JPS5358221A - Speaker protector - Google Patents

Speaker protector

Info

Publication number
JPS5358221A
JPS5358221A JP13319376A JP13319376A JPS5358221A JP S5358221 A JPS5358221 A JP S5358221A JP 13319376 A JP13319376 A JP 13319376A JP 13319376 A JP13319376 A JP 13319376A JP S5358221 A JPS5358221 A JP S5358221A
Authority
JP
Japan
Prior art keywords
speaker
heating element
speaker protector
heating
current
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
JP13319376A
Other languages
Japanese (ja)
Inventor
Isao Kito
Toshitaka Sugimoto
Yoshito Omura
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 JP13319376A priority Critical patent/JPS5358221A/en
Publication of JPS5358221A publication Critical patent/JPS5358221A/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)
  • Circuit For Audible Band Transducer (AREA)

Abstract

PURPOSE:To prevent the burn of a speaker despite application of any signal to the speaker by making the thermal temperature time constants of a thermosensitive switch and a heating element for heating this the same value and fowing he current resembling to coil current to this heating element.
JP13319376A 1976-11-08 1976-11-08 Speaker protector Pending JPS5358221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13319376A JPS5358221A (en) 1976-11-08 1976-11-08 Speaker protector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13319376A JPS5358221A (en) 1976-11-08 1976-11-08 Speaker protector

Publications (1)

Publication Number Publication Date
JPS5358221A true JPS5358221A (en) 1978-05-26

Family

ID=15098873

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13319376A Pending JPS5358221A (en) 1976-11-08 1976-11-08 Speaker protector

Country Status (1)

Country Link
JP (1) JPS5358221A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5430839U (en) * 1977-08-02 1979-02-28
JPS5925889U (en) * 1982-08-09 1984-02-17 東北金属工業株式会社 speaker circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5430839U (en) * 1977-08-02 1979-02-28
JPS5925889U (en) * 1982-08-09 1984-02-17 東北金属工業株式会社 speaker circuit

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