FI801932A - Elektrostatisk skaerm - Google Patents

Elektrostatisk skaerm

Info

Publication number
FI801932A
FI801932A FI801932A FI801932A FI801932A FI 801932 A FI801932 A FI 801932A FI 801932 A FI801932 A FI 801932A FI 801932 A FI801932 A FI 801932A FI 801932 A FI801932 A FI 801932A
Authority
FI
Finland
Prior art keywords
electrostatic load
electrostatic
load
Prior art date
Application number
FI801932A
Other languages
English (en)
Other versions
FI72632B (fi
FI72632C (fi
Inventor
Valentino Francesco Vescovi
Arthur Wilkie Richards
Original Assignee
Sphere Invest
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 Sphere Invest filed Critical Sphere Invest
Publication of FI801932A publication Critical patent/FI801932A/fi
Publication of FI72632B publication Critical patent/FI72632B/fi
Application granted granted Critical
Publication of FI72632C publication Critical patent/FI72632C/fi

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/002—Casings with localised screening
    • H05K9/0039—Galvanic coupling of ground layer on printed circuit board [PCB] to conductive casing

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Details Of Measuring And Other Instruments (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Regulation Of General Use Transformers (AREA)
FI801932A 1979-06-19 1980-06-16 Elektrostatisk skaermad ledarenhet. FI72632C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA793030 1979-06-19
ZA7903030 1979-06-19

Publications (3)

Publication Number Publication Date
FI801932A true FI801932A (fi) 1980-12-20
FI72632B FI72632B (fi) 1987-02-27
FI72632C FI72632C (fi) 1987-06-08

Family

ID=25574119

Family Applications (1)

Application Number Title Priority Date Filing Date
FI801932A FI72632C (fi) 1979-06-19 1980-06-16 Elektrostatisk skaermad ledarenhet.

Country Status (9)

Country Link
US (1) US4451812A (fi)
JP (1) JPS5612799A (fi)
AU (2) AU5880780A (fi)
CA (1) CA1138084A (fi)
DE (1) DE3021164A1 (fi)
FI (1) FI72632C (fi)
FR (1) FR2459537A1 (fi)
GB (1) GB2057136B (fi)
SE (1) SE8004255L (fi)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151028B (en) * 1983-11-14 1987-03-04 Schlumberger Ltd Shielded solenoid coil for well-logging
US4739272A (en) * 1984-05-31 1988-04-19 Schlumberger Technology Corporation Apparatus for microinductive investigation of earth formations with improved electroquasistatic shielding
US4797614A (en) * 1984-11-02 1989-01-10 Sierracin Corporation Apparatus and method for measuring conductance including a temperature controlled resonant tank circuit with shielding
DE3524242A1 (de) * 1985-07-06 1987-01-08 Philips Patentverwaltung Kuehlanordnung fuer waermeabgebende elektrische bauteile
CH672383A5 (fi) * 1986-10-29 1989-11-15 Baumer Electric Ag
GB2232254A (en) * 1989-05-30 1990-12-05 Barkley & Dexter Lab Inc Search coil assembly for metal detectors and method for making such an assembly
DE3920081A1 (de) * 1989-06-20 1991-01-03 Foerster Inst Dr Friedrich Suchspulenanordnung
US5066937A (en) * 1990-06-24 1991-11-19 Barkley & Dexter Laboratories Search coil assembly with laminate frame members and method for making same
GB9014496D0 (en) * 1990-06-29 1990-08-22 Safeline Ltd Metal detectors
US5126714A (en) * 1990-12-20 1992-06-30 The United States Of America As Represented By The Secretary Of The Navy Integrated circuit transformer
KR19990028418A (ko) * 1995-06-23 1999-04-15 세모스 로버트 어니스트 빅커스 레이저 드라이버
US5781077A (en) * 1997-01-28 1998-07-14 Burr-Brown Corporation Reducing transformer interwinding capacitance
FR2771233B1 (fr) * 1997-11-18 2000-01-28 Sgs Thomson Microelectronics Bobine d'antenne a champ electrique reduit
EP2392017A1 (en) * 2009-01-30 2011-12-07 Hbcc Pty Ltd High frequency transformers
EP2439560B1 (en) 2010-10-07 2013-05-29 Mettler-Toledo Safeline Limited Method for monitoring the operation of a metal detection system and metal detection system
EP2439559B1 (en) 2010-10-07 2013-05-29 Mettler-Toledo Safeline Limited Method for operating of a metal detection system and metal detection system
US8587301B2 (en) 2010-10-07 2013-11-19 Mettler-Toledo Safeline Limited Method for operating a metal detection system and metal detection system
US9018935B2 (en) 2011-09-19 2015-04-28 Mettler-Toledo Safeline Limited Method for operating a metal detection apparatus and apparatus
EP2904428A2 (en) * 2012-10-04 2015-08-12 Niitek, Inc. Shieldings for metal detector heads and manufacturing methods thereof
US11519941B2 (en) 2020-07-27 2022-12-06 Analog Devices International Unlimited Company Current sensing device having an integrated electrical shield
EP4387408A1 (en) * 2022-12-13 2024-06-19 Hitachi Energy Ltd An electrostatic shielding element, an electrostatic shielding arrangement and a transformer arrangement comprising the electrostatic shielding arrangement

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE129022C (fi) *
US1942575A (en) * 1922-11-03 1934-01-09 Rca Corp Electrostatic shielding material
US1651922A (en) * 1925-09-18 1927-12-06 Hughes Benjamin Shield for use with electrical appliances
FR844426A (fr) * 1938-04-01 1939-07-25 Transformateur de couplage antiparasite et ses applications
US2234998A (en) * 1938-12-06 1941-03-18 Robert H Worrall Electrical shield
US2786984A (en) * 1952-12-30 1957-03-26 Du Mont Allen B Lab Inc Printed-circuit shield
DE1638564A1 (de) * 1967-04-07 1970-11-05 Siemens Ag Vorrichtung zur Abschirmung von Streufeldern
FR2232046B1 (fi) * 1973-06-04 1978-01-06 Ducros Emile
FR2308030A1 (fr) * 1975-04-15 1976-11-12 Dunlop Sa Joint en elastomere, permettant d'assurer la continuite electrique
JPS528423A (en) * 1975-07-11 1977-01-22 Hitachi Ltd Magnetic shield device of static induction electric instrument

Also Published As

Publication number Publication date
FI72632B (fi) 1987-02-27
GB2057136B (en) 1984-01-04
JPS5612799A (en) 1981-02-07
AU5880780A (en) 1981-01-08
DE3021164A1 (de) 1981-01-08
CA1138084A (en) 1982-12-21
AU535599B1 (en) 1984-03-29
FR2459537B1 (fi) 1985-03-15
SE8004255L (sv) 1980-12-20
FI72632C (fi) 1987-06-08
GB2057136A (en) 1981-03-25
US4451812A (en) 1984-05-29
FR2459537A1 (fr) 1981-01-09

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: SPHERE INVESTMENTS LIMITED