KR890015563U - External / internal speaker automatic switching circuit - Google Patents

External / internal speaker automatic switching circuit

Info

Publication number
KR890015563U
KR890015563U KR2019870024493U KR870024493U KR890015563U KR 890015563 U KR890015563 U KR 890015563U KR 2019870024493 U KR2019870024493 U KR 2019870024493U KR 870024493 U KR870024493 U KR 870024493U KR 890015563 U KR890015563 U KR 890015563U
Authority
KR
South Korea
Prior art keywords
external
switching circuit
automatic switching
internal speaker
speaker automatic
Prior art date
Application number
KR2019870024493U
Other languages
Korean (ko)
Other versions
KR920004407Y1 (en
Inventor
정관옥
Original Assignee
주식회사 금성사
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 주식회사 금성사 filed Critical 주식회사 금성사
Priority to KR2019870024493U priority Critical patent/KR920004407Y1/en
Publication of KR890015563U publication Critical patent/KR890015563U/en
Application granted granted Critical
Publication of KR920004407Y1 publication Critical patent/KR920004407Y1/en

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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Amplifiers (AREA)
KR2019870024493U 1987-12-31 1987-12-31 Auto-changing circuit of external and internal speaker KR920004407Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019870024493U KR920004407Y1 (en) 1987-12-31 1987-12-31 Auto-changing circuit of external and internal speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019870024493U KR920004407Y1 (en) 1987-12-31 1987-12-31 Auto-changing circuit of external and internal speaker

Publications (2)

Publication Number Publication Date
KR890015563U true KR890015563U (en) 1989-08-12
KR920004407Y1 KR920004407Y1 (en) 1992-06-29

Family

ID=19271281

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019870024493U KR920004407Y1 (en) 1987-12-31 1987-12-31 Auto-changing circuit of external and internal speaker

Country Status (1)

Country Link
KR (1) KR920004407Y1 (en)

Also Published As

Publication number Publication date
KR920004407Y1 (en) 1992-06-29

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 19951226

Year of fee payment: 5

LAPS Lapse due to unpaid annual fee