JPH02150818U - - Google Patents

Info

Publication number
JPH02150818U
JPH02150818U JP5922089U JP5922089U JPH02150818U JP H02150818 U JPH02150818 U JP H02150818U JP 5922089 U JP5922089 U JP 5922089U JP 5922089 U JP5922089 U JP 5922089U JP H02150818 U JPH02150818 U JP H02150818U
Authority
JP
Japan
Prior art keywords
oscillator
oscillation
grounded
field effect
effect transistor
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
Application number
JP5922089U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP5922089U priority Critical patent/JPH02150818U/ja
Publication of JPH02150818U publication Critical patent/JPH02150818U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの考案の実施例を示す回路図、第2
図は第1図の実施例の周波数切り替えモードに対
する制御信号レベルの対応を示す図、第3図は従
来の周波数切り替え機能付発振器の回路図、第4
図は第3図の発振器の周波数切り替えモードに対
する制御信号レベルの対応を示す図である。
Figure 1 is a circuit diagram showing an embodiment of this invention, Figure 2 is a circuit diagram showing an embodiment of this invention.
The figures show the correspondence of the control signal level to the frequency switching mode of the embodiment shown in Fig. 1, Fig. 3 is a circuit diagram of a conventional oscillator with frequency switching function, and Fig. 4
The figure is a diagram showing the correspondence of the control signal level to the frequency switching mode of the oscillator in FIG. 3.

Claims (1)

【実用新案登録請求の範囲】 発振器本体と、発振用共振回路と、周波数調整
用コンデンサと、バイポーラトランジスタと、電
界効果トランジスタとを有する発振器において、 上記発振用共振回路は、その一端が上記発振器
本体に接続されると共に上記周波数調整用コンデ
ンサ及び上記バイポーラトランジスタのコレクタ
、エミツタ間を順次通じて接地され、一方上記発
振用共振回路の他端は接地され、 上記バイポーラトランジスタのベースは、第1
抵抗器を通じて接地されると共に第2抵抗器及び
上記電界効果トランジスタのドレイン、ソース間
を順次通じて直流電源端子に接続され、 上記電界効果トランジスタのゲートに供給する
制御電圧がオン、オフされて、発振周波数が切り
替えられることを特徴とする、 周波数切り替え機能付発振器。
[Claims for Utility Model Registration] In an oscillator having an oscillator body, an oscillation resonance circuit, a frequency adjustment capacitor, a bipolar transistor, and a field effect transistor, one end of the oscillation resonance circuit is connected to the oscillator body. and is grounded through the frequency adjustment capacitor and the collector and emitter of the bipolar transistor in sequence, while the other end of the oscillation resonant circuit is grounded, and the base of the bipolar transistor is connected to the first
grounded through a resistor, and connected to a DC power supply terminal through a second resistor and the drain and source of the field effect transistor in order, and a control voltage supplied to the gate of the field effect transistor is turned on and off; An oscillator with a frequency switching function, characterized in that the oscillation frequency can be switched.
JP5922089U 1989-05-22 1989-05-22 Pending JPH02150818U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5922089U JPH02150818U (en) 1989-05-22 1989-05-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5922089U JPH02150818U (en) 1989-05-22 1989-05-22

Publications (1)

Publication Number Publication Date
JPH02150818U true JPH02150818U (en) 1990-12-27

Family

ID=31585526

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5922089U Pending JPH02150818U (en) 1989-05-22 1989-05-22

Country Status (1)

Country Link
JP (1) JPH02150818U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007208538A (en) * 2006-01-31 2007-08-16 Fujitsu Ltd Resonator type oscillator and tuning capacitor circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007208538A (en) * 2006-01-31 2007-08-16 Fujitsu Ltd Resonator type oscillator and tuning capacitor circuit
JP4676894B2 (en) * 2006-01-31 2011-04-27 富士通株式会社 Resonator type oscillator and tuning capacitor circuit

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