JPH02141115U - - Google Patents

Info

Publication number
JPH02141115U
JPH02141115U JP5010989U JP5010989U JPH02141115U JP H02141115 U JPH02141115 U JP H02141115U JP 5010989 U JP5010989 U JP 5010989U JP 5010989 U JP5010989 U JP 5010989U JP H02141115 U JPH02141115 U JP H02141115U
Authority
JP
Japan
Prior art keywords
speaker
amplifier
protection circuit
output
headphone
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
JP5010989U
Other languages
English (en)
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 filed Critical
Priority to JP5010989U priority Critical patent/JPH02141115U/ja
Publication of JPH02141115U publication Critical patent/JPH02141115U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Amplifiers (AREA)

Description

【図面の簡単な説明】
第1図は本考案の一実施例を示す図で第2図及
び第3図は他の一実施例、第4図及び第5図は従
来例を示す図である。 1……入力端、2……増幅器、3,5……スイ
ツチ、4……保護回路、6……減衰器、7……ス
ピーカ、8,9……ヘツドホン端子、10……検
出回路である。

Claims (1)

    【実用新案登録請求の範囲】
  1. スピーカ保護回路を有し、スピーカとヘツドホ
    ンとを切り換える開閉器を含む増幅器の出力切換
    え回路に於いて、ヘツドホン出力端子にヘツドホ
    ンが挿入された事を検出する検出手段と、増幅器
    の異常からスピーカを保護するスピーカ保護回路
    と、検出手段の出力をスピーカ保護回路に入力し
    スピーカ保護回路で作動され増幅器の出力とスピ
    ーカを切り離すスイツチとを具備することを特徴
    とする増幅器の出力切換え回路。
JP5010989U 1989-04-27 1989-04-27 Pending JPH02141115U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5010989U JPH02141115U (ja) 1989-04-27 1989-04-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5010989U JPH02141115U (ja) 1989-04-27 1989-04-27

Publications (1)

Publication Number Publication Date
JPH02141115U true JPH02141115U (ja) 1990-11-27

Family

ID=31568377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5010989U Pending JPH02141115U (ja) 1989-04-27 1989-04-27

Country Status (1)

Country Link
JP (1) JPH02141115U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10959030B2 (en) 2018-02-19 2021-03-23 Seiko Epson Corporation Sound output circuit, projector, and control method of sound output circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10959030B2 (en) 2018-02-19 2021-03-23 Seiko Epson Corporation Sound output circuit, projector, and control method of sound output circuit

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