GB911558A - High frequency coils for use with thermionic and semi-conductor devices - Google Patents

High frequency coils for use with thermionic and semi-conductor devices

Info

Publication number
GB911558A
GB911558A GB3094260A GB3094260A GB911558A GB 911558 A GB911558 A GB 911558A GB 3094260 A GB3094260 A GB 3094260A GB 3094260 A GB3094260 A GB 3094260A GB 911558 A GB911558 A GB 911558A
Authority
GB
United Kingdom
Prior art keywords
ferrite
insulating
winding
plug
cup
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
GB3094260A
Inventor
Ernest George Osborne
Arthur David Pressly
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.)
WEYMOUTH RADIO Manufacturing Co Ltd
Original Assignee
WEYMOUTH RADIO Manufacturing Co Ltd
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 WEYMOUTH RADIO Manufacturing Co Ltd filed Critical WEYMOUTH RADIO Manufacturing Co Ltd
Priority to GB3094260A priority Critical patent/GB911558A/en
Publication of GB911558A publication Critical patent/GB911558A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01F17/043—Fixed inductances of the signal type  with magnetic core with two, usually identical or nearly identical parts enclosing completely the coil (pot cores)

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

911,558. Inductors. WEYMOUTH RADIO MANUFACTURING CO. Ltd. Aug. 22, 1961 [Sept. 8, 1960], No. 30942/60. Class 38 (2). An adjustable high-frequency coil comprises a ferrite core 6 attached to an insulating base 5 and carrying. a winding 8 surrounded by a cylindrical ferrite cup 9, the whole being enclosed by a detachable aluminium cover 10 into which is screwed an insulating axially adjustable plug 12 having a flat ferromagnetic disc 14 e.g. of Ferroxdur attached thereto. The ends of the winding 8, which rests on an annular ferrite disc 7, pass through notches (not shown) in the cup 9 to metal pins 16, one or both of which are connected to a capacitor 15. Adjustment of plug 12 varies the gap between members 14 and 9 thus varying the inductance of the coil. In a modification, Fig. 2 (not shown), a ferrite cylinder surrounding the winding is mounted on a boss integral with the base on which is also mounted an insulating cylinder in which screws an insulating plug carrying a short ferrite rod.
GB3094260A 1960-09-08 1960-09-08 High frequency coils for use with thermionic and semi-conductor devices Expired GB911558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3094260A GB911558A (en) 1960-09-08 1960-09-08 High frequency coils for use with thermionic and semi-conductor devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3094260A GB911558A (en) 1960-09-08 1960-09-08 High frequency coils for use with thermionic and semi-conductor devices

Publications (1)

Publication Number Publication Date
GB911558A true GB911558A (en) 1962-11-28

Family

ID=10315525

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3094260A Expired GB911558A (en) 1960-09-08 1960-09-08 High frequency coils for use with thermionic and semi-conductor devices

Country Status (1)

Country Link
GB (1) GB911558A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800258A (en) * 1973-01-22 1974-03-26 Gen Motors Corp Pressure-inductance transducer
US4517509A (en) * 1981-11-17 1985-05-14 U.S. Philips Corporation Inductive device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800258A (en) * 1973-01-22 1974-03-26 Gen Motors Corp Pressure-inductance transducer
US4517509A (en) * 1981-11-17 1985-05-14 U.S. Philips Corporation Inductive device

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