JPS5240102A - Preventing circuit for forgetting to switch off power switch of audio- amp - Google Patents

Preventing circuit for forgetting to switch off power switch of audio- amp

Info

Publication number
JPS5240102A
JPS5240102A JP50114794A JP11479475A JPS5240102A JP S5240102 A JPS5240102 A JP S5240102A JP 50114794 A JP50114794 A JP 50114794A JP 11479475 A JP11479475 A JP 11479475A JP S5240102 A JPS5240102 A JP S5240102A
Authority
JP
Japan
Prior art keywords
switch
audio
forgetting
power switch
preventing circuit
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
JP50114794A
Other languages
Japanese (ja)
Inventor
Matsuaki Terada
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP50114794A priority Critical patent/JPS5240102A/en
Publication of JPS5240102A publication Critical patent/JPS5240102A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:Alarm sound is output or power switch is automatically cut off by detecting no input of signal into audio amp or output signal over certain period of time.
JP50114794A 1975-09-25 1975-09-25 Preventing circuit for forgetting to switch off power switch of audio- amp Pending JPS5240102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50114794A JPS5240102A (en) 1975-09-25 1975-09-25 Preventing circuit for forgetting to switch off power switch of audio- amp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50114794A JPS5240102A (en) 1975-09-25 1975-09-25 Preventing circuit for forgetting to switch off power switch of audio- amp

Publications (1)

Publication Number Publication Date
JPS5240102A true JPS5240102A (en) 1977-03-28

Family

ID=14646842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50114794A Pending JPS5240102A (en) 1975-09-25 1975-09-25 Preventing circuit for forgetting to switch off power switch of audio- amp

Country Status (1)

Country Link
JP (1) JPS5240102A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58143439U (en) * 1982-03-19 1983-09-27 日本ビクター株式会社 Power automatic disconnection circuit
JPS5948388A (en) * 1982-08-10 1984-03-19 ポタン・ポクラン・マテリエル（ペ−・ペ−・エム） Telescopic boom

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58143439U (en) * 1982-03-19 1983-09-27 日本ビクター株式会社 Power automatic disconnection circuit
JPS5948388A (en) * 1982-08-10 1984-03-19 ポタン・ポクラン・マテリエル（ペ−・ペ−・エム） Telescopic boom

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