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JPS5478994A - Electric mechanical conversion element - Google Patents

Electric mechanical conversion element

Info

Publication number
JPS5478994A
JPS5478994A JP14646877A JP14646877A JPS5478994A JP S5478994 A JPS5478994 A JP S5478994A JP 14646877 A JP14646877 A JP 14646877A JP 14646877 A JP14646877 A JP 14646877A JP S5478994 A JPS5478994 A JP S5478994A
Authority
JP
Japan
Prior art keywords
porcelain
temperature
normal
dielectric
accuracy
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
JP14646877A
Other languages
Japanese (ja)
Other versions
JPS5936440B2 (en
Inventor
Yoichi Kodera
Tomosaburo Kitamura
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP52146468A priority Critical patent/JPS5936440B2/en
Priority to CA317,192A priority patent/CA1125343A/en
Priority to GB7846885A priority patent/GB2012106B/en
Priority to NLAANVRAGE7811863,A priority patent/NL185640C/en
Priority to DE19782852795 priority patent/DE2852795A1/en
Priority to FR7834405A priority patent/FR2411533A1/en
Publication of JPS5478994A publication Critical patent/JPS5478994A/en
Publication of JPS5936440B2 publication Critical patent/JPS5936440B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

PURPOSE: To increase the accuracy of positioning adjustment of magnetic head etc. by reducing the residual displacement, through the use of porcelain plate in normal dielectric phase within the operating temperature.
CONSTITUTION: As the electric mechanical conversion element used for high positioning control having high magnetic rod accuracy narrow in the recording track width for VTR etc., the material in which the residual polarization is less and the part comparatively greater dielectric constant is present at normal temperature is utilized as the normal dielectric phase at slightly higher temperature than the Curie temperature of a high dielectric porcelain. As an example, the porcelain plate 11 of a suitable size in which the Curie temperature is about -10°C and the dielectric constant at normal temperature is about 100000 is used, and the element 10 of bimorph construction is constituted by clipping the metal substrate 13 between two porcelain plates forming the electrodes 12a and 12b for the both major planes. The amount of residual displacement due to electrorestriction effect when the polarity of the applied voltage to the element 10 is inverted with the power supply 14, is about 1.4% to the maximum amplitude, and it is less around one digit than utilizing the piezoelectric effect of the ferrodielectric porcelain and the positioning adjustment of head can be made with good accuracy.
COPYRIGHT: (C)1979,JPO&Japio
JP52146468A 1977-12-06 1977-12-06 Electrical/mechanical conversion element Expired JPS5936440B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP52146468A JPS5936440B2 (en) 1977-12-06 1977-12-06 Electrical/mechanical conversion element
CA317,192A CA1125343A (en) 1977-12-06 1978-12-01 Dielectric electro-mechanical transducer
GB7846885A GB2012106B (en) 1977-12-06 1978-12-01 Electro-mechanical transducers
NLAANVRAGE7811863,A NL185640C (en) 1977-12-06 1978-12-05 ELECTROMECHANICAL TRANSDUCENT.
DE19782852795 DE2852795A1 (en) 1977-12-06 1978-12-06 ELECTROMECHANICAL CONVERTER
FR7834405A FR2411533A1 (en) 1977-12-06 1978-12-06 ELECTROMECHANICAL TRANSDUCER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52146468A JPS5936440B2 (en) 1977-12-06 1977-12-06 Electrical/mechanical conversion element

Publications (2)

Publication Number Publication Date
JPS5478994A true JPS5478994A (en) 1979-06-23
JPS5936440B2 JPS5936440B2 (en) 1984-09-04

Family

ID=15408311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52146468A Expired JPS5936440B2 (en) 1977-12-06 1977-12-06 Electrical/mechanical conversion element

Country Status (1)

Country Link
JP (1) JPS5936440B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5528264U (en) * 1978-08-14 1980-02-23
JPS58173260U (en) * 1982-05-13 1983-11-19 日立電子株式会社 Bimorph for VTR etc.
JPS6048259U (en) * 1983-09-10 1985-04-04 株式会社トーキン displacement element
JPS6048260U (en) * 1983-09-10 1985-04-04 株式会社トーキン piezoelectric displacement element
JPS60245286A (en) * 1984-05-21 1985-12-05 Murata Mfg Co Ltd Piezoelectric dispacement element
JP4874419B1 (en) * 2010-12-03 2012-02-15 株式会社アドバンテスト Switch device and test device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5528264U (en) * 1978-08-14 1980-02-23
JPS58173260U (en) * 1982-05-13 1983-11-19 日立電子株式会社 Bimorph for VTR etc.
JPH0211796Y2 (en) * 1982-05-13 1990-04-03
JPS6048259U (en) * 1983-09-10 1985-04-04 株式会社トーキン displacement element
JPS6048260U (en) * 1983-09-10 1985-04-04 株式会社トーキン piezoelectric displacement element
JPS60245286A (en) * 1984-05-21 1985-12-05 Murata Mfg Co Ltd Piezoelectric dispacement element
JP4874419B1 (en) * 2010-12-03 2012-02-15 株式会社アドバンテスト Switch device and test device
US8779751B2 (en) 2010-12-03 2014-07-15 Advantest Corporation Switching apparatus and test apparatus

Also Published As

Publication number Publication date
JPS5936440B2 (en) 1984-09-04

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