JPH0242244B2 - - Google Patents
Info
- Publication number
- JPH0242244B2 JPH0242244B2 JP18602184A JP18602184A JPH0242244B2 JP H0242244 B2 JPH0242244 B2 JP H0242244B2 JP 18602184 A JP18602184 A JP 18602184A JP 18602184 A JP18602184 A JP 18602184A JP H0242244 B2 JPH0242244 B2 JP H0242244B2
- Authority
- JP
- Japan
- Prior art keywords
- heating tank
- opening
- crystal oscillator
- temperature
- heating
- 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.)
- Expired
Links
- 238000010438 heat treatment Methods 0.000 claims description 26
- 239000013078 crystal Substances 0.000 claims description 17
- 230000010355 oscillation Effects 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は外気の温度変化に対して周波数安定度
の高い水晶発振器を提供する水晶発振器用恒温槽
の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a constant temperature bath for a crystal oscillator that provides a crystal oscillator with high frequency stability against changes in the temperature of the outside air.
周波数安定度の高い水晶発振器を得るため、水
晶発振器の動作温度周波数変化の最も少い温度領
域にもたらし、かつ恒温槽によつて、その温度を
一定に保持する方式が採用されている。
In order to obtain a crystal oscillator with high frequency stability, a method is adopted in which the operating temperature of the crystal oscillator is brought to a temperature range where frequency changes are minimal, and the temperature is maintained constant using a constant temperature oven.
従来の方式は温度制御に加熱コイルを用い加熱
電流の加減によつて一定の温度を実現している。
しかし加熱コイルは断線、短絡等の障害を発生し
易く、巻線工程にもかなりの手間を要する等の欠
点がある。小形化と低電力化等の要望に対し、加
熱コイルを使用する方式は充分でないので、発熱
体としてトランジスタを選びトランジスタのコレ
クタ損失にて発生する温度上昇を加熱源として使
用する方式が提案され、小形化と低電力化に役立
つ。 The conventional method uses a heating coil for temperature control and achieves a constant temperature by adjusting the heating current.
However, heating coils are prone to problems such as disconnections and short circuits, and the winding process requires considerable effort. In response to demands for smaller size and lower power consumption, methods using heating coils were not sufficient, so a method was proposed in which a transistor was selected as the heating element and the temperature rise generated by the transistor's collector loss was used as the heating source. Useful for downsizing and lower power consumption.
第２図はかゝる効果を実現させるために提案し
た水晶発振器用恒温槽の一例を示す断面図であ
る。 FIG. 2 is a sectional view showing an example of a constant temperature bath for a crystal oscillator proposed to realize such an effect.
図において、１は恒温槽を保護するためのケー
ス、２は右側に底部左側に開口部をもつ魔法ビ
ン、３は水晶振動子４と発熱トランジスタ５を内
蔵する加熱槽、６は発振回路用プリント板、６′
は恒温槽用プリント板、７，８はプリント板上の
部品、９は絶縁板でプリント板を支持する部材を
加熱槽と協同して支持している。１０は断熱材で
魔法ビン開口部を封止している。 In the figure, 1 is a case to protect the thermostatic oven, 2 is a thermos bottle with an opening on the bottom left side on the right side, 3 is a heating tank with a built-in crystal oscillator 4 and heat generating transistor 5, and 6 is a print for the oscillation circuit. Board, 6'
Reference numeral denotes a printed board for a constant temperature bath, 7 and 8 are components on the printed board, and 9 is an insulating plate that supports a member for supporting the printed board in cooperation with the heating tank. 10 seals the opening of the thermos bottle with a heat insulating material.
第２図の構成においては加熱槽３には水晶振動
子４だけが配置され、加熱槽は熱の逃げることの
ない魔法ビンの底部に設けられ、かつ魔法ビンの
開口部は絶縁板９と断熱材１０とによつて熱的に
外界と完全に遮断されている。発振回路プリント
板６と恒温槽用プリント板６′は開口部側に配置
される。 In the configuration shown in FIG. 2, only the crystal oscillator 4 is placed in the heating tank 3, the heating tank is provided at the bottom of the thermos from which heat cannot escape, and the opening of the thermos is insulated with the insulating plate 9. It is completely thermally isolated from the outside world by the material 10. The oscillation circuit printed board 6 and the constant temperature oven printed board 6' are arranged on the opening side.
上記のような既に提案された水晶発振器用恒温
槽は水晶振動子部の温度特性は良好である。しか
し周波数安定度として10-8以上の値を得るには不
充分である。
The temperature characteristics of the crystal oscillator portion of the already proposed constant temperature bath for crystal oscillators as described above are good. However, it is insufficient to obtain a frequency stability value of 10 -8 or more.
外気温度変動により周波数安定度10-8〜10-10
オーダの発振器を余裕をもつて実現させることが
望まれるが、このように水晶発振器の周波数変化
を安定化するためには恒温槽の特性を安定化させ
なくてはならない。 Frequency stability 10 -8 to 10 - 10 due to outside temperature fluctuations
It is desirable to realize a custom-sized oscillator with sufficient margin, but in order to stabilize the frequency changes of the crystal oscillator, the characteristics of the thermostatic chamber must be stabilized.
本発明によれば開口部を断熱材１０にて封止し
た魔法ビン２の内部に加熱槽３を入れ、該加熱槽
３に水晶振動子４と発熱トランジスタ５を内蔵せ
しめ、さらに加熱槽の魔法ビン開口部側に熱伝導
性良好な金属板１１を設けて開口部をほゞ閉じ、
他方魔法ビンの底部側に半円筒又は円筒状の熱伝
導板１２を設けその内側に発振回路６を設けるこ
とによつて問題点を解決した。
According to the present invention, a heating tank 3 is placed inside a thermos bottle 2 whose opening is sealed with a heat insulating material 10, a crystal oscillator 4 and a heat generating transistor 5 are built into the heating tank 3, and the heating tank is further equipped with a magic bottle. A metal plate 11 with good thermal conductivity is provided on the side of the bottle opening to substantially close the opening.
On the other hand, the problem was solved by providing a semi-cylindrical or cylindrical heat conductive plate 12 on the bottom side of the thermos flask and providing an oscillation circuit 6 inside it.
即ち恒温槽の特性を安定化する手段としては構造
部分の改良と温度制御回路の改善が考えられるが
恒温槽の構造的要素が大きく作用するので構造部
分の改良手段を構じた。That is, as a means to stabilize the characteristics of the thermostatic oven, it is possible to improve the structural parts and improve the temperature control circuit, but since the structural elements of the thermostatic oven have a large effect, we took measures to improve the structural parts.
改良前の発振回路部の温度変動が特性に大きな
影響をあたえていたが本発明の改良によつて水晶
振動子部と同等の温度変動に維持することが可能
となり周波数安定度は10-8〜10-10のものを得る
ことができる。
Before the improvement, temperature fluctuations in the oscillation circuit section had a large effect on the characteristics, but with the improvements of the present invention, it is now possible to maintain temperature fluctuations equivalent to those of the crystal resonator section, and the frequency stability has improved to 10 -8 ~ You can get 10 -10 things.
また本発明の恒温槽の場合加熱槽は水晶振動子
だけを収容すればよいので、小形かつ加熱電力も
少くてすむ。また発振回路部分は良伝導性の金属
材料例えば銅、アルミ材等で包まれるため、加熱
槽内に収容しないでも温度安定性が保持され、ま
た加熱槽の開口部側金属板は開口側全面において
恒温槽内の温度を一様とする。 Furthermore, in the case of the constant temperature bath of the present invention, the heating bath only needs to house the crystal resonator, so it is small and requires less heating power. In addition, since the oscillation circuit part is wrapped in a highly conductive metal material such as copper or aluminum, temperature stability is maintained even if it is not housed in the heating tank, and the metal plate on the opening side of the heating tank is Keep the temperature in the thermostatic chamber uniform.
〔実施例〕
本発明の要旨を第１図の断面図にて示す実施例
につき具体的に説明する。第２図と同一部分は同
一番号にて示してある。ケース１に収容した魔法
ビン２の開口部は断熱材１０にて封止されてい
る。加熱槽３は魔法ビン２の開口部側に置かれ該
加熱槽に取付けた熱伝導良好な金属板１１がほゞ
開口部一杯に配置される。発振回路用プリント板
６は加熱槽右側に置かれ、該槽に取付けた熱伝導
性良好な半円筒又は円筒状の熱伝導板１２によつ
て包まれている。[Example] The gist of the present invention will be specifically described with reference to an example shown in the sectional view of FIG. The same parts as in FIG. 2 are designated by the same numbers. The opening of the thermos flask 2 housed in the case 1 is sealed with a heat insulating material 10. The heating tank 3 is placed on the opening side of the thermos flask 2, and a metal plate 11 with good heat conduction attached to the heating tank is placed almost completely in the opening. The printed circuit board 6 for the oscillation circuit is placed on the right side of the heating tank, and is surrounded by a semicircular or cylindrical heat conductive plate 12 with good thermal conductivity attached to the tank.
加熱槽３内の発熱トランジスタから与えられる
熱で発振回路６は半円筒又は円筒状の熱伝導板１
２にて一様に温度を保ち、また魔法ビン開口側の
金属板に伝達した熱によつて槽内開口部断面の温
度が一様に保たれる。 The oscillation circuit 6 uses the heat given from the heat generating transistor in the heating tank 3 to generate a semi-cylindrical or cylindrical heat conductive plate 1.
2, the temperature is maintained uniformly, and the temperature of the cross section of the opening inside the tank is maintained uniformly by the heat transferred to the metal plate on the opening side of the thermos bottle.
以上述べたように本発明によれば １ 温度周波数安定度の改善 ２ 小形かつ小電力化 された水晶発振器用恒温槽を提供できる。 As described above, according to the present invention 1 Improvement of temperature frequency stability 2 Small size and low power consumption We can provide a constant temperature bath for crystal oscillators.
第１図は本発明の実施例を示す断面図、第２図
は本発明により改良されるべき恒温槽の断面図を
示す。
図において、１はケース、２は魔法ビン、３は
加熱槽、４は水晶振動子、５は発熱トランジス
タ、６は発振回路、７，８はプリント板上の素
子、９は絶縁板、１０は断熱材、１１は金属板、
１２は熱伝導板、である。
FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view of a thermostatic chamber to be improved by the present invention. In the figure, 1 is a case, 2 is a thermos bottle, 3 is a heating tank, 4 is a crystal oscillator, 5 is a heat generating transistor, 6 is an oscillation circuit, 7 and 8 are elements on a printed board, 9 is an insulating plate, and 10 is a Insulation material, 11 is a metal plate,
12 is a heat conductive plate.
Claims (1)
の内部には加熱槽３を入れ、該加熱槽には水晶振
動子４と発熱トランジスタ５を内蔵せしめ、さら
に加熱槽の魔法ビン開口部側に熱伝導性良好な金
属板１１を設けて開口部分をほゞ閉じ他方魔法ビ
ンの底部側には半円筒又は円筒状の熱伝導板１２
を設けその内側に発振回路６を設けたことを特徴
とする水晶発振器用恒温槽。1 Thermos bottle 2 whose opening is sealed with heat insulating material 10
A heating tank 3 is placed inside the heating tank, and a crystal oscillator 4 and a heat generating transistor 5 are built into the heating tank, and a metal plate 11 with good thermal conductivity is provided on the opening side of the thermos bottle of the heating tank to close the opening. On the other hand, there is a semi-cylindrical or cylindrical heat conductive plate 12 on the bottom side of the thermos bottle.
A constant temperature bath for a crystal oscillator, characterized in that an oscillation circuit 6 is provided inside the bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18602184A JPS6165508A (en) | 1984-09-05 | 1984-09-05 | Constant temperature oven for crystal oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18602184A JPS6165508A (en) | 1984-09-05 | 1984-09-05 | Constant temperature oven for crystal oscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6165508A JPS6165508A (en) | 1986-04-04 |
| JPH0242244B2 true JPH0242244B2 (en) | 1990-09-21 |
Family
ID=16181004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18602184A Granted JPS6165508A (en) | 1984-09-05 | 1984-09-05 | Constant temperature oven for crystal oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6165508A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6376330B2 (en) * | 2014-03-25 | 2018-08-22 | セイコーエプソン株式会社 | Electronic parts, electronic devices and mobile objects |
-
1984
- 1984-09-05 JP JP18602184A patent/JPS6165508A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6165508A (en) | 1986-04-04 |
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