JP2005072828A5 - - Google Patents

Download PDF

Info

Publication number
JP2005072828A5
JP2005072828A5 JP2003298368A JP2003298368A JP2005072828A5 JP 2005072828 A5 JP2005072828 A5 JP 2005072828A5 JP 2003298368 A JP2003298368 A JP 2003298368A JP 2003298368 A JP2003298368 A JP 2003298368A JP 2005072828 A5 JP2005072828 A5 JP 2005072828A5
Authority
JP
Japan
Prior art keywords
transistor
oscillation circuit
piezoelectric
collector
piezoelectric oscillation
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
Application number
JP2003298368A
Other languages
Japanese (ja)
Other versions
JP2005072828A (en
JP4214863B2 (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2003298368A priority Critical patent/JP4214863B2/en
Priority claimed from JP2003298368A external-priority patent/JP4214863B2/en
Publication of JP2005072828A publication Critical patent/JP2005072828A/en
Publication of JP2005072828A5 publication Critical patent/JP2005072828A5/ja
Application granted granted Critical
Publication of JP4214863B2 publication Critical patent/JP4214863B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Claims (5)

トランジスタ２段によるコルピッツ型の圧電発振回路であって、圧電振動子と第１のトランジスタとを有し発振信号を出力する発振部と、第２のトランジスタを有し前記第１のトランジスタのエミッタから出力される発振信号を電流増幅するコレクタ接地回路とを備え、前記第２のトランジスタのエミッタから出力される信号を前記第１のトランジスタのコレクタに正帰還したことを特徴とする圧電発振回路。A Colpitts-type piezoelectric oscillation circuit having two stages of transistors, an oscillation unit having a piezoelectric vibrator and a first transistor and outputting an oscillation signal, a second transistor, and an emitter of the first transistor A piezoelectric oscillation circuit comprising: a grounded collector circuit for amplifying a current of an output oscillation signal, and positively feeding back a signal output from the emitter of the second transistor to the collector of the first transistor. 前記圧電発振回路の出力を前記第１のトランジスタのコレクタより取出したことを特徴とする請求項１に記載の圧電発振回路。2. The piezoelectric oscillation circuit according to claim 1, wherein an output of the piezoelectric oscillation circuit is taken out from a collector of the first transistor. 前記圧電発振回路の出力を前記第２のトランジスタのエミッタより取出したことを特徴とする請求項１記載の圧電発振回路。2. The piezoelectric oscillation circuit according to claim 1, wherein an output of the piezoelectric oscillation circuit is taken out from an emitter of the second transistor. 前記第１のトランジスタのコレクタが、コレクタ抵抗を介さずに電源に接続されていることを特徴とする請求項３に記載の圧電発振回路。4. The piezoelectric oscillation circuit according to claim 3, wherein the collector of the first transistor is connected to a power source without going through a collector resistor. 前記圧電振動子を水晶振動子またはＳＡＷ共振子としたことを特徴とする請求項１、請求項２、請求項３、または請求項４のいずれかに記載の圧電発振回路。5. The piezoelectric oscillation circuit according to claim 1, wherein the piezoelectric vibrator is a crystal vibrator or a SAW resonator.
JP2003298368A 2003-08-22 2003-08-22 Piezoelectric oscillation circuit Expired - Fee Related JP4214863B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003298368A JP4214863B2 (en) 2003-08-22 2003-08-22 Piezoelectric oscillation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003298368A JP4214863B2 (en) 2003-08-22 2003-08-22 Piezoelectric oscillation circuit

Publications (3)

Publication Number Publication Date
JP2005072828A JP2005072828A (en) 2005-03-17
JP2005072828A5 true JP2005072828A5 (en) 2006-09-28
JP4214863B2 JP4214863B2 (en) 2009-01-28

Family

ID=34403880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003298368A Expired - Fee Related JP4214863B2 (en) 2003-08-22 2003-08-22 Piezoelectric oscillation circuit

Country Status (1)

Country Link
JP (1) JP4214863B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007150461A (en) * 2005-11-24 2007-06-14 Nippon Dempa Kogyo Co Ltd Colpitts oscillation circuit
JP2007221197A (en) * 2006-02-14 2007-08-30 Seiko Epson Corp Oscillation circuit
JP5146168B2 (en) * 2007-09-05 2013-02-20 セイコーエプソン株式会社 Oscillator and electronic device equipped with the oscillator
JP4764917B2 (en) * 2008-12-24 2011-09-07 日本電波工業株式会社 High frequency Colpitts circuit

Similar Documents

Publication Publication Date Title
MXPA02006606A (en) Torsional ultrasonic handpiece.
DE69723945D1 (en) Active noise conditioning arrangement
JP2001170066A (en) Ultrasonic treatment tool
JP2002204128A (en) Oscillation circuit and integrated circuit for oscillation
DE59000126D1 (en) ULTRASONIC RESONATOR.
EP1220440A3 (en) Apparatus and method for reducing phase noise in oscillator circuits
JPS6151000U (en)
JP2005072828A5 (en)
KR970024508A (en) Oscillation Circuit and Oscillation Method
EP1102391A3 (en) Piezoelectric oscillator and electronic device using it
JP2000332593A5 (en)
KR101204766B1 (en) Method and circuit of the electronic horn driving signal frequency adjusted by capacitance
CN206282605U (en) A kind of piezo buzzer drive circuit
JP3950654B2 (en) Pseudo cubic function generator
EP0940863A3 (en) Ultrasonic motor and electronic apparatus having an ultrasonic motor
JP2001345644A (en) Oscillation circuit
JPH0611619Y2 (en) Oscillator circuit
JP2007178298A (en) Oscillatory type inertial force detection sensor
KR950001105Y1 (en) Direction indicator device for vehicle
EP1096664A3 (en) Oscillator with buffer circuit in which deterioration in c/n ration is lightened
JPS595914Y2 (en) Piezoelectric buzzer with piezoelectric switch
KR920020372A (en) Emergency signal
JP2000269760A5 (en)
JPS6012616Y2 (en) Ultrasonic transducer drive circuit
JP2005079648A (en) Oscillation circuit and semiconductor integrated circuit