GB2152785B - Headphone level protection circuit - Google Patents

Headphone level protection circuit

Info

Publication number
GB2152785B
GB2152785B GB08503333A GB8503333A GB2152785B GB 2152785 B GB2152785 B GB 2152785B GB 08503333 A GB08503333 A GB 08503333A GB 8503333 A GB8503333 A GB 8503333A GB 2152785 B GB2152785 B GB 2152785B
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
GB08503333A
Other versions
GB2152785A (en
GB8503333D0 (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 GB08503333A priority Critical patent/GB2152785B/en
Publication of GB8503333D0 publication Critical patent/GB8503333D0/en
Publication of GB2152785A publication Critical patent/GB2152785A/en
Application granted granted Critical
Publication of GB2152785B publication Critical patent/GB2152785B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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)
GB08503333A 1982-05-28 1985-02-08 Headphone level protection circuit Expired GB2152785B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08503333A GB2152785B (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
GB08503333A GB2152785B (en) 1982-05-28 1985-02-08 Headphone level protection circuit

Publications (3)

Publication Number Publication Date
GB8503333D0 GB8503333D0 (en) 1985-03-13
GB2152785A GB2152785A (en) 1985-08-07
GB2152785B true GB2152785B (en) 1986-02-26

Family

ID=27261604

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08503333A Expired GB2152785B (en) 1982-05-28 1985-02-08 Headphone level protection circuit

Country Status (1)

Country Link
GB (1) GB2152785B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2599580B1 (en) * 1986-05-30 1988-09-23 Elison Sarl DEVICE FOR REDUCING BACKGROUND NOISE IN AN ELECTROACOUSTIC CHAIN.
IT1229713B (en) * 1989-05-12 1991-09-07 Sgs Thomson Microelectronics PROTECTION DEVICE FOR SEMICONDUCTOR CIRCUITS FROM TRANSISTORS ON THE POWER LINE.
US5457472A (en) * 1992-06-11 1995-10-10 Baco Industrier A/S Corner reflector for use in a radar balloon

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB487343A (en) * 1936-12-18 1938-06-20 Teodoro Adolpho Behrens Improvements relating to telephone receivers
US3624490A (en) * 1964-02-05 1971-11-30 Rca Corp Two terminal current regulator
GB1161002A (en) * 1966-02-21 1969-08-13 Royal Industries Improvements in and relating to Hearing Aids
GB1370807A (en) * 1970-11-16 1974-10-16 Pioneer Electronic Corp Signal amplifier provided with a protective circuit
DE2340123A1 (en) * 1973-08-08 1975-02-20 Schwarzer Gmbh Fritz OVERCURRENT PROTECTION CIRCUIT
SE410695B (en) * 1976-12-22 1979-10-22 Gullfiber Ab HORSE PROTECTION WITH HORTEEPHONES
GB2026274A (en) * 1978-07-20 1980-01-30 Rank Organisation Ltd Controlling current to a load

Also Published As

Publication number Publication date
GB2152785A (en) 1985-08-07
GB8503333D0 (en) 1985-03-13

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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