JPS5289909A - Speaker protection circuit - Google Patents

Speaker protection circuit

Info

Publication number
JPS5289909A
JPS5289909A JP544376A JP544376A JPS5289909A JP S5289909 A JPS5289909 A JP S5289909A JP 544376 A JP544376 A JP 544376A JP 544376 A JP544376 A JP 544376A JP S5289909 A JPS5289909 A JP S5289909A
Authority
JP
Japan
Prior art keywords
protection circuit
speaker protection
speaker
withdrawing
output
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
JP544376A
Other languages
Japanese (ja)
Inventor
Takayuki Nakajima
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP544376A priority Critical patent/JPS5289909A/en
Publication of JPS5289909A publication Critical patent/JPS5289909A/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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/007—Protection circuits for transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

PURPOSE:To simplify circuit constitution by withdrawing the output of an abnormal voltage detection circuit through photo couplers.
JP544376A 1976-01-22 1976-01-22 Speaker protection circuit Pending JPS5289909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP544376A JPS5289909A (en) 1976-01-22 1976-01-22 Speaker protection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP544376A JPS5289909A (en) 1976-01-22 1976-01-22 Speaker protection circuit

Publications (1)

Publication Number Publication Date
JPS5289909A true JPS5289909A (en) 1977-07-28

Family

ID=11611333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP544376A Pending JPS5289909A (en) 1976-01-22 1976-01-22 Speaker protection circuit

Country Status (1)

Country Link
JP (1) JPS5289909A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010153948A (en) * 2008-12-24 2010-07-08 Nec Access Technica Ltd Speaker protection circuit, circuit for detecting overpower of the same, and switch circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010153948A (en) * 2008-12-24 2010-07-08 Nec Access Technica Ltd Speaker protection circuit, circuit for detecting overpower of the same, and switch circuit

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