EP0133661A3 - Small transformer - Google Patents

Small transformer Download PDF

Info

Publication number
EP0133661A3
EP0133661A3 EP84108616A EP84108616A EP0133661A3 EP 0133661 A3 EP0133661 A3 EP 0133661A3 EP 84108616 A EP84108616 A EP 84108616A EP 84108616 A EP84108616 A EP 84108616A EP 0133661 A3 EP0133661 A3 EP 0133661A3
Authority
EP
European Patent Office
Prior art keywords
transformer
coil
coil form
affords
entertainment
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
EP84108616A
Other languages
German (de)
Other versions
EP0133661B1 (en
EP0133661A2 (en
Inventor
Ulrich Dipl.-Ing. Sobottka
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
Priority to AT84108616T priority Critical patent/ATE23234T1/en
Publication of EP0133661A2 publication Critical patent/EP0133661A2/en
Publication of EP0133661A3 publication Critical patent/EP0133661A3/en
Application granted granted Critical
Publication of EP0133661B1 publication Critical patent/EP0133661B1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • H01F27/325—Coil bobbins
    • 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
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers

Abstract

A transformer of small installed volume which affords, besides electrical separation, also an effective static protective shield between the power supply side and the user side, along with simple production and assembly. To accomplish this, a two-chamber transformer with a coil form for the primary winding and a coil form for the secondary winding, both plugged one behind the other onto the transformer core in the direction of the coil axes and a stamped metal foil frame as the shielding wall between the adjacent face flanges of the coil forms are used. The transformer is particularly well suited for application in equipment of the entertainment, communications and medical technologies.
EP84108616A 1983-08-04 1984-07-20 Small transformer Expired EP0133661B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84108616T ATE23234T1 (en) 1983-08-04 1984-07-20 SMALL TRANSFORMER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19838322540U DE8322540U1 (en) 1983-08-04 1983-08-04 SMALL TRANSFORMER
DE8322540U 1983-08-04

Publications (3)

Publication Number Publication Date
EP0133661A2 EP0133661A2 (en) 1985-03-06
EP0133661A3 true EP0133661A3 (en) 1985-04-03
EP0133661B1 EP0133661B1 (en) 1986-10-29

Family

ID=6755855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108616A Expired EP0133661B1 (en) 1983-08-04 1984-07-20 Small transformer

Country Status (4)

Country Link
US (1) US4652846A (en)
EP (1) EP0133661B1 (en)
AT (1) ATE23234T1 (en)
DE (2) DE8322540U1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6906609B1 (en) * 2000-04-07 2005-06-14 Astec International Limited Planar transformer
US6554757B1 (en) 2000-11-10 2003-04-29 Scimed Life Systems, Inc. Multi-source x-ray catheter
US6475168B1 (en) 2000-11-10 2002-11-05 Scimed Life Systems, Inc. Guide wire having x-ray transparent window for x-ray catheter
US6424696B1 (en) 2000-11-10 2002-07-23 Scimed Life Systems, Inc. X-ray catheter using a step-up transformer
US6509521B1 (en) 2000-11-10 2003-01-21 Scimed Life Systems, Inc. X-ray catheter with coaxial conductor
US6551278B1 (en) 2000-11-10 2003-04-22 Scimed Life Systems, Inc. Miniature x-ray catheter with retractable needles or suction means for positioning at a desired site
US6540655B1 (en) * 2000-11-10 2003-04-01 Scimed Life Systems, Inc. Miniature x-ray unit
US6546080B1 (en) 2000-11-10 2003-04-08 Scimed Life Systems, Inc. Heat sink for miniature x-ray unit
US6540720B1 (en) 2000-11-10 2003-04-01 Scimed Life Systems, Inc. Miniature x-ray unit
GB2377822A (en) * 2001-06-15 2003-01-22 Marconi Applied Technologies Transformer arrangement for delivering low voltage power to a high voltage device
EP1547104B1 (en) * 2002-10-01 2010-12-08 DET International Holding Limited Coil form
CN104376993A (en) * 2014-11-26 2015-02-25 广安鑫宇电子有限公司 Transformer framework

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2140497A (en) * 1937-06-07 1938-12-20 Formica Insulation Company Bobbin
DE1901827A1 (en) * 1968-01-22 1969-07-31 Westinghouse Electric Corp Inductive electrical component such as a transformer or the like.
DE2005939A1 (en) * 1969-02-12 1970-09-03
US3605055A (en) * 1970-07-02 1971-09-14 Gen Electric Two-piece winding bobbin for watt-hour meter potential coil
FR2125263A1 (en) * 1971-02-17 1972-09-29 Schutzapparate Paris & Co
US3842186A (en) * 1973-10-23 1974-10-15 Westinghouse Electric Corp Static plate for power transformers
US3851287A (en) * 1972-02-09 1974-11-26 Litton Systems Inc Low leakage current electrical isolation system
FR2389209A1 (en) * 1977-04-29 1978-11-24 Orega Electro Mecanique TRANSFORMER EQUIPPED WITH ELECTROSTATIC SCREENS BETWEEN ITS PRIMARY AND SECONDARY WINDINGS
FR2476898A1 (en) * 1980-02-22 1981-08-28 Mini Informatiq System Ste Eur HF power supply transformer winding - has stacked printed circuit turns for low skin loss and good flux linkage with electrostatic screening

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1893618A (en) * 1931-06-05 1933-01-10 Gen Motors Radio Corp Coupling device
US2714710A (en) * 1949-07-23 1955-08-02 Philco Corp Transformer
US3227973A (en) * 1962-01-31 1966-01-04 Reginald I Gray Transformer
US3277416A (en) * 1962-12-04 1966-10-04 Taylor Instrument Co Shielding arrangement for transformer
US3689862A (en) * 1971-01-20 1972-09-05 Precision Paper Tube Co Stackable coil form
US3843946A (en) * 1973-10-05 1974-10-22 Original Equipment Motors Inc Dual bobbin assembly for coils
US4000483A (en) * 1976-06-24 1976-12-28 The Singer Company Low voltage power transformer
US4250479A (en) * 1979-04-09 1981-02-10 Hewlett-Packard Company Transformer bobbin assembly

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2140497A (en) * 1937-06-07 1938-12-20 Formica Insulation Company Bobbin
DE1901827A1 (en) * 1968-01-22 1969-07-31 Westinghouse Electric Corp Inductive electrical component such as a transformer or the like.
DE2005939A1 (en) * 1969-02-12 1970-09-03
US3605055A (en) * 1970-07-02 1971-09-14 Gen Electric Two-piece winding bobbin for watt-hour meter potential coil
FR2125263A1 (en) * 1971-02-17 1972-09-29 Schutzapparate Paris & Co
US3851287A (en) * 1972-02-09 1974-11-26 Litton Systems Inc Low leakage current electrical isolation system
US3842186A (en) * 1973-10-23 1974-10-15 Westinghouse Electric Corp Static plate for power transformers
FR2389209A1 (en) * 1977-04-29 1978-11-24 Orega Electro Mecanique TRANSFORMER EQUIPPED WITH ELECTROSTATIC SCREENS BETWEEN ITS PRIMARY AND SECONDARY WINDINGS
FR2476898A1 (en) * 1980-02-22 1981-08-28 Mini Informatiq System Ste Eur HF power supply transformer winding - has stacked printed circuit turns for low skin loss and good flux linkage with electrostatic screening

Also Published As

Publication number Publication date
DE8322540U1 (en) 1984-10-11
EP0133661B1 (en) 1986-10-29
ATE23234T1 (en) 1986-11-15
DE3461128D1 (en) 1986-12-04
US4652846A (en) 1987-03-24
EP0133661A2 (en) 1985-03-06

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