JPS57210731A - Frequency tracking device - Google Patents

Frequency tracking device

Info

Publication number
JPS57210731A
JPS57210731A JP56093987A JP9398781A JPS57210731A JP S57210731 A JPS57210731 A JP S57210731A JP 56093987 A JP56093987 A JP 56093987A JP 9398781 A JP9398781 A JP 9398781A JP S57210731 A JPS57210731 A JP S57210731A
Authority
JP
Japan
Prior art keywords
signal
section
feedback
frequency tracking
tracking device
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.)
Pending
Application number
JP56093987A
Other languages
Japanese (ja)
Inventor
Hidekazu Ando
Akira Maue
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.)
SPC Electronics Corp
Shimada Rika Kogyo KK
Original Assignee
SPC Electronics Corp
Shimada Rika Kogyo KK
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 SPC Electronics Corp, Shimada Rika Kogyo KK filed Critical SPC Electronics Corp
Priority to JP56093987A priority Critical patent/JPS57210731A/en
Publication of JPS57210731A publication Critical patent/JPS57210731A/en
Pending 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
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop

Landscapes

  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To perform stable frequency tracking, by outputting a signal from a signal generator through changing over the signal into a feedback signal, when the feedback signal from a feedback detection section goes to a prescribed level or more. CONSTITUTION:A signal generated at a signal generator 1 is applied to an Si transistor (TR)3, the TR3 is switched and the signal is applied to a signal amplifying section (a). The signal at the section (a) is applied to an ultrasonic wave oscillator through a feedback signal detection (b), a part of the signal is fed back to a frequency tracking device (d) and applied to a coupling transformer 10. When this signal goes to a prescribed level or more, a signal from the section (b) is applied to the transformer 10 through a resonance coil 12 and a resonance capacitor, a part of the signal is amplified at a TR11 and applied to the section (a). The amplified signal is applied to the section (b) and the ultrasonic wave oscillator, and a part of the signal is fed back to the device (d).
JP56093987A 1981-06-19 1981-06-19 Frequency tracking device Pending JPS57210731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56093987A JPS57210731A (en) 1981-06-19 1981-06-19 Frequency tracking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56093987A JPS57210731A (en) 1981-06-19 1981-06-19 Frequency tracking device

Publications (1)

Publication Number Publication Date
JPS57210731A true JPS57210731A (en) 1982-12-24

Family

ID=14097746

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56093987A Pending JPS57210731A (en) 1981-06-19 1981-06-19 Frequency tracking device

Country Status (1)

Country Link
JP (1) JPS57210731A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52137958A (en) * 1976-05-13 1977-11-17 Japan Radio Co Ltd Digital pll improving proximity spurious
JPS52150008A (en) * 1976-06-09 1977-12-13 Hiroshi Shimizu Automatic frequency tracing ultrasonic wave oscillator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52137958A (en) * 1976-05-13 1977-11-17 Japan Radio Co Ltd Digital pll improving proximity spurious
JPS52150008A (en) * 1976-06-09 1977-12-13 Hiroshi Shimizu Automatic frequency tracing ultrasonic wave oscillator

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