CA1010979A - Magnetic field shielding for acoustic noise control - Google Patents

Magnetic field shielding for acoustic noise control

Info

Publication number
CA1010979A
CA1010979A CA181,059A CA181059A CA1010979A CA 1010979 A CA1010979 A CA 1010979A CA 181059 A CA181059 A CA 181059A CA 1010979 A CA1010979 A CA 1010979A
Authority
CA
Canada
Prior art keywords
magnetic field
noise control
acoustic noise
field shielding
shielding
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.)
Expired
Application number
CA181,059A
Other languages
English (en)
Other versions
CA181059S (en
Inventor
Bing L. Yip
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.)
IBM Canada Ltd
Original Assignee
IBM Canada Ltd
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 IBM Canada Ltd filed Critical IBM Canada Ltd
Priority to CA181,059A priority Critical patent/CA1010979A/en
Priority to IT25096/74A priority patent/IT1017110B/it
Priority to FR7426332A priority patent/FR2244245A1/fr
Priority to CH1163874A priority patent/CH571760A5/xx
Priority to DE2441547A priority patent/DE2441547A1/de
Priority to JP49103970A priority patent/JPS5055827A/ja
Priority to ES430022A priority patent/ES430022A1/es
Application granted granted Critical
Publication of CA1010979A publication Critical patent/CA1010979A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/33—Arrangements for noise damping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Housings And Mounting Of Transformers (AREA)
CA181,059A 1973-09-14 1973-09-14 Magnetic field shielding for acoustic noise control Expired CA1010979A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CA181,059A CA1010979A (en) 1973-09-14 1973-09-14 Magnetic field shielding for acoustic noise control
IT25096/74A IT1017110B (it) 1973-09-14 1974-07-12 Schermatura antirumore in partico lare per trasformatori
FR7426332A FR2244245A1 (en) 1973-09-14 1974-07-25 Noise suppressing screening for power supply transformers - uses perforated steel plate for suppression in quiet rooms e.g. office
CH1163874A CH571760A5 (Direct) 1973-09-14 1974-08-27
DE2441547A DE2441547A1 (de) 1973-09-14 1974-08-30 Geraeuschdaempfende abschirmung fuer netztransformatoren in elektrotechnischen geraeten
JP49103970A JPS5055827A (Direct) 1973-09-14 1974-09-11
ES430022A ES430022A1 (es) 1973-09-14 1974-09-13 Perfeccionamientos introducidos en un dispositivo de blin- daje para inhibir vibraviones audibles en un cuerpo, provo- cadas por un campo magnetico que emana desde una fuente.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA181,059A CA1010979A (en) 1973-09-14 1973-09-14 Magnetic field shielding for acoustic noise control

Publications (1)

Publication Number Publication Date
CA1010979A true CA1010979A (en) 1977-05-24

Family

ID=4097813

Family Applications (1)

Application Number Title Priority Date Filing Date
CA181,059A Expired CA1010979A (en) 1973-09-14 1973-09-14 Magnetic field shielding for acoustic noise control

Country Status (7)

Country Link
JP (1) JPS5055827A (Direct)
CA (1) CA1010979A (Direct)
CH (1) CH571760A5 (Direct)
DE (1) DE2441547A1 (Direct)
ES (1) ES430022A1 (Direct)
FR (1) FR2244245A1 (Direct)
IT (1) IT1017110B (Direct)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5332449U (Direct) * 1976-08-26 1978-03-20
DE2939533C2 (de) * 1979-09-28 1983-08-25 Siemens AG, 1000 Berlin und 8000 München Schallgedämpftes elektrisches Bauelement, insbesondere Drossel
DE8904380U1 (de) * 1989-04-07 1989-05-24 Bosch-Siemens Hausgeräte GmbH, 8000 München Hochspannungstransformator
DE10152468A1 (de) * 2001-10-24 2003-05-08 Bosch Gmbh Robert Leiterplatte für ein Steuergerät, Steckerleiste oder dergleichen

Also Published As

Publication number Publication date
DE2441547A1 (de) 1975-04-24
CH571760A5 (Direct) 1976-01-15
IT1017110B (it) 1977-07-20
ES430022A1 (es) 1976-09-16
FR2244245A1 (en) 1975-04-11
JPS5055827A (Direct) 1975-05-16

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