JPH0390114U - - Google Patents
Info
- Publication number
- JPH0390114U JPH0390114U JP14985589U JP14985589U JPH0390114U JP H0390114 U JPH0390114 U JP H0390114U JP 14985589 U JP14985589 U JP 14985589U JP 14985589 U JP14985589 U JP 14985589U JP H0390114 U JPH0390114 U JP H0390114U
- Authority
- JP
- Japan
- Prior art keywords
- diode
- base
- transistor
- emitter
- series
- 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 7
- 230000010355 oscillation Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
- Transmitters (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Description
第１図は本考案の水晶発振回路の回路図、第２
図はトランジスタのベース電流を一定とした場合
のコレクタ、エミツタ間電圧に対するコレクタの
電流特性図、第３図はダイオードの順方向電流に
対する順方向電圧の特性図、第４図は従来の水晶
発振回路図を示している。
符号の説明、Ｘ１……水晶振動子、Ｑ１……ト
ランジスタ、Ｄ１，Ｄ２……ダイオード、Ｒ１…
…抵抗。
Figure 1 is a circuit diagram of the crystal oscillation circuit of the present invention, Figure 2
The figure shows the current characteristics of the collector with respect to the voltage between the collector and emitter when the base current of the transistor is constant. Figure 3 shows the characteristics of the forward voltage with respect to the forward current of the diode. Figure 4 shows the conventional crystal oscillator circuit. The figure shows. Explanation of symbols, X1...Crystal resonator, Q1...Transistor, D1, D2...Diode, R1...
…resistance.
Claims (1)
コイルなどのリアクタンス素子とを組み合わせた
直列共振回路あるいは並列共振回路を、接合型の
トランジスタのベース側に接続して高周波発振信
号を出力させる構成としたセキユリテイーワイヤ
レス発信器用水晶発振回路において、 上記トランジスタのベースとエミツタ間の直流
バイアス電圧を得るためのバイアス回路は、該ト
ランジスタのベース、エミツタ間の順方向電圧の
温度特性と等しい温度特性を有する接合型ダイオ
ードを含む順方向に直列接続された少なくとも１
以上のダイオードと、該ダイオードに流れる電流
を規定するバイアス抵抗とを直列接続した構成と
されており、 該ダイオード側のバイアス電圧を上記トランジ
スタのベース、エミツタ間側に順方向に加えるよ
うに接続したことを特徴とする、セキユリテイー
ワイヤレス発信器用水晶発振回路。[Scope of claim for utility model registration] Crystal resonator or crystal resonator and capacitor,
In a crystal oscillation circuit for a security wireless oscillator configured to output a high-frequency oscillation signal by connecting a series resonant circuit or a parallel resonant circuit combined with a reactance element such as a coil to the base side of a junction type transistor, the above-mentioned A bias circuit for obtaining a DC bias voltage between the base and emitter of the transistor includes a junction diode connected in series in the forward direction and having a temperature characteristic equal to the temperature characteristic of the forward voltage between the base and emitter of the transistor. at least 1
The above diode is connected in series with a bias resistor that regulates the current flowing through the diode, and the bias voltage on the diode side is connected in a forward direction between the base and emitter of the transistor. A crystal oscillation circuit for a security wireless oscillator, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14985589U JPH0390114U (en) | 1989-12-25 | 1989-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14985589U JPH0390114U (en) | 1989-12-25 | 1989-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0390114U true JPH0390114U (en) | 1991-09-13 |
Family
ID=31696228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14985589U Pending JPH0390114U (en) | 1989-12-25 | 1989-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0390114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08261915A (en) * | 1995-03-20 | 1996-10-11 | Olympus Optical Co Ltd | Tactile sensor probe and tactile sensor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48103159A (en) * | 1972-04-11 | 1973-12-25 | ||
| JPS5130449B2 (en) * | 1974-09-14 | 1976-09-01 |
-
1989
- 1989-12-25 JP JP14985589U patent/JPH0390114U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48103159A (en) * | 1972-04-11 | 1973-12-25 | ||
| JPS5130449B2 (en) * | 1974-09-14 | 1976-09-01 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08261915A (en) * | 1995-03-20 | 1996-10-11 | Olympus Optical Co Ltd | Tactile sensor probe and tactile sensor |