JPH0486315U - - Google Patents

Info

Publication number
JPH0486315U
JPH0486315U JP12942090U JP12942090U JPH0486315U JP H0486315 U JPH0486315 U JP H0486315U JP 12942090 U JP12942090 U JP 12942090U JP 12942090 U JP12942090 U JP 12942090U JP H0486315 U JPH0486315 U JP H0486315U
Authority
JP
Japan
Prior art keywords
oscillation
transistor
frequency
circuit
crystal
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
JP12942090U
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 JP12942090U priority Critical patent/JPH0486315U/ja
Publication of JPH0486315U publication Critical patent/JPH0486315U/ja
Pending legal-status Critical Current

Links

Description

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

第１図は本考案の一実施例を示す回路図、第２
図は従来の周波数可変型の水晶発振器の一例を示
す回路図、第３図は従来の周波数可変型の水晶発
振器の他の一例を示す回路図である。 ２……水晶振動子、３……コイル、４……可変
コンデンサ、２０……無調整発振回路、２２……
トランジスタ、２３……チヨークコイル、２４…
…同調回路。 Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing an example of a conventional variable frequency crystal oscillator, and FIG. 3 is a circuit diagram showing another example of a conventional variable frequency crystal oscillator. 2... Crystal resonator, 3... Coil, 4... Variable capacitor, 20... Unadjusted oscillation circuit, 22...
Transistor, 23...Chiyoke coil, 24...
...tuned circuit.

Claims (1)

【実用新案登録請求の範囲】 変形コルピツツ型の無調整水晶発振回路と、 この発振回路の水晶振動子に直列に接続したイ
ンダクタンスおよび発振周波数を可変させる可変
コンデンサと、 上記発振回路の発振出力をベースに与えられて
逓倍するエミツタ接地のトランジスタと、 このトランジスタのベースと基準電位との間に
介挿した高周波チヨークと、 上記トランジスタのコレクタに接続した上記水
晶振動子のオーバトーンの周波数に同調した同調
回路と、 を具備することを特徴とする水晶発振器。[Claims for Utility Model Registration] A modified Colpitts type unadjusted crystal oscillation circuit, a variable capacitor connected in series to the crystal resonator of this oscillation circuit to vary the inductance and oscillation frequency, and an oscillation output based on the oscillation output of the above oscillation circuit. A transistor whose emitter is grounded and multiplies the voltage given to it, a high-frequency choke inserted between the base of this transistor and a reference potential, and a tuning tuned to the frequency of the overtone of the crystal oscillator connected to the collector of the transistor. A crystal oscillator comprising: a circuit;
JP12942090U 1990-11-30 1990-11-30 Pending JPH0486315U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12942090U JPH0486315U (en) 1990-11-30 1990-11-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12942090U JPH0486315U (en) 1990-11-30 1990-11-30

Publications (1)

Publication Number Publication Date
JPH0486315U true JPH0486315U (en) 1992-07-27

Family

ID=31876820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12942090U Pending JPH0486315U (en) 1990-11-30 1990-11-30

Country Status (1)

Country Link
JP (1) JPH0486315U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0637543A (en) * 1992-07-16 1994-02-10 Asahi Denpa Kk Quartz oscillation circuit
JP2013093785A (en) * 2011-10-27 2013-05-16 Seiko Epson Corp Oscillator circuit, oscillator, electronic apparatus and start-up method of oscillator circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5213763B2 (en) * 1973-08-08 1977-04-16
JPS5271963A (en) * 1975-12-12 1977-06-15 Hitachi Ltd Oscillator circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5213763B2 (en) * 1973-08-08 1977-04-16
JPS5271963A (en) * 1975-12-12 1977-06-15 Hitachi Ltd Oscillator circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0637543A (en) * 1992-07-16 1994-02-10 Asahi Denpa Kk Quartz oscillation circuit
JP2013093785A (en) * 2011-10-27 2013-05-16 Seiko Epson Corp Oscillator circuit, oscillator, electronic apparatus and start-up method of oscillator circuit

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