JPS57204413A - Differential detector - Google Patents

Differential detector

Info

Publication number
JPS57204413A
JPS57204413A JP9047681A JP9047681A JPS57204413A JP S57204413 A JPS57204413 A JP S57204413A JP 9047681 A JP9047681 A JP 9047681A JP 9047681 A JP9047681 A JP 9047681A JP S57204413 A JPS57204413 A JP S57204413A
Authority
JP
Japan
Prior art keywords
core
differential
generated
coated
primary coil
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
JP9047681A
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 JP9047681A priority Critical patent/JPS57204413A/en
Publication of JPS57204413A publication Critical patent/JPS57204413A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
    • G01D5/225—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils
    • G01D5/2258—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils by a movable ferromagnetic element, e.g. core

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE:To elevate durability of a differential detector, by coating a core, etc. of a differential transfer which has utilized an overcurrent loss of low magnetic permeability, with a nonmetal. CONSTITUTION:To a bobbin 11, a primary coil 16 and secondary coils 18, 19 are wound, and a core 22 being a low magnetic permeability metal such such as silver, copper, aluminum, etc. moves in a hollow hole 12. The metallic body 22 is coated 24 with fluoroplastics, etc. extending over the whole body. In this regard, it is desirable that the core is coated with a nonconductive substance 22. When the core 22 is moved to the right and left, a magnetic line of force generated from the primary coil 16 becomes an overcurrent loss by the core 22, and a difference is generated in voltage generated in the coils 18, 19. By this differential voltage, displacement of the core 22 can be detected.
JP9047681A 1981-06-12 1981-06-12 Differential detector Pending JPS57204413A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9047681A JPS57204413A (en) 1981-06-12 1981-06-12 Differential detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9047681A JPS57204413A (en) 1981-06-12 1981-06-12 Differential detector

Publications (1)

Publication Number Publication Date
JPS57204413A true JPS57204413A (en) 1982-12-15

Family

ID=13999628

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9047681A Pending JPS57204413A (en) 1981-06-12 1981-06-12 Differential detector

Country Status (1)

Country Link
JP (1) JPS57204413A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02144716U (en) * 1989-05-10 1990-12-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02144716U (en) * 1989-05-10 1990-12-07

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