JPS55137705A - Temperature compensating unit of crystal oscillating circuit - Google Patents

Temperature compensating unit of crystal oscillating circuit

Info

Publication number
JPS55137705A
JPS55137705A JP4635479A JP4635479A JPS55137705A JP S55137705 A JPS55137705 A JP S55137705A JP 4635479 A JP4635479 A JP 4635479A JP 4635479 A JP4635479 A JP 4635479A JP S55137705 A JPS55137705 A JP S55137705A
Authority
JP
Japan
Prior art keywords
temperature
capacitors
oscillating circuit
fixed
crystal oscillating
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
JP4635479A
Other languages
Japanese (ja)
Inventor
Koichi Inasumi
Akio Matsumoto
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP4635479A priority Critical patent/JPS55137705A/en
Publication of JPS55137705A publication Critical patent/JPS55137705A/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
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To make it possible to improve easily a frequency-temperature characteristic by providing plural temperature compensating capacitors for a crystal oscillating circuit and by switching them by a slide contact fixed to a bimetal. CONSTITUTION:A crystal oscillating circuit consisting of phase inversional amplifying inverter 1, crystal vibrator X and capacitor CT for oscillation frequency adjustment is provided with capacitors C0-C3 for temperature compensation. Fixed contacts 3 where capacitors C0-C3 are connected is switched by slide contact 2 fixed to bimetal which is fixed to fixing stand 4. Bimetal 1 deforms due to change of the ambient temperature, and contact 2 is connected to contact 3 of capacitors C0-C3 of an optimum compensation capacitor according to the ambient temperature successively according to temperature change, thus compensating the temperature of the oscillation frequency automatically. Therefore, the frequency-temperature characteristic can be improved easily.
JP4635479A 1979-04-15 1979-04-15 Temperature compensating unit of crystal oscillating circuit Pending JPS55137705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4635479A JPS55137705A (en) 1979-04-15 1979-04-15 Temperature compensating unit of crystal oscillating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4635479A JPS55137705A (en) 1979-04-15 1979-04-15 Temperature compensating unit of crystal oscillating circuit

Publications (1)

Publication Number Publication Date
JPS55137705A true JPS55137705A (en) 1980-10-27

Family

ID=12744802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4635479A Pending JPS55137705A (en) 1979-04-15 1979-04-15 Temperature compensating unit of crystal oscillating circuit

Country Status (1)

Country Link
JP (1) JPS55137705A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143069A (en) * 1984-08-03 1986-03-01 Usac Electronics Ind Co Ltd Image reader
US5038119A (en) * 1989-03-03 1991-08-06 Seiko Epson Corporation Piezoelectric oscillator semiconductor circuit with oscillation circuit adjustment means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143069A (en) * 1984-08-03 1986-03-01 Usac Electronics Ind Co Ltd Image reader
US5038119A (en) * 1989-03-03 1991-08-06 Seiko Epson Corporation Piezoelectric oscillator semiconductor circuit with oscillation circuit adjustment means

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