JPS5728423A - Double band tuner - Google Patents

Double band tuner

Info

Publication number
JPS5728423A
JPS5728423A JP10305480A JP10305480A JPS5728423A JP S5728423 A JPS5728423 A JP S5728423A JP 10305480 A JP10305480 A JP 10305480A JP 10305480 A JP10305480 A JP 10305480A JP S5728423 A JPS5728423 A JP S5728423A
Authority
JP
Japan
Prior art keywords
switch
tuning
coils
grounded
turned
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
JP10305480A
Other languages
Japanese (ja)
Other versions
JPS6258570B2 (en
Inventor
Kazuo Takayama
Kazutoshi Sasaki
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.)
Denso Ten Ltd
Original Assignee
Denso Ten 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 Denso Ten Ltd filed Critical Denso Ten Ltd
Priority to JP10305480A priority Critical patent/JPS5728423A/en
Publication of JPS5728423A publication Critical patent/JPS5728423A/en
Publication of JPS6258570B2 publication Critical patent/JPS6258570B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection

Landscapes

  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To simplify the band switching means, by connecting the primary sides of two tuning coils in series and making switching through the provision of a switch one end of which is grounded at a connection point. CONSTITUTION:Tuning coils 21, 22 to two frequencies are connected in series. A switch 25 is provided at the middle point R at the primary winding and grounded at on-time. The switch 25 can be a mechanical or electronic type. When the switch 25 is turned off, tuning coils 21, 22 cooperate as one tuning coil. As a result, it can be used for low band. When the switch 25 is turned on, the tuning coil 22 is in short circuit and the tuning coil 21 only functions. Thus, it can be used for high band.
JP10305480A 1980-07-29 1980-07-29 Double band tuner Granted JPS5728423A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10305480A JPS5728423A (en) 1980-07-29 1980-07-29 Double band tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10305480A JPS5728423A (en) 1980-07-29 1980-07-29 Double band tuner

Publications (2)

Publication Number Publication Date
JPS5728423A true JPS5728423A (en) 1982-02-16
JPS6258570B2 JPS6258570B2 (en) 1987-12-07

Family

ID=14343949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10305480A Granted JPS5728423A (en) 1980-07-29 1980-07-29 Double band tuner

Country Status (1)

Country Link
JP (1) JPS5728423A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54181808U (en) * 1978-06-12 1979-12-22

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54181808U (en) * 1978-06-12 1979-12-22

Also Published As

Publication number Publication date
JPS6258570B2 (en) 1987-12-07

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