JPS5370424A - Speaker protecting circuit - Google Patents

Speaker protecting circuit

Info

Publication number
JPS5370424A
JPS5370424A JP14561576A JP14561576A JPS5370424A JP S5370424 A JPS5370424 A JP S5370424A JP 14561576 A JP14561576 A JP 14561576A JP 14561576 A JP14561576 A JP 14561576A JP S5370424 A JPS5370424 A JP S5370424A
Authority
JP
Japan
Prior art keywords
protecting circuit
speaker
speaker protecting
power amplifier
power
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.)
Granted
Application number
JP14561576A
Other languages
Japanese (ja)
Other versions
JPS5834077B2 (en
Inventor
Tatsuo Baba
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 JP51145615A priority Critical patent/JPS5834077B2/en
Publication of JPS5370424A publication Critical patent/JPS5370424A/en
Publication of JPS5834077B2 publication Critical patent/JPS5834077B2/en
Expired legal-status Critical Current

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
    • H04R3/007—Protection circuits for transducers

Landscapes

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

Abstract

PURPOSE:To cut off the output circuit of a power amplifier and prevent damaging of a speaker owing to excess input by detecting the output power of the power amplifier with a Hall element.
JP51145615A 1976-12-06 1976-12-06 speaker protection circuit Expired JPS5834077B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51145615A JPS5834077B2 (en) 1976-12-06 1976-12-06 speaker protection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51145615A JPS5834077B2 (en) 1976-12-06 1976-12-06 speaker protection circuit

Publications (2)

Publication Number Publication Date
JPS5370424A true JPS5370424A (en) 1978-06-22
JPS5834077B2 JPS5834077B2 (en) 1983-07-23

Family

ID=15389119

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51145615A Expired JPS5834077B2 (en) 1976-12-06 1976-12-06 speaker protection circuit

Country Status (1)

Country Link
JP (1) JPS5834077B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56108687U (en) * 1980-01-19 1981-08-22
JPS56108686U (en) * 1980-01-19 1981-08-22
JPS58141616U (en) * 1982-03-17 1983-09-24 富士通テン株式会社 Amplifier circuit with automatic gain control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56108687U (en) * 1980-01-19 1981-08-22
JPS56108686U (en) * 1980-01-19 1981-08-22
JPS58141616U (en) * 1982-03-17 1983-09-24 富士通テン株式会社 Amplifier circuit with automatic gain control
JPH046258Y2 (en) * 1982-03-17 1992-02-20

Also Published As

Publication number Publication date
JPS5834077B2 (en) 1983-07-23

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