JPS57138213A - Channel selecting circuit - Google Patents

Channel selecting circuit

Info

Publication number
JPS57138213A
JPS57138213A JP2298681A JP2298681A JPS57138213A JP S57138213 A JPS57138213 A JP S57138213A JP 2298681 A JP2298681 A JP 2298681A JP 2298681 A JP2298681 A JP 2298681A JP S57138213 A JPS57138213 A JP S57138213A
Authority
JP
Japan
Prior art keywords
channel
switch
once
selecting circuit
turns
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
JP2298681A
Other languages
Japanese (ja)
Inventor
Nobuhiro Fujimoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2298681A priority Critical patent/JPS57138213A/en
Publication of JPS57138213A publication Critical patent/JPS57138213A/en
Pending 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
    • H03J5/02—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

PURPOSE:To realize easy switch operation by performing reception over a preferentially set channel once a functon selection switch or a power switch is turned on. CONSTITUTION:Once the function selection switch 21 or power switch 23 of a radio receiver, etc., is turned on, a switching transistor (TR) 24 turns on for a certain time. This switching (TR) 24 is connected in parallel to one of switches S1-S6 for selecting a received channel. Once the TR24 turns on, a specific channel is selected through a switch group 10, so the channel is received preferentially.
JP2298681A 1981-02-20 1981-02-20 Channel selecting circuit Pending JPS57138213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2298681A JPS57138213A (en) 1981-02-20 1981-02-20 Channel selecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2298681A JPS57138213A (en) 1981-02-20 1981-02-20 Channel selecting circuit

Publications (1)

Publication Number Publication Date
JPS57138213A true JPS57138213A (en) 1982-08-26

Family

ID=12097858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2298681A Pending JPS57138213A (en) 1981-02-20 1981-02-20 Channel selecting circuit

Country Status (1)

Country Link
JP (1) JPS57138213A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58133023A (en) * 1982-02-03 1983-08-08 Fujitsu Ten Ltd Radio receiver
JPS62171227U (en) * 1986-04-18 1987-10-30

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58133023A (en) * 1982-02-03 1983-08-08 Fujitsu Ten Ltd Radio receiver
JPH0313765B2 (en) * 1982-02-03 1991-02-25 Fujitsu Ten Ltd
JPS62171227U (en) * 1986-04-18 1987-10-30

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