GB1464880A - Shielded inductance coil with trimmer - Google Patents

Shielded inductance coil with trimmer

Info

Publication number
GB1464880A
GB1464880A GB3314574A GB3314574A GB1464880A GB 1464880 A GB1464880 A GB 1464880A GB 3314574 A GB3314574 A GB 3314574A GB 3314574 A GB3314574 A GB 3314574A GB 1464880 A GB1464880 A GB 1464880A
Authority
GB
United Kingdom
Prior art keywords
coil
shield
terminals
rod
extend
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
GB3314574A
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.)
Hull Corp
Original Assignee
Hull 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 Hull Corp filed Critical Hull Corp
Publication of GB1464880A publication Critical patent/GB1464880A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
    • H01F29/10—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable part of magnetic circuit
    • 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
    • H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Regulation Of General Use Transformers (AREA)

Abstract

1464880 Inductors and transformers HULL CORP 26 July 1974 [21 Jan 1974] 33145/74 Heading H1T An electrical inductor or transformer (Fig. 3, not shown), comprises multiple turns of electrically conductive material forming a coil 10 with a central opening 16, a shield 22, 24, (26), 28 of magnetic metal at least partially surrounding the coil and a rod 30 of magnetic metal mounted in engagement with one side 28 of the shield for movement through the opening in order to vary the spacing between the inner end of the rod and the confronting opposite side 22 of the shield. The coil may be a continuous spiral winding of thick films with dielectric sheets, or thin films using printed circuit techniques. For microminiaturisation, vapour deposition is used, on a dielectric substrate 18 having a central hole 20. The rod may be in the form of a screw engaging a nut 32 which is secured to the top plate 28 of the shield. The terminals 12, 14 of the inductor extend laterally from opposite sides of the coil. In the case of the transformer (Figs. 3 to 7, not shown), the terminals (36), (38) of the primary winding (34) extend from one side of the coils and the terminals (42),(44) of the secondary winding (40) which is deposited on the primary, extend from the other side of the coil.
GB3314574A 1974-01-21 1974-07-26 Shielded inductance coil with trimmer Expired GB1464880A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43490574A 1974-01-21 1974-01-21

Publications (1)

Publication Number Publication Date
GB1464880A true GB1464880A (en) 1977-02-16

Family

ID=23726181

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3314574A Expired GB1464880A (en) 1974-01-21 1974-07-26 Shielded inductance coil with trimmer

Country Status (5)

Country Link
JP (1) JPS5728931B2 (en)
CA (1) CA1009712A (en)
DE (1) DE2446583C3 (en)
FR (1) FR2258700B1 (en)
GB (1) GB1464880A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59231374A (en) * 1983-06-13 1984-12-26 サンデン株式会社 Refrigerating case
JPS6237910A (en) * 1985-08-13 1987-02-18 Agency Of Ind Science & Technol Superconducting inductor
JPH0272834U (en) * 1988-11-21 1990-06-04

Also Published As

Publication number Publication date
DE2446583A1 (en) 1975-07-24
CA1009712A (en) 1977-05-03
JPS5728931B2 (en) 1982-06-19
DE2446583B2 (en) 1977-08-25
FR2258700B1 (en) 1980-07-04
FR2258700A1 (en) 1975-08-18
JPS50102862A (en) 1975-08-14
DE2446583C3 (en) 1978-05-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940725