JPH0435694B2 - - Google Patents

Info

Publication number
JPH0435694B2
JPH0435694B2 JP56116439A JP11643981A JPH0435694B2 JP H0435694 B2 JPH0435694 B2 JP H0435694B2 JP 56116439 A JP56116439 A JP 56116439A JP 11643981 A JP11643981 A JP 11643981A JP H0435694 B2 JPH0435694 B2 JP H0435694B2
Authority
JP
Japan
Prior art keywords
piezoelectric vibrator
transistor
piezoelectric
oscillation
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.)
Expired - Lifetime
Application number
JP56116439A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5818125A (ja
Inventor
Satonori Shigihara
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Priority to JP56116439A priority Critical patent/JPS5818125A/ja
Publication of JPS5818125A publication Critical patent/JPS5818125A/ja
Publication of JPH0435694B2 publication Critical patent/JPH0435694B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
JP56116439A 1981-07-27 1981-07-27 物体検知装置 Granted JPS5818125A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56116439A JPS5818125A (ja) 1981-07-27 1981-07-27 物体検知装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56116439A JPS5818125A (ja) 1981-07-27 1981-07-27 物体検知装置

Publications (2)

Publication Number Publication Date
JPS5818125A JPS5818125A (ja) 1983-02-02
JPH0435694B2 true JPH0435694B2 (en]) 1992-06-11

Family

ID=14687128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56116439A Granted JPS5818125A (ja) 1981-07-27 1981-07-27 物体検知装置

Country Status (1)

Country Link
JP (1) JPS5818125A (en])

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63191027A (ja) * 1987-02-03 1988-08-08 Matsushita Electric Ind Co Ltd 水位検知装置
US5438393A (en) * 1992-11-26 1995-08-01 Konica Corporation Powder fluidity detecting apparatus which includes a piezoelectric element

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5659629U (en]) * 1979-10-12 1981-05-21

Also Published As

Publication number Publication date
JPS5818125A (ja) 1983-02-02

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