JPH0336211U - - Google Patents
Info
- Publication number
- JPH0336211U JPH0336211U JP9729189U JP9729189U JPH0336211U JP H0336211 U JPH0336211 U JP H0336211U JP 9729189 U JP9729189 U JP 9729189U JP 9729189 U JP9729189 U JP 9729189U JP H0336211 U JPH0336211 U JP H0336211U
- Authority
- JP
- Japan
- Prior art keywords
- crystal oscillator
- temperature
- output
- switching
- application device
- 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
Links
- 239000013078 crystal Substances 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Description
第１図は本考案の一実施例を示す構成図、第２
図は本考案の一実施例における動作説明図である
。
１……温度補償型水晶発振器、２……恒温槽付
水晶発振器、３……熱平衡到達検出手段、４……
制御回路、５……スイツチ、６……電源、７……
温度補償型水晶発振器の特性、８……恒温槽付水
晶発振器の特性。
Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The figure is an explanatory diagram of the operation in one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Temperature compensated crystal oscillator, 2...Crystal oscillator with constant temperature oven, 3...Thermal equilibrium reaching detection means, 4...
Control circuit, 5... switch, 6... power supply, 7...
Characteristics of temperature compensated crystal oscillator, 8...Characteristics of crystal oscillator with constant temperature oven.
Claims (1)
準周波数信号の作成に供される電子応用装置にお
いて、装置の起動操作によつて同時に駆動される
温度補償型水晶発振器及び恒温槽付き水晶発振器
と、前記恒温槽の熱平衡到達を検出する熱平衡検
出手段と、該熱平衡検出手段の出力により基準信
号を前記温度補償型水晶発振器から恒温槽付き水
晶発振器の出力に切替える切替え制御手段とから
なることを特徴とする基準発振器切替え機能を備
えた電子応用装置。 (2) 水晶発振器の出力が基準クロツク信号や基
準周波数信号の作成に供される電子応用装置にお
いて、装置の起動操作によつて同時に駆動される
温度補償型水晶発振器及び恒温槽付き水晶発振器
と、前記起動操作から所定の時間経過後に、基準
信号を前記温度補償型水晶発振器から恒温槽付き
水晶発振器の出力に切替える切替え制御手段とか
らなることを特徴とする基準発振器切替え機能を
備えた電子応用装置。[Scope of Claim for Utility Model Registration] (1) Temperature-compensated crystal oscillator that is simultaneously driven by the startup operation of the device in an electronic application device in which the output of the crystal oscillator is used to create a reference clock signal or reference frequency signal. and a crystal oscillator with a thermostatic oven, a thermal equilibrium detection means for detecting the arrival of thermal equilibrium in the thermostatic oven, and a switching control for switching a reference signal from the temperature-compensated crystal oscillator to the output of the thermostatic oven-equipped crystal oscillator based on the output of the thermal equilibrium detection means. An electronic application device equipped with a reference oscillator switching function, characterized in that it consists of means. (2) In an electronic application device in which the output of a crystal oscillator is used to create a reference clock signal or a reference frequency signal, a temperature-compensated crystal oscillator and a temperature-controlled crystal oscillator that are simultaneously driven by the startup operation of the device; An electronic application device having a reference oscillator switching function, comprising a switching control means for switching the reference signal from the temperature-compensated crystal oscillator to the output of the temperature-controlled crystal oscillator after a predetermined time has elapsed from the start-up operation. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9729189U JPH0336211U (en) | 1989-08-21 | 1989-08-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9729189U JPH0336211U (en) | 1989-08-21 | 1989-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0336211U true JPH0336211U (en) | 1991-04-09 |
Family
ID=31646439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9729189U Pending JPH0336211U (en) | 1989-08-21 | 1989-08-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0336211U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009124291A (en) * | 2007-11-13 | 2009-06-04 | Nippon Dempa Kogyo Co Ltd | Highly-stable oscillator with constant temperature oven |
| JP2014022913A (en) * | 2012-07-18 | 2014-02-03 | Nippon Dempa Kogyo Co Ltd | High stability oscillator |
| JP2017034620A (en) * | 2015-08-06 | 2017-02-09 | セイコーエプソン株式会社 | Oscillator, electronic apparatus and base station |
| CN112422123A (en) * | 2020-11-24 | 2021-02-26 | 武汉滨湖电子有限责任公司 | Low-phase noise frequency synthesizer and local oscillator implementation method |
-
1989
- 1989-08-21 JP JP9729189U patent/JPH0336211U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009124291A (en) * | 2007-11-13 | 2009-06-04 | Nippon Dempa Kogyo Co Ltd | Highly-stable oscillator with constant temperature oven |
| JP2014022913A (en) * | 2012-07-18 | 2014-02-03 | Nippon Dempa Kogyo Co Ltd | High stability oscillator |
| JP2017034620A (en) * | 2015-08-06 | 2017-02-09 | セイコーエプソン株式会社 | Oscillator, electronic apparatus and base station |
| CN112422123A (en) * | 2020-11-24 | 2021-02-26 | 武汉滨湖电子有限责任公司 | Low-phase noise frequency synthesizer and local oscillator implementation method |
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