GB1367298A - Broadcast interference suppressor chokes - Google Patents

Broadcast interference suppressor chokes

Info

Publication number
GB1367298A
GB1367298A GB4915271A GB4915271A GB1367298A GB 1367298 A GB1367298 A GB 1367298A GB 4915271 A GB4915271 A GB 4915271A GB 4915271 A GB4915271 A GB 4915271A GB 1367298 A GB1367298 A GB 1367298A
Authority
GB
United Kingdom
Prior art keywords
core
mol
per cent
housing
ferrite
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
GB4915271A
Inventor
P Kirmis
H Wagner
H-P Kaiserswerth
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1367298A publication Critical patent/GB1367298A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • 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
    • H01F27/02—Casings
    • H01F27/022—Encapsulation
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/255—Magnetic cores made from particles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00—Fixed inductances not covered by group H01F17/00

Abstract

1367298 Inductors SIEMENS AG 22 Oct 1971 [27 Nov 1970] 49152/71 Heading HIT A suppressor choke comprises a core 1 consisting of at least two annular parts 2, 3, axially stacked within a sealed insulating housing 4, 7, one core part being of laminated silicon steel, and the other of ZnNiCo ferrite. The core parts are potted in elastic resin 6 and the housing is provided with laminar projections on the inside surface to centre the core in the housing. A two layer coil 8 is wound over the housing with the second layer in the opposite direction but in the same sense as the first. One core part 2 may consist of rings of hot or cold rolled siliconcontaining sheet iron and is effective in the attenuation of transients in the low frequency range (5 to 15 kHz). The second core part 3 of ferrite ensures an increasing permeability for the core up to a frequency of 10 MHz. The composition of the ferrite may be 47À55 mol. per cent Fe 2 O 3 , 31À6 mol. per cent ZnO, 20À6 mol. per cent NiO and 0À25 mol. per cent CoO. Quartz may be added to the potting resin to increase its heat conductivity.
GB4915271A 1970-11-27 1971-10-22 Broadcast interference suppressor chokes Expired GB1367298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2058509A DE2058509C3 (en) 1970-11-27 1970-11-27 Radio interference suppression choke against impulse-like interference voltages

Publications (1)

Publication Number Publication Date
GB1367298A true GB1367298A (en) 1974-09-18

Family

ID=5789323

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4915271A Expired GB1367298A (en) 1970-11-27 1971-10-22 Broadcast interference suppressor chokes

Country Status (12)

Country Link
US (1) US3781740A (en)
AT (1) AT314690B (en)
AU (1) AU3617271A (en)
BE (1) BE775903A (en)
CH (1) CH536546A (en)
DE (1) DE2058509C3 (en)
FR (1) FR2115417B1 (en)
GB (1) GB1367298A (en)
IT (1) IT941775B (en)
NL (1) NL7114511A (en)
NO (1) NO133086C (en)
SE (1) SE373975B (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7221902U (en) 1972-06-12 1972-11-16 Siemens Ag FERROMAGNETIC CORE FOR ELECTRIC REACTORS
DE2343377B2 (en) * 1973-08-28 1977-07-07 Siemens AG, 1000 Berlin und 8000 München RADIANT ELIMINATOR
US3867657A (en) * 1974-03-29 1975-02-18 Westinghouse Electric Corp Generator having shielded current transformers positioned therein
DE2505080B2 (en) * 1975-02-07 1979-04-26 Goetz-Udo 6391 Graevenwiesbach Hartmann Radio interference suppression choke and process for their manufacture
DE2721967A1 (en) * 1977-05-14 1978-11-16 Vogt Gmbh & Co Kg SPARK CONDUCTORS FOR PHASE-GATE CONTROLLED SEMI-CONDUCTOR CIRCUITS
JPS6011545B2 (en) * 1977-07-05 1985-03-26 ソニー株式会社 Oscillation transformer for self-excited DC-DC converter
DE2736963C3 (en) * 1977-08-17 1982-09-09 Hartmann, Götz-Udo, 6391 Grävenwiesbach Radio interference suppression choke and process for their manufacture
JPS5591810A (en) * 1978-12-29 1980-07-11 Mitsubishi Electric Corp Zero phase current transformer
DE3324078A1 (en) * 1983-07-04 1985-01-17 Götz-Udo 6391 Grävenwiesbach Hartmann Insulating material housing
US4600911A (en) * 1984-03-20 1986-07-15 Pauwels-Trafo Belgium N.V. Elliptically shaped magnetic core
US4707619A (en) * 1985-02-13 1987-11-17 Maxwell Laboratories, Inc. Saturable inductor switch and pulse compression power supply employing the switch
US4728919A (en) * 1985-11-25 1988-03-01 Siemens Aktiengesellschaft Moisture-tight wound ferrite toroidal core with resin envelope
GB8613314D0 (en) * 1986-06-02 1986-07-09 Era Patents Ltd Microwave apparatus
DE3621573C2 (en) * 1986-06-27 1994-12-08 Siemens Ag Current-compensated radio interference suppression choke
AU5179696A (en) * 1995-03-06 1996-09-23 American Lightwave Systems, Inc. Power takeoff inductor
US5838215A (en) * 1996-02-05 1998-11-17 Motorola, Inc. RF choke with a low Q core formed by sintering ferrous and ferric oxides
DE19608891A1 (en) * 1996-03-07 1997-09-11 Vacuumschmelze Gmbh Toroidal choke for radio interference suppression of semiconductor circuits using the phase control method
EP0794538A1 (en) * 1996-03-07 1997-09-10 Vacuumschmelze GmbH Toroidal core for inductance, in particular for radio interference suppression of phase-controllable semiconductor circuits
AT409703B (en) 1996-12-13 2002-10-25 Haas Franz Waffelmasch METHOD AND DEVICES FOR PRODUCING EDIBLE WAFFLE ROLLS
FR2780548B1 (en) * 1998-06-29 2001-02-23 Alsthom Gec POWER SUPPLY ASSEMBLY FOR A LOAD FROM AN ENERGY AND LOCOMOTIVE SOURCE EQUIPPED WITH SUCH AN ASSEMBLY
WO2005006519A1 (en) * 2003-07-08 2005-01-20 Siemens Aktiengesellschaft Circuit arrangement for emv-suppression of a direct current motor, and switching module
DE102004051129A1 (en) * 2004-10-18 2006-04-20 Siemens Ag Throttle, in particular for operation in a frequency converter system, and frequency converter system
CN100458988C (en) * 2004-12-15 2009-02-04 台达电子工业股份有限公司 Choke coil and its embedded iron core
TWI260652B (en) * 2005-11-23 2006-08-21 Delta Electronics Inc Inductor and fabricating method thereof
EP1895550A1 (en) * 2006-08-30 2008-03-05 Abb Research Ltd. A device for suppressing high frequency current or/and voltage components
US7724118B1 (en) * 2008-12-05 2010-05-25 Taimag Corporation Pulse transformer with a choke part
US8390418B2 (en) 2010-01-05 2013-03-05 Cardiac Pacemakers, Inc. Apparatus and method for reducing inductor saturation in magnetic fields

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE28423C (en) * A. KRÜZNER in Wien Device for signaling the cutting of points
US1748857A (en) * 1927-09-06 1930-02-25 Gen Electric Electric transformer
US1910253A (en) * 1928-11-30 1933-05-23 Siemens Ag Current transformer
US1935885A (en) * 1930-01-15 1933-11-21 Telefunken Gmbh Electrical apparatus
US1897604A (en) * 1930-09-23 1933-02-14 Western Electric Co Electromagnetic device
US2975386A (en) * 1955-10-11 1961-03-14 Carl E Coy Toroidal electromagnetic device
US2843683A (en) * 1956-10-26 1958-07-15 Sarkes Tarzian Television tuner input circuit
US2988715A (en) * 1958-09-02 1961-06-13 Zenith Radio Corp Sweep transformer
US3423710A (en) * 1966-09-29 1969-01-21 Atomic Energy Commission Wide band inductive coil device

Also Published As

Publication number Publication date
NL7114511A (en) 1972-05-30
FR2115417A1 (en) 1972-07-07
NO133086B (en) 1975-11-24
NO133086C (en) 1976-03-10
BE775903A (en) 1972-03-16
DE2058509B2 (en) 1974-11-14
FR2115417B1 (en) 1976-06-04
AU3617271A (en) 1973-05-31
CH536546A (en) 1973-04-30
US3781740A (en) 1973-12-25
SE373975B (en) 1975-02-17
AT314690B (en) 1974-04-25
IT941775B (en) 1973-03-10
DE2058509C3 (en) 1975-07-03
DE2058509A1 (en) 1972-05-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee