SE9102147L - CUTTING DEVICE MAKES AN INDUCTIVE SIGNAL RECORDING DEVICE - Google Patents

CUTTING DEVICE MAKES AN INDUCTIVE SIGNAL RECORDING DEVICE

Info

Publication number
SE9102147L
SE9102147L SE9102147A SE9102147A SE9102147L SE 9102147 L SE9102147 L SE 9102147L SE 9102147 A SE9102147 A SE 9102147A SE 9102147 A SE9102147 A SE 9102147A SE 9102147 L SE9102147 L SE 9102147L
Authority
SE
Sweden
Prior art keywords
signal
interference
frequency
suppression
coil
Prior art date
Application number
SE9102147A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9102147D0 (en
SE467375B (en
Inventor
J Frilund
Original Assignee
Ema Instr Ab
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 Ema Instr Ab filed Critical Ema Instr Ab
Priority to SE9102147A priority Critical patent/SE467375B/en
Publication of SE9102147D0 publication Critical patent/SE9102147D0/en
Publication of SE9102147L publication Critical patent/SE9102147L/en
Publication of SE467375B publication Critical patent/SE467375B/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • 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

Landscapes

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

Abstract

In the inductive measurement of signals at a defined frequency or in a defined frequency range, the external electromagnetic interference can be stronger than the signal A to be measured. This problem has been solved by an interference-suppression coil 3 being wound around or parallel to and essentially along the entire length of a signal-receiving coil 2, the coils 2, 3 surrounding the same signal source. One end of the interference- suppression coil 3 is electrically connected to the opposite end of the signal-receiving coil 2, while the other end of the interference-suppression coil is connected to earth, suitably via an electrically passive component 4, for example in the form of a capacitor. The passive component 4 is selected according to the properties of the two coils 2, 3 so that the system has a resonant frequency which corresponds to the frequency content of the signal A. The interference-suppression arrangement will thus damp out all frequencies apart from the signal frequency. <IMAGE>
SE9102147A 1991-07-09 1991-07-09 Interference-suppression arrangement for an inductive signal-receiving arrangement SE467375B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9102147A SE467375B (en) 1991-07-09 1991-07-09 Interference-suppression arrangement for an inductive signal-receiving arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9102147A SE467375B (en) 1991-07-09 1991-07-09 Interference-suppression arrangement for an inductive signal-receiving arrangement

Publications (3)

Publication Number Publication Date
SE9102147D0 SE9102147D0 (en) 1991-07-09
SE9102147L true SE9102147L (en) 1992-07-06
SE467375B SE467375B (en) 1992-07-06

Family

ID=20383306

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9102147A SE467375B (en) 1991-07-09 1991-07-09 Interference-suppression arrangement for an inductive signal-receiving arrangement

Country Status (1)

Country Link
SE (1) SE467375B (en)

Also Published As

Publication number Publication date
SE9102147D0 (en) 1991-07-09
SE467375B (en) 1992-07-06

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