GB879650A - Improvements in or relating to circuits for controlling the resonance frequency of an oscillatory circuit - Google Patents

Improvements in or relating to circuits for controlling the resonance frequency of an oscillatory circuit

Info

Publication number
GB879650A
GB879650A GB30423/57A GB3042357A GB879650A GB 879650 A GB879650 A GB 879650A GB 30423/57 A GB30423/57 A GB 30423/57A GB 3042357 A GB3042357 A GB 3042357A GB 879650 A GB879650 A GB 879650A
Authority
GB
United Kingdom
Prior art keywords
collector
transistor
emitter
modulation
circuit
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
GB30423/57A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB879650A publication Critical patent/GB879650A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • 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
    • H03B5/12—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 semiconductor device
    • H03B5/1203—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 semiconductor device the amplifier being a single transistor
    • 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
    • H03B5/12—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 semiconductor device
    • H03B5/1231—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 semiconductor device the amplifier comprising one or more bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/36—Angle modulation by means of light-sensitive element

Landscapes

  • Networks Using Active Elements (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
GB30423/57A 1956-10-02 1957-09-27 Improvements in or relating to circuits for controlling the resonance frequency of an oscillatory circuit Expired GB879650A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL211091 1956-10-02
NL216901 1957-05-02

Publications (1)

Publication Number Publication Date
GB879650A true GB879650A (en) 1961-10-11

Family

ID=26641609

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30423/57A Expired GB879650A (en) 1956-10-02 1957-09-27 Improvements in or relating to circuits for controlling the resonance frequency of an oscillatory circuit

Country Status (6)

Country Link
US (1) US2951995A (US07922777-20110412-C00004.png)
BE (1) BE561232A (US07922777-20110412-C00004.png)
DE (1) DE1070694B (US07922777-20110412-C00004.png)
FR (1) FR1183642A (US07922777-20110412-C00004.png)
GB (1) GB879650A (US07922777-20110412-C00004.png)
NL (4) NL211091A (US07922777-20110412-C00004.png)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3141140A (en) * 1959-05-20 1964-07-14 Acoustica Associates Inc A. c. operated transistor oscillator or amplifier circuits
NL107322C (US07922777-20110412-C00004.png) * 1959-05-23
US3168651A (en) * 1960-06-13 1965-02-02 Ericsson Telefon Ab L M Arrangement for frequency control
US3207989A (en) * 1961-01-24 1965-09-21 Texas Instruments Inc Automatic frequency control system
US3214661A (en) * 1961-10-10 1965-10-26 Westinghouse Canada Ltd Line tracers
US3319179A (en) * 1966-03-11 1967-05-09 Zenith Radio Corp Automatic frequency controlled signal generator
US3393379A (en) * 1966-11-30 1968-07-16 Rca Corp Frequency control circuit utilizing switching means
CH510908A (fr) * 1968-12-27 1971-09-15 Longines Montres Comp D Pièce d'horlogerie électronique, comportant un système oscillant
JPS53111264A (en) * 1977-03-10 1978-09-28 Sony Corp Oscillator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666902A (en) * 1950-06-30 1954-01-19 Rca Corp Frequency modulator transistor circuits
US2778956A (en) * 1952-10-31 1957-01-22 Bell Telephone Labor Inc Semiconductor signal translating devices
US2805397A (en) * 1952-10-31 1957-09-03 Bell Telephone Labor Inc Semiconductor signal translating devices
NL187545C (US07922777-20110412-C00004.png) * 1953-08-10
FR1131428A (fr) * 1953-12-04 1957-02-21 Philips Nv Montage équivalent à une résistance électrique variable
NL196121A (US07922777-20110412-C00004.png) * 1954-03-31
US2764687A (en) * 1954-07-19 1956-09-25 Hoffman Electronics Corp Transistor automatic frequency control

Also Published As

Publication number Publication date
DE1070694B (US07922777-20110412-C00004.png)
NL216901A (US07922777-20110412-C00004.png)
NL104634C (US07922777-20110412-C00004.png)
NL111119C (US07922777-20110412-C00004.png)
NL211091A (US07922777-20110412-C00004.png)
FR1183642A (fr) 1959-07-09
US2951995A (en) 1960-09-06
BE561232A (US07922777-20110412-C00004.png)

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