GB1407824A - Overload protection circuit for loudspeakers - Google Patents

Overload protection circuit for loudspeakers

Info

Publication number
GB1407824A
GB1407824A GB3913672A GB3913672A GB1407824A GB 1407824 A GB1407824 A GB 1407824A GB 3913672 A GB3913672 A GB 3913672A GB 3913672 A GB3913672 A GB 3913672A GB 1407824 A GB1407824 A GB 1407824A
Authority
GB
United Kingdom
Prior art keywords
resistor
relay
parallel
series
thermistor
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
GB3913672A
Other languages
English (en)
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.)
Elektroakusztikai Gyar
Original Assignee
Elektroakusztikai Gyar
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 Elektroakusztikai Gyar filed Critical Elektroakusztikai Gyar
Publication of GB1407824A publication Critical patent/GB1407824A/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
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/085—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current making use of a thermal sensor, e.g. thermistor, heated by the excess current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/041—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature additionally responsive to excess current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H6/00—Emergency protective circuit arrangements responsive to undesired changes from normal non-electric working conditions using simulators of the apparatus being protected, e.g. using thermal images
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Amplifiers (AREA)
  • Circuit For Audible Band Transducer (AREA)
GB3913672A 1972-04-07 1972-08-22 Overload protection circuit for loudspeakers Expired GB1407824A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUEE002018 HU164736B (enrdf_load_stackoverflow) 1972-04-07 1972-04-07

Publications (1)

Publication Number Publication Date
GB1407824A true GB1407824A (en) 1975-09-24

Family

ID=10995436

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3913672A Expired GB1407824A (en) 1972-04-07 1972-08-22 Overload protection circuit for loudspeakers

Country Status (12)

Country Link
AT (1) AT320767B (enrdf_load_stackoverflow)
BG (1) BG26825A3 (enrdf_load_stackoverflow)
CA (1) CA970697A (enrdf_load_stackoverflow)
CS (1) CS171737B2 (enrdf_load_stackoverflow)
DD (1) DD98184A5 (enrdf_load_stackoverflow)
DE (1) DE2241266C3 (enrdf_load_stackoverflow)
FR (1) FR2178849B1 (enrdf_load_stackoverflow)
GB (1) GB1407824A (enrdf_load_stackoverflow)
HU (1) HU164736B (enrdf_load_stackoverflow)
PL (1) PL79698B1 (enrdf_load_stackoverflow)
SE (1) SE382545B (enrdf_load_stackoverflow)
SU (1) SU513653A3 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2624252A1 (de) * 1976-05-29 1977-12-01 Rudolf Goebel Ueberlastschutzschaltung fuer lautsprecheranordnung
WO1980002477A1 (en) * 1979-05-08 1980-11-13 Fortieth Benelux Nominees Pty Protection device or circuit for loudspeakers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3644288A1 (de) * 1986-12-23 1988-07-07 Hans Deutsch Akustikforschung Ueberlastungsschutzschaltung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2624252A1 (de) * 1976-05-29 1977-12-01 Rudolf Goebel Ueberlastschutzschaltung fuer lautsprecheranordnung
WO1980002477A1 (en) * 1979-05-08 1980-11-13 Fortieth Benelux Nominees Pty Protection device or circuit for loudspeakers

Also Published As

Publication number Publication date
FR2178849A1 (enrdf_load_stackoverflow) 1973-11-16
FR2178849B1 (enrdf_load_stackoverflow) 1980-04-18
DE2241266C3 (de) 1980-02-14
CA970697A (en) 1975-07-08
SE382545B (sv) 1976-02-02
SU513653A3 (ru) 1976-05-05
DE2241266A1 (de) 1973-10-18
DD98184A5 (enrdf_load_stackoverflow) 1973-06-05
DE2241266B2 (de) 1979-06-21
HU164736B (enrdf_load_stackoverflow) 1974-04-11
CS171737B2 (enrdf_load_stackoverflow) 1976-10-29
AT320767B (de) 1975-02-25
BG26825A3 (bg) 1979-06-12
PL79698B1 (en) 1975-06-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee