GB502296A - Improvements in or relating to high frequency inductance coils - Google Patents

Improvements in or relating to high frequency inductance coils

Info

Publication number
GB502296A
GB502296A GB12813/38A GB1281338A GB502296A GB 502296 A GB502296 A GB 502296A GB 12813/38 A GB12813/38 A GB 12813/38A GB 1281338 A GB1281338 A GB 1281338A GB 502296 A GB502296 A GB 502296A
Authority
GB
United Kingdom
Prior art keywords
core
spindle
parts
april
insulating material
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
GB12813/38A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB502296A publication Critical patent/GB502296A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0153—Electrical filters; Controlling thereof
    • H03H7/0161—Bandpass filters
    • H03H7/0169—Intermediate frequency filters
    • H03H7/0184—Intermediate frequency filters with ferromagnetic core

Abstract

502,296. Inductances. BOSCH GES., R. April 29, 1938, No. 12813. Convention date, April 29, 1937. [Class 38 (ii)] In a variable high-fre. quency inductance having a core of finely divided magnetic material, the core is made in two or more similar parts 1, 2 mounted on a screwed spindle 7 of low-loss insulating material, at least one of the parts being rotatable for screw adjustment with respect to the others. The spindle may extend through an insulat. ing partition 5 in a casing 8 and carry a second coil having a similar core construction, the two forming a band-pass filter. According to the Specification as open to inspection under Sect. 91, the core parts, instead of being mounted on a spindle, may be mounted in an internally screwed tube of low-loss insulating material. This subject-matter does not appear in the Specification as accepted.
GB12813/38A 1937-04-29 1938-04-29 Improvements in or relating to high frequency inductance coils Expired GB502296A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE502296X 1937-04-29

Publications (1)

Publication Number Publication Date
GB502296A true GB502296A (en) 1939-03-15

Family

ID=6545876

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12813/38A Expired GB502296A (en) 1937-04-29 1938-04-29 Improvements in or relating to high frequency inductance coils

Country Status (1)

Country Link
GB (1) GB502296A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2509427A (en) * 1946-08-28 1950-05-30 Mallory & Co Inc P R Transformer
US2630560A (en) * 1949-04-05 1953-03-03 Sylvania Electric Prod Radio-frequency transformer
DE948067C (en) * 1951-04-15 1956-08-30 Telefunken Gmbh Coil with high frequency core
DE967047C (en) * 1951-03-10 1957-09-26 Hans Vogt Dr Coil with a sintered adjustment core, in particular a sintered ferrite core, which is longitudinally displaceable in its bore by screwing
CN1333493C (en) * 2001-05-23 2007-08-22 尼欧斯德帕米茨瑞德两合股份有限公司 Ferrite antenna
EP2058826A1 (en) * 2005-05-25 2009-05-13 Sumida Corporation Magnetic element

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2509427A (en) * 1946-08-28 1950-05-30 Mallory & Co Inc P R Transformer
US2630560A (en) * 1949-04-05 1953-03-03 Sylvania Electric Prod Radio-frequency transformer
DE967047C (en) * 1951-03-10 1957-09-26 Hans Vogt Dr Coil with a sintered adjustment core, in particular a sintered ferrite core, which is longitudinally displaceable in its bore by screwing
DE948067C (en) * 1951-04-15 1956-08-30 Telefunken Gmbh Coil with high frequency core
CN1333493C (en) * 2001-05-23 2007-08-22 尼欧斯德帕米茨瑞德两合股份有限公司 Ferrite antenna
EP2058826A1 (en) * 2005-05-25 2009-05-13 Sumida Corporation Magnetic element
US7893807B2 (en) 2005-05-25 2011-02-22 Sumida Corporation Magnetic element

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