JPH01162919U - - Google Patents
Info
- Publication number
- JPH01162919U JPH01162919U JP6037888U JP6037888U JPH01162919U JP H01162919 U JPH01162919 U JP H01162919U JP 6037888 U JP6037888 U JP 6037888U JP 6037888 U JP6037888 U JP 6037888U JP H01162919 U JPH01162919 U JP H01162919U
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- varicap diode
- crystal
- oscillation circuit
- frequency signal
- 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
- 230000010355 oscillation Effects 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Description
第１図は本考案になる水晶発振回路の要部であ
る発振回路を説明するための回路構成図、第２図
はバリキヤツプダイオードの端子間容量対逆電圧
特性図、第３図、第５図は本考案になる水晶発振
回路の第１、第２実施例の回路構成図、第４図は
本考案になる水晶発振回路の要部である温度補償
電圧発生回路Ｂ，Ｅの出力電圧対温度特性図、第
６図は本考案になる水晶発振回路の周波数対温度
特性図、第７図は音叉形水晶振動子の周波数対温
度特性図である。
３…水晶振動子、７…バリキヤツプダイオード
、１０，１８，２２…サーミスタ（感温素子）、
１３，１５，２０…トランジスタ（スイツチング
素子）、Ａ…発振回路、Ｂ，Ｅ…温度補償電圧発
生回路、Ｃ，Ｄ…水晶発振回路、Ｋ…カソード端
子。
Figure 1 is a circuit configuration diagram for explaining the oscillation circuit, which is the main part of the crystal oscillation circuit according to the present invention, Figure 2 is a diagram of the inter-terminal capacitance versus reverse voltage characteristic of a varicap diode, Figures 3 and 5 The figures are circuit configuration diagrams of the first and second embodiments of the crystal oscillation circuit of the present invention, and FIG. FIG. 6 is a frequency versus temperature characteristic diagram of a crystal oscillation circuit according to the present invention, and FIG. 7 is a frequency versus temperature characteristic diagram of a tuning fork crystal resonator. 3...Crystal resonator, 7...Varicap diode, 10, 18, 22...Thermistor (temperature sensing element),
13, 15, 20...transistor (switching element), A...oscillation circuit, B, E...temperature compensation voltage generation circuit, C, D...crystal oscillation circuit, K...cathode terminal.
Claims (1)
、所定の発振周波数信号を出力する発振回路と、 感温素子とスイツチング素子とを有し、温度に
よる前記感温素子の抵抗値の変化に応じて前記ス
イツチング素子をオンオフして得た前記発振周波
数信号が変動しないようにするための電圧を、前
記水晶振動子に接続される前記バリキヤツプダイ
オードの一端に印加して前記バリキヤツプダイオ
ードの容量を可変する温度補償電圧発生回路とか
ら構成されたことを特徴とする水晶発振回路。[Claims for Utility Model Registration] An oscillation circuit that includes a crystal resonator and a varicap diode and outputs a predetermined oscillation frequency signal, and a temperature-sensitive element and a switching element, wherein the temperature-sensitive element changes depending on temperature. A voltage is applied to one end of the varicap diode connected to the crystal oscillator to prevent the oscillation frequency signal obtained by turning on and off the switching element in accordance with a change in resistance value from changing. A crystal oscillation circuit comprising a temperature-compensated voltage generation circuit that varies the capacitance of a varicap diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6037888U JPH01162919U (en) | 1988-05-07 | 1988-05-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6037888U JPH01162919U (en) | 1988-05-07 | 1988-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01162919U true JPH01162919U (en) | 1989-11-14 |
Family
ID=31286084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6037888U Pending JPH01162919U (en) | 1988-05-07 | 1988-05-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01162919U (en) |
-
1988
- 1988-05-07 JP JP6037888U patent/JPH01162919U/ja active Pending
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