JPS61136613U - - Google Patents
Info
- Publication number
- JPS61136613U JPS61136613U JP1802385U JP1802385U JPS61136613U JP S61136613 U JPS61136613 U JP S61136613U JP 1802385 U JP1802385 U JP 1802385U JP 1802385 U JP1802385 U JP 1802385U JP S61136613 U JPS61136613 U JP S61136613U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- voltage
- controlled variable
- variable capacitance
- capacitance element
- 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
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Superheterodyne Receivers (AREA)
Description
第１図は本考案の実施例を示す回路図、第２図
は本考案の実施例を示す回路図、第３図は従来例
を示す回路図である。
なお、図面に用いられた符号において、Ｑ１，
Ｑ２……トランジスタ、ＶＣ３，ＶＣ４……電圧
制御可変容量素子、Ｌ１……コイル、Ｌ４……チ
ヨークコイル、３……電圧制御端子である。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is a circuit diagram showing an embodiment of the present invention, and FIG. 3 is a circuit diagram showing a conventional example. In addition, in the symbols used in the drawings, Q 1 ,
Q2 ...transistor, VC3 , VC4 ...voltage controlled variable capacitance element, L1 ...coil, L4 ...chiyoke coil, 3...voltage control terminal.
補正 昭６０．５．２４
実用新案登録請求の範囲を次のように補正する
。Amendment May 24, 1986 The scope of claims for utility model registration is amended as follows.
【実用新案登録請求の範囲】
コレクタが負荷インピーダンスを介して電源に
接続されベース接地増幅器として動作する第１の
トランジスタとコレクタが上記電源に接続されコ
レクタ接地増幅器として動作する第２のトランジ
スタとから成り且つ上記第１のトランジスタのエ
ミツタと上記第２のトランジスタのエミツタとが
接続されて成る差動増幅器と、
上記第１のトランジスタのコレクタと基準電位
点間に接続された第１の電圧制御可変容量素子と
コイルとの直列回路と、
上記第１の電圧制御可変容量素子と上記コイル
との接続点を上記第２のトランジスタのベースに
接続する帰還回路と、
上記直列回路に並列に接続された第２の電圧制
御可変容量素子と、
上記第１及び第２の電圧制御可変容量素子に制
御電圧を加える回路
とから成る電圧制御発振回路。[Claims for Utility Model Registration] A first transistor whose collector is connected to a power supply through a load impedance and operates as a common-base amplifier, and a second transistor whose collector is connected to the power supply and which operates as a common-collector amplifier. and a differential amplifier in which the emitter of the first transistor and the emitter of the second transistor are connected; and a first voltage-controlled variable capacitor connected between the collector of the first transistor and a reference potential point. a series circuit of an element and a coil; a feedback circuit connecting a connection point between the first voltage-controlled variable capacitance element and the coil to the base of the second transistor; and a feedback circuit connected in parallel to the series circuit. 2; and a circuit for applying a control voltage to the first and second voltage controlled variable capacitance elements.
Claims (1)
接続されベース接地増幅器として動作する第１の
トランジスタのエミツタとコレクタが上記電源に
接続されコレクタ接地増幅器として動作する第２
のトランジスタのエミツタとが接続されて成る差
動増幅器と、上記第１のトランジスタのコレクタ
と基準電位点間に接続された第１の電圧制御可変
容量素子とコイルとの直列回路と、上記第１の電
圧制御可変容量素子と上記コイルとの接続点を上
記第２のトランジスタのベースに接続する帰還回
路と、上記直列回路に並列に接続された第２の電
圧制御可変容量素子と、上記第１及び第２の電圧
制御可変容量素子に制御電圧を加える回路とから
成る電圧制御発振回路。 The emitter of the first transistor is connected to the power source via a load impedance and operates as a common-base amplifier, and the second transistor whose collector is connected to the power source and operates as a common-collector amplifier.
a differential amplifier connected to the emitter of a transistor; a series circuit of a coil and a first voltage-controlled variable capacitance element connected between the collector of the first transistor and a reference potential point; a feedback circuit that connects a connection point between the voltage controlled variable capacitance element and the coil to the base of the second transistor; a second voltage controlled variable capacitance element connected in parallel to the series circuit; and a circuit for applying a control voltage to the second voltage-controlled variable capacitance element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1802385U JPH0317451Y2 (en) | 1985-02-12 | 1985-02-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1802385U JPH0317451Y2 (en) | 1985-02-12 | 1985-02-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61136613U true JPS61136613U (en) | 1986-08-25 |
| JPH0317451Y2 JPH0317451Y2 (en) | 1991-04-12 |
Family
ID=30506271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1802385U Expired JPH0317451Y2 (en) | 1985-02-12 | 1985-02-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0317451Y2 (en) |
-
1985
- 1985-02-12 JP JP1802385U patent/JPH0317451Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0317451Y2 (en) | 1991-04-12 |
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