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JPS6425601A - Temperature compensated crystal oscillator - Google Patents

Temperature compensated crystal oscillator

Info

Publication number
JPS6425601A
JPS6425601A JP18292987A JP18292987A JPS6425601A JP S6425601 A JPS6425601 A JP S6425601A JP 18292987 A JP18292987 A JP 18292987A JP 18292987 A JP18292987 A JP 18292987A JP S6425601 A JPS6425601 A JP S6425601A
Authority
JP
Japan
Prior art keywords
temperature
compensation
information
voltage
oscillator
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
JP18292987A
Other languages
Japanese (ja)
Inventor
Kotaro Yajima
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.)
Kyocera Crystal Device Corp
Original Assignee
Kyocera Crystal Device Corp
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 Kyocera Crystal Device Corp filed Critical Kyocera Crystal Device Corp
Priority to JP18292987A priority Critical patent/JPS6425601A/en
Publication of JPS6425601A publication Critical patent/JPS6425601A/en
Pending legal-status Critical Current

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  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To change the compensation for only some temperature by varying a level adjustment of a temperature section divided minutely depending on the number of stages of a voltage controlled filter independently. CONSTITUTION:A temperature detection section 30 generates a voltage with respect to temperature information in a range of temperature applying temperature compensation and a selection frequency of a voltage controlled filter VCF group is varied depending on the voltage. When the selection frequency at a temperature is decided, an output of the oscillation frequency of the oscillator 10 is obtained. This is adjusted to a required level by a level control group 40 and it is added by an adder 50. Then a series of voltage outputs is obtained with respect to the temperature information within the temperature compensation range. The AC temperature compensation information is given to a detector 60 to convert it into DC temperature information. The temperature compensation information is given to the voltage controlled crystal oscillator 70 to apply temperature compensation by a varactor diode, etc., in the oscillator 70. Thus, the compensation at some temperature only is to be varied.
JP18292987A 1987-07-21 1987-07-21 Temperature compensated crystal oscillator Pending JPS6425601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18292987A JPS6425601A (en) 1987-07-21 1987-07-21 Temperature compensated crystal oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18292987A JPS6425601A (en) 1987-07-21 1987-07-21 Temperature compensated crystal oscillator

Publications (1)

Publication Number Publication Date
JPS6425601A true JPS6425601A (en) 1989-01-27

Family

ID=16126842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18292987A Pending JPS6425601A (en) 1987-07-21 1987-07-21 Temperature compensated crystal oscillator

Country Status (1)

Country Link
JP (1) JPS6425601A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5716341A (en) * 1993-06-29 1998-02-10 Saito; Yoshikuni Hub for syringe, connecting structure of hub, syringe, piston, needle assembly unit, connecting structure between needle assembly unit and syringe, syringe assembly and method of assembling syringe assembly
US5772687A (en) * 1993-03-12 1998-06-30 Saito; Yoshikuni Hub for syringe, connecting structure of hub, syringe, syringe assembly and method of assembling syringe assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5772687A (en) * 1993-03-12 1998-06-30 Saito; Yoshikuni Hub for syringe, connecting structure of hub, syringe, syringe assembly and method of assembling syringe assembly
US5716341A (en) * 1993-06-29 1998-02-10 Saito; Yoshikuni Hub for syringe, connecting structure of hub, syringe, piston, needle assembly unit, connecting structure between needle assembly unit and syringe, syringe assembly and method of assembling syringe assembly
US5788672A (en) * 1993-06-29 1998-08-04 Saito; Yoshikuni Hub for syringe, connecting structure of hub, syringe, piston, needle assembly unit, connecting structure between needle assembly unit and syringe, syringe assembly and method of assembling syringe assembly
US5879339A (en) * 1993-06-29 1999-03-09 Saito; Yoshikuni Hub for syringe, connecting structure of hub, syringe, piston, needle assembly unit, connecting structure between needle assembly unit and syringe, syringe assembly and method of assembling syringe assembly

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