JPS55136715A - Frequency tuner - Google Patents

Frequency tuner

Info

Publication number
JPS55136715A
JPS55136715A JP4475079A JP4475079A JPS55136715A JP S55136715 A JPS55136715 A JP S55136715A JP 4475079 A JP4475079 A JP 4475079A JP 4475079 A JP4475079 A JP 4475079A JP S55136715 A JPS55136715 A JP S55136715A
Authority
JP
Japan
Prior art keywords
support rod
resin
ferrite
bobbin
cylindrical
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.)
Pending
Application number
JP4475079A
Other languages
Japanese (ja)
Inventor
Toshiyuki Tamakai
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.)
Hitachi Metals Ltd
Original Assignee
Nippon Ferrite 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 Nippon Ferrite Ltd filed Critical Nippon Ferrite Ltd
Priority to JP4475079A priority Critical patent/JPS55136715A/en
Publication of JPS55136715A publication Critical patent/JPS55136715A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/005—Inductances without magnetic core

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)

Abstract

PURPOSE:To reduce the hauling and to prevent the unit damage and frequency change against temperature, by using resin as the support rod of frequency turner. CONSTITUTION:The cylindrical ferrite core 1 is installed at the external circumference of the cylindrical bobbin 3 winding the coil 2. The support rod 5 is latched inside the bobbin 3 with screws and it is installed removably to the ferrite 4 in axial direction. The support rod 5 has elasticity and is formed with the resin smaller in thermal expansion coefficient, such as Derlin resin. The tuning adjustment is possible through the support rod 5 coupled with the ferrite 4.
JP4475079A 1979-04-11 1979-04-11 Frequency tuner Pending JPS55136715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4475079A JPS55136715A (en) 1979-04-11 1979-04-11 Frequency tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4475079A JPS55136715A (en) 1979-04-11 1979-04-11 Frequency tuner

Publications (1)

Publication Number Publication Date
JPS55136715A true JPS55136715A (en) 1980-10-24

Family

ID=12700116

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4475079A Pending JPS55136715A (en) 1979-04-11 1979-04-11 Frequency tuner

Country Status (1)

Country Link
JP (1) JPS55136715A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS619934U (en) * 1984-06-25 1986-01-21 カシオ計算機株式会社 Small electronic device with antenna

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS619934U (en) * 1984-06-25 1986-01-21 カシオ計算機株式会社 Small electronic device with antenna
JPH0342748Y2 (en) * 1984-06-25 1991-09-06

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