JPS57101726A - Driving method of piezoelectric oscillator - Google Patents

Driving method of piezoelectric oscillator

Info

Publication number
JPS57101726A
JPS57101726A JP17860780A JP17860780A JPS57101726A JP S57101726 A JPS57101726 A JP S57101726A JP 17860780 A JP17860780 A JP 17860780A JP 17860780 A JP17860780 A JP 17860780A JP S57101726 A JPS57101726 A JP S57101726A
Authority
JP
Japan
Prior art keywords
piezoelectric oscillator
transistor
turned
voltage
terminals
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
JP17860780A
Other languages
Japanese (ja)
Inventor
Tadashi Azegami
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.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin 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 Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP17860780A priority Critical patent/JPS57101726A/en
Publication of JPS57101726A publication Critical patent/JPS57101726A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • B06B1/023—Driving circuits for generating signals continuous in time and stepped in amplitude, e.g. square wave, 2-level signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/50—Application to a particular transducer type
    • B06B2201/55—Piezoelectric transducer

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To drive a piezoelectric oscillator without turning on an output step transistor at the same time, by giving electric force to the piezoelectric oscillator at a duty ratio of less than 1 every half cycle. CONSTITUTION:In case when a signal of ''1'' is given to First input terminals of AND gates 7 and 7 and a clock signal is given to CL terminal of FF6, signals are put out from output terminals of the AND gates 7 and 8 to be shown respectively to e end f. As a result, output step transistors 12 and 15 become turned on alternately at a prescribed interval, and a voltage as shown in g is impressed onto a primary coil 17a of an output transformer 17. As a piezoelectric oscillator 5 shows a capacitive load characteristic, in case if the voltage shown in g is impressed onto the coil 17a, an almost rectangular voltage as shown in h is obtained between the both terminals of the piezoelectric oscillator 5. On the other hand, the transistors 12 and 15 are turned on alternately at a prescribed interval, base current of the transistor 12 becomes zero, and after a collector current becomes zero, the other transistor 15 is turned on.
JP17860780A 1980-12-17 1980-12-17 Driving method of piezoelectric oscillator Pending JPS57101726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17860780A JPS57101726A (en) 1980-12-17 1980-12-17 Driving method of piezoelectric oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17860780A JPS57101726A (en) 1980-12-17 1980-12-17 Driving method of piezoelectric oscillator

Publications (1)

Publication Number Publication Date
JPS57101726A true JPS57101726A (en) 1982-06-24

Family

ID=16051404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17860780A Pending JPS57101726A (en) 1980-12-17 1980-12-17 Driving method of piezoelectric oscillator

Country Status (1)

Country Link
JP (1) JPS57101726A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1881469A1 (en) * 2005-05-10 2008-01-23 Hochiki Corporation Warning output device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1881469A1 (en) * 2005-05-10 2008-01-23 Hochiki Corporation Warning output device
EP1881469A4 (en) * 2005-05-10 2008-11-19 Hochiki Co Warning output device

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