GB201209087D0 - Transformer beads - Google Patents

Transformer beads

Info

Publication number
GB201209087D0
GB201209087D0 GBGB1209087.4A GB201209087A GB201209087D0 GB 201209087 D0 GB201209087 D0 GB 201209087D0 GB 201209087 A GB201209087 A GB 201209087A GB 201209087 D0 GB201209087 D0 GB 201209087D0
Authority
GB
United Kingdom
Prior art keywords
groove
transformer
bead
channels
grooves
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.)
Granted
Application number
GBGB1209087.4A
Other versions
GB2502315A (en
GB2502315B (en
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.)
Technetix BV
Original Assignee
Technetix BV
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 Technetix BV filed Critical Technetix BV
Priority to GB1209087.4A priority Critical patent/GB2502315B/en
Publication of GB201209087D0 publication Critical patent/GB201209087D0/en
Priority to NL2010851A priority patent/NL2010851C2/en
Publication of GB2502315A publication Critical patent/GB2502315A/en
Application granted granted Critical
Publication of GB2502315B publication Critical patent/GB2502315B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H01F17/06—Fixed inductances of the signal type  with magnetic core with core substantially closed in itself, e.g. toroid
    • H01F17/08—Loading coils for telecommunication circuits
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/08—Cores, Yokes, or armatures made from powder

Abstract

A transformer bead or core 10' comprises a body formed with at least first and second channels 16, 18, which may be cylindrical, for receiving transformer windings wherein at least one groove or notch 30 is formed in the body extending between and parallel to the channels. The groove acts to provide a flux gap such that when the transformer bead 10' is used to carry two separate transformer windings 20, 22, the groove 30 interrupts the flux path occurring in the magnetic bead 10' substantially reducing cross-coupling. The groove 30 may have an outwardly curved, tapered cross-section with a flat base. There may be upper and lower grooves 30, directly opposing each other, and the depth of the groove or grooves may range from 20 to 80% of the body 10' height. The bead 10' may be incorporated into an electronic device or circuit (40, Figure 4). The transformer may be used in a cable television splitter circuit.
GB1209087.4A 2012-05-24 2012-05-24 Transformer beads Active GB2502315B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1209087.4A GB2502315B (en) 2012-05-24 2012-05-24 Transformer beads
NL2010851A NL2010851C2 (en) 2012-05-24 2013-05-24 Transformer beads.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1209087.4A GB2502315B (en) 2012-05-24 2012-05-24 Transformer beads

Publications (3)

Publication Number Publication Date
GB201209087D0 true GB201209087D0 (en) 2012-07-04
GB2502315A GB2502315A (en) 2013-11-27
GB2502315B GB2502315B (en) 2015-11-18

Family

ID=46546545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1209087.4A Active GB2502315B (en) 2012-05-24 2012-05-24 Transformer beads

Country Status (2)

Country Link
GB (1) GB2502315B (en)
NL (1) NL2010851C2 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6114924A (en) * 1997-12-11 2000-09-05 Antec Corporation Dual core RF directional coupler
JPH11354348A (en) * 1998-06-04 1999-12-24 Furukawa Electric Co Ltd:The Isolation transformer
US20010025410A1 (en) * 2000-01-20 2001-10-04 Steward, Inc. Methods for making gapped closed-shape inductors
US7612641B2 (en) * 2004-09-21 2009-11-03 Pulse Engineering, Inc. Simplified surface-mount devices and methods

Also Published As

Publication number Publication date
GB2502315A (en) 2013-11-27
GB2502315B (en) 2015-11-18
NL2010851C2 (en) 2013-11-26

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