GB880365A - Improvements in and relating to electrical oscillator circuits - Google Patents

Improvements in and relating to electrical oscillator circuits

Info

Publication number
GB880365A
GB880365A GB26704/59A GB2670459A GB880365A GB 880365 A GB880365 A GB 880365A GB 26704/59 A GB26704/59 A GB 26704/59A GB 2670459 A GB2670459 A GB 2670459A GB 880365 A GB880365 A GB 880365A
Authority
GB
United Kingdom
Prior art keywords
oscillator
frequency
circuit
collector circuit
transistor
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
GB26704/59A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB880365A publication Critical patent/GB880365A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/12—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

880,365. Transistor frequency changing circuits. GENERAL MOTORS CORPORATION. Aug. 5, 1959 [Sept. 4, 1958], No. 26704/59. Class 40(6). In a frequency changer, particularly for a radio receiver, the input signals are fed to the base of transistor 4, the local oscillator tuned circuit such as 44, 46 is connected to the emitter circuit, the intermediate frequency output is taken from the collector circuit and degenerative feedback at oscillator frequency is provided between the collector circuit and the base in order to minimise the variation of amplitude of output over the frequency band. Fig. 1 (not shown) relates to a similar arrangement using a permeability tuned oscillator coil in series with the collector circuit and regenerative oscillator feedback is taken from a tapping between two capacitors in parallel with the oscillator coil.
GB26704/59A 1958-09-04 1959-08-05 Improvements in and relating to electrical oscillator circuits Expired GB880365A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US880365XA 1958-09-04 1958-09-04

Publications (1)

Publication Number Publication Date
GB880365A true GB880365A (en) 1961-10-18

Family

ID=22208955

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26704/59A Expired GB880365A (en) 1958-09-04 1959-08-05 Improvements in and relating to electrical oscillator circuits

Country Status (3)

Country Link
DE (1) DE1143243B (en)
FR (1) FR1234571A (en)
GB (1) GB880365A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2764674A (en) * 1955-03-17 1956-09-25 Rca Corp Transistor receiver oscillator injection using capacitance between stators of gang capacitor

Also Published As

Publication number Publication date
FR1234571A (en) 1960-10-18
DE1143243B (en) 1963-02-07

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