JPS5799895A - Stereo playback device - Google Patents

Stereo playback device

Info

Publication number
JPS5799895A
JPS5799895A JP17761280A JP17761280A JPS5799895A JP S5799895 A JPS5799895 A JP S5799895A JP 17761280 A JP17761280 A JP 17761280A JP 17761280 A JP17761280 A JP 17761280A JP S5799895 A JPS5799895 A JP S5799895A
Authority
JP
Japan
Prior art keywords
speaker
jack
playback
amplifiers
switches
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
JP17761280A
Other languages
Japanese (ja)
Inventor
Kotaro Kashima
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 JP17761280A priority Critical patent/JPS5799895A/en
Publication of JPS5799895A publication Critical patent/JPS5799895A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic Arrangements (AREA)

Abstract

PURPOSE:To achieve monaural playback through the use of an internal speaker and stereo playback through the use of the internal and an external speaker, by constituting a playback consisting of two systems of amplifiers and one system of speaker and switching the circuit connection in interlocking with the plug insertion/removal to/from a jack. CONSTITUTION:A playback device is provided with two systems of amplifiers 15 and 16, one system of an incorporated speaker 1, monaural jack 2 and switches 3-5 interlocked with each other. The moving contact of the switches 3-5 is connected to b sides when no jack is inserted to the jack 2, a monaural signal from an input terminal 7 is applied to a phase inversion circuit consisting of transistor (TR)9 and applied to amplifiers 15 and 16 via capacitors 13 and 1, the output of which drives the speaker 1. When a plug is inserted to the jack 2, the switches 3-5 are turned on to (a) sides, left and right stereo signals are inputted input terminals 6 and 7 respectively and stereo playback is performed with a speaker provided to outside the jack 2 and the speaker 1.
JP17761280A 1980-12-15 1980-12-15 Stereo playback device Pending JPS5799895A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17761280A JPS5799895A (en) 1980-12-15 1980-12-15 Stereo playback device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17761280A JPS5799895A (en) 1980-12-15 1980-12-15 Stereo playback device

Publications (1)

Publication Number Publication Date
JPS5799895A true JPS5799895A (en) 1982-06-21

Family

ID=16034044

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17761280A Pending JPS5799895A (en) 1980-12-15 1980-12-15 Stereo playback device

Country Status (1)

Country Link
JP (1) JPS5799895A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5736090B2 (en) * 1973-04-11 1982-08-02

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5736090B2 (en) * 1973-04-11 1982-08-02

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