FR2375758A1 - Self excited reference or calibration oscillator - has two phase shifting stages whose gains are constant and independent of oscillator frequency - Google Patents

Self excited reference or calibration oscillator - has two phase shifting stages whose gains are constant and independent of oscillator frequency

Info

Publication number
FR2375758A1
FR2375758A1 FR7609881A FR7609881A FR2375758A1 FR 2375758 A1 FR2375758 A1 FR 2375758A1 FR 7609881 A FR7609881 A FR 7609881A FR 7609881 A FR7609881 A FR 7609881A FR 2375758 A1 FR2375758 A1 FR 2375758A1
Authority
FR
France
Prior art keywords
constant
oscillator
phase shifting
independent
oscillator frequency
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.)
Granted
Application number
FR7609881A
Other languages
French (fr)
Other versions
FR2375758B1 (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.)
Chauvin Arnoux SAS
Original Assignee
Chauvin Arnoux SAS
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 Chauvin Arnoux SAS filed Critical Chauvin Arnoux SAS
Priority to FR7609881A priority Critical patent/FR2375758A1/en
Priority to DE19772714673 priority patent/DE2714673A1/en
Publication of FR2375758A1 publication Critical patent/FR2375758A1/en
Application granted granted Critical
Publication of FR2375758B1 publication Critical patent/FR2375758B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L5/00—Automatic control of voltage, current, or power
    • 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
    • H03B27/00—Generation of oscillations providing a plurality of outputs of the same frequency but differing in phase, other than merely two anti-phase outputs

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

The oscillator is in the form of a phase shifter delivering polyphase balanced voltages. It consists of a feed-back loop with one phase shifting stage with constant gain, a second phase shifting stage with constant gain and adjustable phase shift depending on the oscillator frequency, and a basisc amplifier whose phase shift is zero or a multiple of 360 deg. Its gain is constant, and the total transmission function is such that at the required oscillator frequency the total gain is one, and total phase shift is 0 or 180 deg. Gains of the two phase shifting stages (2, 3) are constant and independent from oscillator frequency. They are determined only by the circuit parameters and need not readjustment. Phase shift (psi) generated by the first phase shifting stage (2) is held constant by fine adjustment independent from frequency.
FR7609881A 1976-04-06 1976-04-06 Self excited reference or calibration oscillator - has two phase shifting stages whose gains are constant and independent of oscillator frequency Granted FR2375758A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7609881A FR2375758A1 (en) 1976-04-06 1976-04-06 Self excited reference or calibration oscillator - has two phase shifting stages whose gains are constant and independent of oscillator frequency
DE19772714673 DE2714673A1 (en) 1976-04-06 1977-04-01 Self excited reference or calibration oscillator - has two phase shifting stages whose gains are constant and independent of oscillator frequency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7609881A FR2375758A1 (en) 1976-04-06 1976-04-06 Self excited reference or calibration oscillator - has two phase shifting stages whose gains are constant and independent of oscillator frequency

Publications (2)

Publication Number Publication Date
FR2375758A1 true FR2375758A1 (en) 1978-07-21
FR2375758B1 FR2375758B1 (en) 1979-04-20

Family

ID=9171416

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7609881A Granted FR2375758A1 (en) 1976-04-06 1976-04-06 Self excited reference or calibration oscillator - has two phase shifting stages whose gains are constant and independent of oscillator frequency

Country Status (1)

Country Link
FR (1) FR2375758A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2017210A1 (en) * 1968-09-02 1970-05-22 Philips Nv
FR2071286A5 (en) * 1969-12-23 1971-09-17 Onera (Off Nat Aerospatiale)
FR2249485A1 (en) * 1973-10-25 1975-05-23 Radio Diffusion Tv Francaise Sinusoidal oscillator with low distortion level - has two active circuits in cascade and variable gain reactive loop

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2017210A1 (en) * 1968-09-02 1970-05-22 Philips Nv
FR2071286A5 (en) * 1969-12-23 1971-09-17 Onera (Off Nat Aerospatiale)
FR2249485A1 (en) * 1973-10-25 1975-05-23 Radio Diffusion Tv Francaise Sinusoidal oscillator with low distortion level - has two active circuits in cascade and variable gain reactive loop

Also Published As

Publication number Publication date
FR2375758B1 (en) 1979-04-20

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Legal Events

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ST Notification of lapse