JPS5247669A - Crystal oscillation circuit - Google Patents

Crystal oscillation circuit

Info

Publication number
JPS5247669A
JPS5247669A JP12410375A JP12410375A JPS5247669A JP S5247669 A JPS5247669 A JP S5247669A JP 12410375 A JP12410375 A JP 12410375A JP 12410375 A JP12410375 A JP 12410375A JP S5247669 A JPS5247669 A JP S5247669A
Authority
JP
Japan
Prior art keywords
crystal oscillation
oscillation circuit
value
condenser
oscilaltion
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
JP12410375A
Other languages
Japanese (ja)
Inventor
Katsu Arakawa
Takeshi Katano
Tatsuyuki Hori
Ichiro Maki
Nobutoshi Maruyama
Michio Sasaki
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP12410375A priority Critical patent/JPS5247669A/en
Publication of JPS5247669A publication Critical patent/JPS5247669A/en
Pending 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
    • H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To accelerate the starting time of the crystal oscillation at the low drive level, by setting to the value of the condenser whose oscilaltion is instantly started, during the initial tau seconds after the power supply is put in, and changing to the value of the condenser which satisfies the objective frequency condition.
JP12410375A 1975-10-14 1975-10-14 Crystal oscillation circuit Pending JPS5247669A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12410375A JPS5247669A (en) 1975-10-14 1975-10-14 Crystal oscillation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12410375A JPS5247669A (en) 1975-10-14 1975-10-14 Crystal oscillation circuit

Publications (1)

Publication Number Publication Date
JPS5247669A true JPS5247669A (en) 1977-04-15

Family

ID=14876988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12410375A Pending JPS5247669A (en) 1975-10-14 1975-10-14 Crystal oscillation circuit

Country Status (1)

Country Link
JP (1) JPS5247669A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH052435U (en) * 1991-06-21 1993-01-14 シチズン時計株式会社 Temperature compensated crystal oscillator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4411701Y1 (en) * 1966-05-01 1969-05-15
JPS493552A (en) * 1972-04-20 1974-01-12
JPS5020427A (en) * 1973-06-29 1975-03-04

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4411701Y1 (en) * 1966-05-01 1969-05-15
JPS493552A (en) * 1972-04-20 1974-01-12
JPS5020427A (en) * 1973-06-29 1975-03-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH052435U (en) * 1991-06-21 1993-01-14 シチズン時計株式会社 Temperature compensated crystal oscillator

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