for producing frequency or phase modulation
GB585365A (en) An improvement in the tuning circuits of variable-frequency oscillators
GB655833A (en) Improvements in or relating to thermionic valve circuits
GB606821A (en) Improvements in selective coupling circuits for use at radio frequencies
GB700849A (en) Improvements in or relating to circuit-arrangements for frequency changing of high-frequency oscillations
GB494884A (en) Improvements in or relating to electrical oscillation generators
GB499088A (en) Improvements in or relating to electrical oscillators
GB640267A (en) Improved signal-translating stage for radio signalling