JPS54157461A - Self-oscillator circuit - Google Patents

Self-oscillator circuit

Info

Publication number
JPS54157461A
JPS54157461A JP6687278A JP6687278A JPS54157461A JP S54157461 A JPS54157461 A JP S54157461A JP 6687278 A JP6687278 A JP 6687278A JP 6687278 A JP6687278 A JP 6687278A JP S54157461 A JPS54157461 A JP S54157461A
Authority
JP
Japan
Prior art keywords
oscillation
minimum natural
piezoelectric element
output voltage
oscillator circuit
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
JP6687278A
Other languages
Japanese (ja)
Other versions
JPS5946446B2 (en
Inventor
Masaaki Miyazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP53066872A priority Critical patent/JPS5946446B2/en
Publication of JPS54157461A publication Critical patent/JPS54157461A/en
Publication of JPS5946446B2 publication Critical patent/JPS5946446B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
    • H03K3/03—Astable circuits
    • H03K3/0307—Stabilisation of output, e.g. using crystal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To secure the steady operation with the minimum natural oscillation number of the piezoelectric element by applying the electric field to accelerate the piezoelectric element only in case the piezoelectric element starts oscillation with its minimum natural oscillation number. CONSTITUTION:In case the oscillator circuit has oscillation with the frequency equivalent to the minimum natural oscillation of piezoelectric element 8, output voltage V5 of monostable multivibrator 10 is synchronized with the fall of output voltae V1 of voltage comparator 1. And the time T2 is less than low-level time T1 of V1, and thus output voltage V4 of AND circuit 9 is identical to V1. Accordingly, multivibrator 10 does not affect the self-oscillator circuit. When element 8 has oscillation with the frequency other than the minimum natural vibration, V1 has a rise earlier than V5. However, circuit 9 does not feature the high level for V4 unless both V1 and V5 feature the high levels. Thus, the oscillation of V4 is not accelerated even though element 8 tried to start oscillation with the frequency other than the minimum natural oscillation. In this connection, the output voltage pulse duration of 10 is selected properly to attain the purpose.
JP53066872A 1978-06-01 1978-06-01 self-excited oscillation circuit Expired JPS5946446B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53066872A JPS5946446B2 (en) 1978-06-01 1978-06-01 self-excited oscillation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53066872A JPS5946446B2 (en) 1978-06-01 1978-06-01 self-excited oscillation circuit

Publications (2)

Publication Number Publication Date
JPS54157461A true JPS54157461A (en) 1979-12-12
JPS5946446B2 JPS5946446B2 (en) 1984-11-13

Family

ID=13328380

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53066872A Expired JPS5946446B2 (en) 1978-06-01 1978-06-01 self-excited oscillation circuit

Country Status (1)

Country Link
JP (1) JPS5946446B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1005895C2 (en) * 1997-04-24 1998-10-27 Univ Delft Tech Resonator with a selection circuit for selecting a resonance mode.
WO2016031963A1 (en) * 2014-08-29 2016-03-03 株式会社村田製作所 Oscillator circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1005895C2 (en) * 1997-04-24 1998-10-27 Univ Delft Tech Resonator with a selection circuit for selecting a resonance mode.
WO1998048511A1 (en) * 1997-04-24 1998-10-29 Technische Universiteit Delft Resonator having a selection circuit for selecting a resonance mode
US6225872B1 (en) 1997-04-24 2001-05-01 Technische Universiteit Delft Resonator having a selection circuit for selecting a resonance mode
WO2016031963A1 (en) * 2014-08-29 2016-03-03 株式会社村田製作所 Oscillator circuit

Also Published As

Publication number Publication date
JPS5946446B2 (en) 1984-11-13

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