GB2152785B - Headphone level protection circuit - Google Patents

Headphone level protection circuit

Info

Publication number
GB2152785B
GB2152785B GB8503333A GB8503333A GB2152785B GB 2152785 B GB2152785 B GB 2152785B GB 8503333 A GB8503333 A GB 8503333A GB 8503333 A GB8503333 A GB 8503333A GB 2152785 B GB2152785 B GB 2152785B
Authority
GB
Grant status
Grant
Patent type
Prior art keywords
headphone
level
protection
circuit
headphone level
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
GB8503333A
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
Grant date

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/041Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • H04R3/007Protection circuits for transducers
GB8503333A 1982-05-28 1985-02-08 Headphone level protection circuit Expired GB2152785B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8215812 1982-05-28
GB8306495A GB8306495D0 (en) 1983-03-09 1983-03-09 Headphone level protection circuit
GB8503333A GB2152785B (en) 1982-05-28 1985-02-08 Headphone level protection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8503333A 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 true 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
GB8503333A 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 A reduction of the background noise in an electroacoustic chain.
DE69013971T2 (en) * 1989-05-12 1995-06-22 Sgs Thomson Microelectronics Circuits for protecting semiconductor circuits against transients on the supply 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 Over-current protection circuit
GB1593997A (en) * 1976-12-22 1981-07-22 Gullfiber Ab Ear-pads allowing communication with the wearer
GB2026274A (en) * 1978-07-20 1980-01-30 Rank Organisation Ltd Controlling current to a load

Also Published As

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

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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