[go: up one dir, main page]

GB2152786B - Headphone level protection circuit - Google Patents

Headphone level protection circuit

Info

Publication number
GB2152786B
GB2152786B GB08503334A GB8503334A GB2152786B GB 2152786 B GB2152786 B GB 2152786B GB 08503334 A GB08503334 A GB 08503334A GB 8503334 A GB8503334 A GB 8503334A GB 2152786 B GB2152786 B GB 2152786B
Authority
GB
United Kingdom
Prior art keywords
protection circuit
level protection
headphone level
headphone
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.)
Expired
Application number
GB08503334A
Other versions
GB8503334D0 (en
GB2152786A (en
Inventor
Philip Edwin James Lacey
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.)
British Broadcasting Corp
Original Assignee
British Broadcasting Corp
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
Priority claimed from GB838306495A external-priority patent/GB8306495D0/en
Application filed by British Broadcasting Corp filed Critical British Broadcasting Corp
Priority to GB08503334A priority Critical patent/GB2152786B/en
Publication of GB8503334D0 publication Critical patent/GB8503334D0/en
Publication of GB2152786A publication Critical patent/GB2152786A/en
Application granted granted Critical
Publication of GB2152786B publication Critical patent/GB2152786B/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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
GB08503334A 1982-05-28 1985-02-08 Headphone level protection circuit Expired GB2152786B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08503334A GB2152786B (en) 1982-05-28 1985-02-08 Headphone level protection circuit

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB8215812 1982-05-28
GB838306495A GB8306495D0 (en) 1983-03-09 1983-03-09 Headphone level protection circuit
GB08503334A GB2152786B (en) 1982-05-28 1985-02-08 Headphone level protection circuit

Publications (3)

Publication Number Publication Date
GB8503334D0 GB8503334D0 (en) 1985-03-13
GB2152786A GB2152786A (en) 1985-08-07
GB2152786B true GB2152786B (en) 1986-02-26

Family

ID=27261605

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08503334A Expired GB2152786B (en) 1982-05-28 1985-02-08 Headphone level protection circuit

Country Status (1)

Country Link
GB (1) GB2152786B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5303308A (en) * 1992-07-07 1994-04-12 Gn Netcom A/S Audio frequency signal compressing system
US5448646A (en) * 1993-11-01 1995-09-05 Unex Corporation Headset interface assembly
US6771780B2 (en) * 2002-04-22 2004-08-03 Chi-Lin Hong Tri-functional dual earphone device
JP2008518498A (en) * 2004-10-21 2008-05-29 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Loudspeaker feedback
US9202453B2 (en) * 2012-12-05 2015-12-01 Bose Corporation Asymmetric temperature compensation of microphone sensitivity at an active noise reduction system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2340123A1 (en) * 1973-08-08 1975-02-20 Schwarzer Gmbh Fritz OVERCURRENT PROTECTION CIRCUIT
JPS5821907A (en) * 1981-08-01 1983-02-09 Sony Corp Protecting circuit of power amplifier

Also Published As

Publication number Publication date
GB8503334D0 (en) 1985-03-13
GB2152786A (en) 1985-08-07

Similar Documents

Publication Publication Date Title
GB8324445D0 (en) Protection circuit
GB8316270D0 (en) Circuit arrangement
GB2120903B (en) Headphone level protection circuit
DE3376374D1 (en) H-switch circuit with an overcurrent protection circuit
EP0107028A3 (en) Circuit arrangement
DE3164937D1 (en) Protection circuit
GB2133926B (en) Protection circuit
GB8328851D0 (en) Circuit arrangement
GB8304856D0 (en) Circuit arrangement
IL67353A0 (en) Protection circuit
GB2119935B (en) Short circuit current protection
GB8324567D0 (en) Protection circuit
GB8312055D0 (en) Circuit arrangement
GB8320656D0 (en) Short circuit protection
JPS576917A (en) Exclusive protecting circuit
EP0102111A3 (en) Telephone circuit
DE3470262D1 (en) Protection circuit
DE3379859D1 (en) Telephone circuit
GB8300387D0 (en) Circuit arrangement
GB2152786B (en) Headphone level protection circuit
JPS56132121A (en) Overvoltage protecting circuit
GB2152785B (en) Headphone level protection circuit
GB8313988D0 (en) Circuit arrangement
GB2088634B (en) Protection circuit for integrated circuit devices
GB8303177D0 (en) Line circuit protection

Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940526