JPS571210A - Differential detector - Google Patents

Differential detector

Info

Publication number
JPS571210A
JPS571210A JP7420780A JP7420780A JPS571210A JP S571210 A JPS571210 A JP S571210A JP 7420780 A JP7420780 A JP 7420780A JP 7420780 A JP7420780 A JP 7420780A JP S571210 A JPS571210 A JP S571210A
Authority
JP
Japan
Prior art keywords
primary
bobbin
slit
constitution
wound
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
JP7420780A
Other languages
Japanese (ja)
Inventor
Taro Oshiro
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.)
NOBLE SANGYO KK
NOOBURU SANGYO KK
Original Assignee
NOBLE SANGYO KK
NOOBURU SANGYO KK
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 NOBLE SANGYO KK, NOOBURU SANGYO KK filed Critical NOBLE SANGYO KK
Priority to JP7420780A priority Critical patent/JPS571210A/en
Publication of JPS571210A publication Critical patent/JPS571210A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE:To conduct the measurement of the displacement of a member to be detected advantageously by a method wherein a moving core mounted inside a bobbin on which primary and secondary coils are wound or a moving case attached outside the bobbin is formed by low permeable conductive metal, and high-frequency exciting currents are flowed through the primary coil. CONSTITUTION:The primary and secondary coils 16, 18 and 16, 19 are each wound in two grooves 13, 14 with the same dimensions for winding the coils of the nonmagnetic plastic hollow bobbin 11 to which the grooves 13, 14 and a slit 15 in the axial direction drawing a coil outgoing line are mounted, and primary and secondary outgoing lines 17, 20, 21 are drawn up to end sections by utilizing the inside of the slit 15. The moving core 22 supported by a plastic supporting bar 23 constituting the member to be detected is attached into a hollow hole 12 of the bobbin 11, and a differential detector is formed. In this constitution, the low permeable material of 10<-3>-10<-6> of specific magnetic permeability is used as the core 22, and the frequency of exciting currents applied to the primary coil 16 is also elevated up to approximately 50KC-2MC, and functioning to minute displacement is improved.
JP7420780A 1980-06-04 1980-06-04 Differential detector Pending JPS571210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7420780A JPS571210A (en) 1980-06-04 1980-06-04 Differential detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7420780A JPS571210A (en) 1980-06-04 1980-06-04 Differential detector

Publications (1)

Publication Number Publication Date
JPS571210A true JPS571210A (en) 1982-01-06

Family

ID=13540505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7420780A Pending JPS571210A (en) 1980-06-04 1980-06-04 Differential detector

Country Status (1)

Country Link
JP (1) JPS571210A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59105516A (en) * 1982-12-09 1984-06-18 Saburo Nakagoori Differential transformer
JPS60170702A (en) * 1984-02-16 1985-09-04 S G:Kk Linear position detector and manufacture of rod part of detector
US4717874A (en) * 1984-02-10 1988-01-05 Kabushiki Kaisha Sg Reluctance type linear position detection device
JP2001066103A (en) * 1999-08-30 2001-03-16 Hisashi Ando Displacement detector applying helmholtz coil
WO2003021183A1 (en) * 2001-08-31 2003-03-13 Mitsubishi Denki Kabushiki Kaisha Displacement sensor and solenoid valve driver

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4811552U (en) * 1971-06-22 1973-02-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4811552U (en) * 1971-06-22 1973-02-08

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59105516A (en) * 1982-12-09 1984-06-18 Saburo Nakagoori Differential transformer
US4717874A (en) * 1984-02-10 1988-01-05 Kabushiki Kaisha Sg Reluctance type linear position detection device
JPS60170702A (en) * 1984-02-16 1985-09-04 S G:Kk Linear position detector and manufacture of rod part of detector
JP2001066103A (en) * 1999-08-30 2001-03-16 Hisashi Ando Displacement detector applying helmholtz coil
WO2003021183A1 (en) * 2001-08-31 2003-03-13 Mitsubishi Denki Kabushiki Kaisha Displacement sensor and solenoid valve driver
US6916005B2 (en) 2001-08-31 2005-07-12 Mitsubishi Denki Kabushiki Kaisha Displacement sensor and solenoid valve driver

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