GB1320084A - Transformer - Google Patents

Transformer

Info

Publication number
GB1320084A
GB1320084A GB3928471A GB3928471A GB1320084A GB 1320084 A GB1320084 A GB 1320084A GB 3928471 A GB3928471 A GB 3928471A GB 3928471 A GB3928471 A GB 3928471A GB 1320084 A GB1320084 A GB 1320084A
Authority
GB
United Kingdom
Prior art keywords
bobbin
windings
hub
flanges
slot
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
GB3928471A
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of GB1320084A publication Critical patent/GB1320084A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/01—Circuitry for demodulating colour component signals modulated spatially by colour striped filters by phase separation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

1320084 Transformers SONY CORP 20 Aug 1971 [22 Aug 1970] 39284/71 Heading HIT [Also in Division H4] A transformer having good shielding characteristics and low capacity coupling between the windings suitable for use in a colour television camera comprises a bobbin 101 of non-magnetic conductive metal such as copper, aluminium, gold, silver, &c., having a hollow hub, three flanges 103a, 103b, 103c and a slot 102. A primary winding is wound on the hub between flanges 103a, 103b and has lead wires 104b, 104c shielded by a braided copper wire sheath 104a connected to the bobbin; secondary windings 105, 106 wound on the hub between flanges 103b, 103c, having terminal leads 105a, 106a respectively twisted together outside the transformer, and their other ends twisted together and connected to provide a centre tap 107. A non-magnetic conductive metal shield case 108 surrounds the bobbin and windings, and is provided with a slot (109) (Fig. 8A, not shown) aligned with slot 102 in the bobbin. A ferrite core consists of two pot-core sections 111, 112 which combine to provide an arm portion which extends into the hollow hub of the bobbin and an outer cylindrical part which surrounds the shield 108, the windings and the bobbin.
GB3928471A 1970-08-22 1971-08-20 Transformer Expired GB1320084A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1970083785U JPS5025294Y1 (en) 1970-08-22 1970-08-22

Publications (1)

Publication Number Publication Date
GB1320084A true GB1320084A (en) 1973-06-13

Family

ID=13812274

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3928471A Expired GB1320084A (en) 1970-08-22 1971-08-20 Transformer

Country Status (7)

Country Link
US (1) US3717833A (en)
JP (1) JPS5025294Y1 (en)
CA (1) CA948729A (en)
DE (1) DE2141851C2 (en)
FR (1) FR2103456B1 (en)
GB (1) GB1320084A (en)
NL (1) NL7111543A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4514693A (en) * 1977-12-27 1985-04-30 Texaco Inc. Dielectric well logging system with electrostatically shielded coils
US5163181A (en) * 1988-10-21 1992-11-10 Harris Corporation Multiple rf signal amplification method and apparatus
US5359313A (en) * 1991-12-10 1994-10-25 Toko, Inc. Step-up transformer
US5504424A (en) * 1993-05-28 1996-04-02 Durakool, Inc. Variable reluctance sensor utilizing a magnetic bobbin
FR2787625B1 (en) * 1998-12-18 2001-02-23 Convergie ELECTROMAGNETIC PROTECTION ELEMENT FOR TRANSFORMERS AND METHOD OF MANUFACTURING THIS ELEMENT
US6940468B2 (en) * 2001-02-15 2005-09-06 Integral Technologies, Inc. Transformers or inductors (“transductors”) and antennas manufactured from conductive loaded resin-based materials
WO2007136307A1 (en) * 2006-05-19 2007-11-29 Abb Technology Ltd. Reactor shield
US8400154B1 (en) * 2008-02-08 2013-03-19 Seektech, Inc. Locator antenna with conductive bobbin
US10200774B1 (en) * 2016-11-30 2019-02-05 Google Llc Sensor cord construction to prevent capacitance variation

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR491607A (en) * 1917-01-09 1919-06-10 Societe Eureka Fire Hose Manufacturing Company Pipe connection
US1624560A (en) * 1924-11-14 1927-04-12 Western Electric Co Inductance coil and method of manufacturing the same
US2085434A (en) * 1932-06-15 1937-06-29 Rca Corp Antenna system
US2183355A (en) * 1938-08-22 1939-12-12 Jefferson Electric Co Transformer construction
DE733913C (en) * 1938-10-09 1943-04-05 Telefunken Gmbh High frequency transmitter
US2533920A (en) * 1942-06-06 1950-12-12 Samuel B Pack Electric distribution system
US2896096A (en) * 1953-03-17 1959-07-21 Schwarzer Fritz Power supply
DE1109268B (en) * 1955-10-10 1961-06-22 United Transformer Corp Small and miniature coils on a cylindrical body made of magnetizable sheet metal
US3393388A (en) * 1967-03-14 1968-07-16 George V. Young Windings having continuous shields therearound
US3517361A (en) * 1968-06-19 1970-06-23 Stevens Arnold Inc Shielded transformer

Also Published As

Publication number Publication date
FR2103456A1 (en) 1972-04-14
DE2141851A1 (en) 1972-02-24
FR2103456B1 (en) 1975-04-18
JPS5025294Y1 (en) 1975-07-30
CA948729A (en) 1974-06-04
US3717833A (en) 1973-02-20
NL7111543A (en) 1972-02-24
DE2141851C2 (en) 1983-10-27

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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