GB929183A - Improvements in or relating to electric oscillators - Google Patents

Improvements in or relating to electric oscillators

Info

Publication number
GB929183A
GB929183A GB225460A GB225460A GB929183A GB 929183 A GB929183 A GB 929183A GB 225460 A GB225460 A GB 225460A GB 225460 A GB225460 A GB 225460A GB 929183 A GB929183 A GB 929183A
Authority
GB
United Kingdom
Prior art keywords
oscillator
output
transistor
amplitude
jan
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
GB225460A
Inventor
Allan David Berry
John Anthony Cayzer
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB225460A priority Critical patent/GB929183A/en
Publication of GB929183A publication Critical patent/GB929183A/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
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/40—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a magnetostrictive resonator

Abstract

929,183. Automatic amplitude control. GENERAL ELECTRIC CO. Ltd. Jan. 20, 1961 [Jan. 21, 1960], No. 2254/60. Addition to 873,786. Drawings to Specification. Class 38 (4). [Also in Group XL (c)] An amplitude-modulated oscillator as in the parent Specification has means to limit the oscillator output, comprising a second feedback path connected through an amplitude detector to the base of a transistor having an emitter circuit common to one of the amplifier transistors of the oscillator but normally cut off except when the second feedback exceeds a certain value whereupon it becomes conductive to reduce the emitter voltage and gain of the associated transistor in correspondence with any rise in output of the oscillator. The second feedback path may also, through a further detector, bias conductively the modulator transistor acting as a switching impedance for the unidirectional modulation input to the oscillator. The output may be rectified so that the circuit is a D.C. amplifier.
GB225460A 1960-01-21 1960-01-21 Improvements in or relating to electric oscillators Expired GB929183A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB225460A GB929183A (en) 1960-01-21 1960-01-21 Improvements in or relating to electric oscillators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB225460A GB929183A (en) 1960-01-21 1960-01-21 Improvements in or relating to electric oscillators

Publications (1)

Publication Number Publication Date
GB929183A true GB929183A (en) 1963-06-19

Family

ID=9736318

Family Applications (1)

Application Number Title Priority Date Filing Date
GB225460A Expired GB929183A (en) 1960-01-21 1960-01-21 Improvements in or relating to electric oscillators

Country Status (1)

Country Link
GB (1) GB929183A (en)

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