JPH01171112U - - Google Patents
Info
- Publication number
- JPH01171112U JPH01171112U JP6086988U JP6086988U JPH01171112U JP H01171112 U JPH01171112 U JP H01171112U JP 6086988 U JP6086988 U JP 6086988U JP 6086988 U JP6086988 U JP 6086988U JP H01171112 U JPH01171112 U JP H01171112U
- Authority
- JP
- Japan
- Prior art keywords
- temperature compensation
- compensation circuit
- parallel
- thermistor
- capacitor
- 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.)
- Granted
Links
- 239000013078 crystal Substances 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Description
第１図はこの考案の一実施例による水晶発振器
の温度補償回路の構成を示す回路図、第２図は同
実施例に用いられる水晶振動子の等価回路図、第
３図は同実施例における温度補償回路のリアクタ
ンスの温度特性を示す図、第４図は同実施例にお
ける水晶振動子、温度補償回路および水晶発振器
の温度特性を示す図、第５図は従来の水晶発振器
の温度補償回路の構成を示す回路図である。
Ｔ１…高温補償用サーミスタ、Ｔ２…低温補償
用サーミスタ、Ｃ１，Ｃ２…温度補償用コンデン
サ、Ｒ３…補正用抵抗。
Fig. 1 is a circuit diagram showing the configuration of a temperature compensation circuit for a crystal oscillator according to an embodiment of this invention, Fig. 2 is an equivalent circuit diagram of a crystal resonator used in the embodiment, and Fig. 3 is an equivalent circuit diagram of a crystal oscillator used in the embodiment. FIG. 4 is a diagram showing the temperature characteristics of the reactance of the temperature compensation circuit. FIG. 4 is a diagram showing the temperature characteristics of the crystal resonator, temperature compensation circuit, and crystal oscillator in the same embodiment. FIG. 5 is a diagram showing the temperature characteristics of the conventional crystal oscillator temperature compensation circuit. FIG. 3 is a circuit diagram showing the configuration. T1 ...Thermistor for high temperature compensation, T2 ...Thermistor for low temperature compensation, C1 , C2 ...Capacitor for temperature compensation, R3 ...Resistance for correction.
Claims (1)
あつて、第１のサーミスタと第１のコンデンサと
を並列接続した並列接続体に抵抗を直列接続して
高温補償回路と成し、第２のサーミスタと第２の
コンデンサとを直列接続して低温補償回路と成し
、前記高温補償回路と前記低温補償回路とを並列
接続して成ることを特徴とする水晶発振器の温度
補償回路。 A temperature compensation circuit connected in series to a crystal resonator, a high temperature compensation circuit is formed by connecting a resistor in series to a parallel connection body in which a first thermistor and a first capacitor are connected in parallel, and a second thermistor and a first capacitor are connected in parallel. A temperature compensation circuit for a crystal oscillator, characterized in that a thermistor and a second capacitor are connected in series to form a low temperature compensation circuit, and the high temperature compensation circuit and the low temperature compensation circuit are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988060869U JPH051128Y2 (en) | 1988-05-09 | 1988-05-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988060869U JPH051128Y2 (en) | 1988-05-09 | 1988-05-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01171112U true JPH01171112U (en) | 1989-12-04 |
| JPH051128Y2 JPH051128Y2 (en) | 1993-01-13 |
Family
ID=31286566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988060869U Expired - Lifetime JPH051128Y2 (en) | 1988-05-09 | 1988-05-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH051128Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3322981A (en) * | 1964-04-29 | 1967-05-30 | Gen Electric | Crystal temperature compensation |
| JPS4828166A (en) * | 1971-08-17 | 1973-04-13 |
-
1988
- 1988-05-09 JP JP1988060869U patent/JPH051128Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3322981A (en) * | 1964-04-29 | 1967-05-30 | Gen Electric | Crystal temperature compensation |
| JPS4828166A (en) * | 1971-08-17 | 1973-04-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH051128Y2 (en) | 1993-01-13 |
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