JPS5652908A - Oscillation frequency adjusting device - Google Patents

Oscillation frequency adjusting device

Info

Publication number
JPS5652908A
JPS5652908A JP12854779A JP12854779A JPS5652908A JP S5652908 A JPS5652908 A JP S5652908A JP 12854779 A JP12854779 A JP 12854779A JP 12854779 A JP12854779 A JP 12854779A JP S5652908 A JPS5652908 A JP S5652908A
Authority
JP
Japan
Prior art keywords
load capacity
oscillation frequency
condenser
adjusting device
frequency adjusting
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
JP12854779A
Other languages
Japanese (ja)
Other versions
JPS6346601B2 (en
Inventor
Tetsuo Konno
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.)
Seikosha KK
Original Assignee
Seikosha 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 Seikosha KK filed Critical Seikosha KK
Priority to JP12854779A priority Critical patent/JPS5652908A/en
Priority to GB8029519A priority patent/GB2063603B/en
Priority to FR8020406A priority patent/FR2466899B1/en
Priority to DE3036785A priority patent/DE3036785C2/en
Publication of JPS5652908A publication Critical patent/JPS5652908A/en
Priority to US06/454,250 priority patent/US4583059A/en
Priority to SG33385A priority patent/SG33385G/en
Priority to HK567/85A priority patent/HK56785A/en
Publication of JPS6346601B2 publication Critical patent/JPS6346601B2/ja
Granted 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
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To make the frequency adjustable without using a trimmer condenser, by varying the load capacity of an oscillating circuit by means of the duty of a switching pulse. CONSTITUTION:The quartz oscillating circuit OS is formed by a quartz vibrator Q, a feedback resistor R, an inverter V and load capacities C1, C2, and a condenser C3 and a switching circuit S are connected in parallel to the load capacity C2. And the condenser C3 is connected in parallel to the load capacity C2 or it is cut off by providing a pulse P to the terminal (a) of the switching circuit S, and accordingly the effective load capacity is varied so that the oscillation frequency can be adjusted.
JP12854779A 1979-10-05 1979-10-05 Oscillation frequency adjusting device Granted JPS5652908A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP12854779A JPS5652908A (en) 1979-10-05 1979-10-05 Oscillation frequency adjusting device
GB8029519A GB2063603B (en) 1979-10-05 1980-09-12 Frequency controlled oscillator circuit
FR8020406A FR2466899B1 (en) 1979-10-05 1980-09-23 PIEZOELECTRIC OSCILLATOR
DE3036785A DE3036785C2 (en) 1979-10-05 1980-09-30 Oscillator circuit
US06/454,250 US4583059A (en) 1979-10-05 1982-12-29 Adjustable frequency crystal oscillator with temperature compensation
SG33385A SG33385G (en) 1979-10-05 1985-05-02 Oscillator circuit
HK567/85A HK56785A (en) 1979-10-05 1985-08-01 Oscillator circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12854779A JPS5652908A (en) 1979-10-05 1979-10-05 Oscillation frequency adjusting device

Publications (2)

Publication Number Publication Date
JPS5652908A true JPS5652908A (en) 1981-05-12
JPS6346601B2 JPS6346601B2 (en) 1988-09-16

Family

ID=14987447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12854779A Granted JPS5652908A (en) 1979-10-05 1979-10-05 Oscillation frequency adjusting device

Country Status (1)

Country Link
JP (1) JPS5652908A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6118612U (en) * 1984-07-10 1986-02-03 富士通テン株式会社 Temperature compensation circuit for crystal oscillator circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51149755A (en) * 1975-06-17 1976-12-22 Citizen Watch Co Ltd Electronic clock
JPS5386552A (en) * 1977-01-10 1978-07-31 Citizen Watch Co Ltd Piezoelectric oscillator
JPS5487050A (en) * 1977-12-22 1979-07-11 Seiko Instr & Electronics Ltd Temperature compensated crystal oscillator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51149755A (en) * 1975-06-17 1976-12-22 Citizen Watch Co Ltd Electronic clock
JPS5386552A (en) * 1977-01-10 1978-07-31 Citizen Watch Co Ltd Piezoelectric oscillator
JPS5487050A (en) * 1977-12-22 1979-07-11 Seiko Instr & Electronics Ltd Temperature compensated crystal oscillator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6118612U (en) * 1984-07-10 1986-02-03 富士通テン株式会社 Temperature compensation circuit for crystal oscillator circuit
JPH0540569Y2 (en) * 1984-07-10 1993-10-14

Also Published As

Publication number Publication date
JPS6346601B2 (en) 1988-09-16

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