JPS55134504A - Crystal oscillating circuit - Google Patents

Crystal oscillating circuit

Info

Publication number
JPS55134504A
JPS55134504A JP4181879A JP4181879A JPS55134504A JP S55134504 A JPS55134504 A JP S55134504A JP 4181879 A JP4181879 A JP 4181879A JP 4181879 A JP4181879 A JP 4181879A JP S55134504 A JPS55134504 A JP S55134504A
Authority
JP
Japan
Prior art keywords
switch element
potential
resistor
oscillating circuit
capacity
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
JP4181879A
Other languages
Japanese (ja)
Other versions
JPS6325524B2 (en
Inventor
Mitsuo Sekine
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP4181879A priority Critical patent/JPS55134504A/en
Publication of JPS55134504A publication Critical patent/JPS55134504A/en
Publication of JPS6325524B2 publication Critical patent/JPS6325524B2/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 improve the stability of a crystal oscillating circuit which makes a time-division adjustment of a frequency by using a switch element, by previously applying a potential to an adjusting capacitor by a high resistor or the switch element. CONSTITUTION:High resistor 16 is connected in parallel to switch element 15 connected to output terminal 20 of oscillating inverter 13. Therefore when switch element 15 turns ON by control signal 21, the capacity of frequency adjusting capacity body 19 is added to capacity body 17. Then when element 15 is OFF, capacity body 19 is invariably held via resistor 16 at a potential of a certain value, e.g., the same potential as the output terminal of inverter 13, so that when element 15 turns ON, no variation in bias potential will occur. As a result, the oscillating circuit can operate stably. As a substitute for resistor 16, high-resistance switch element 22 is usable.
JP4181879A 1979-04-06 1979-04-06 Crystal oscillating circuit Granted JPS55134504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4181879A JPS55134504A (en) 1979-04-06 1979-04-06 Crystal oscillating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4181879A JPS55134504A (en) 1979-04-06 1979-04-06 Crystal oscillating circuit

Publications (2)

Publication Number Publication Date
JPS55134504A true JPS55134504A (en) 1980-10-20
JPS6325524B2 JPS6325524B2 (en) 1988-05-25

Family

ID=12618876

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4181879A Granted JPS55134504A (en) 1979-04-06 1979-04-06 Crystal oscillating circuit

Country Status (1)

Country Link
JP (1) JPS55134504A (en)

Also Published As

Publication number Publication date
JPS6325524B2 (en) 1988-05-25

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