FR2399148A1 - Circuit de protection de transistors contre des surcharges - Google Patents

Circuit de protection de transistors contre des surcharges

Info

Publication number
FR2399148A1
FR2399148A1 FR7822033A FR7822033A FR2399148A1 FR 2399148 A1 FR2399148 A1 FR 2399148A1 FR 7822033 A FR7822033 A FR 7822033A FR 7822033 A FR7822033 A FR 7822033A FR 2399148 A1 FR2399148 A1 FR 2399148A1
Authority
FR
France
Prior art keywords
transistor
circuit
protection circuit
against overloads
circuit against
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
FR7822033A
Other languages
English (en)
Other versions
FR2399148B1 (fr
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.)
Honeywell GmbH
Original Assignee
Honeywell GmbH
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 Honeywell GmbH filed Critical Honeywell GmbH
Publication of FR2399148A1 publication Critical patent/FR2399148A1/fr
Application granted granted Critical
Publication of FR2399148B1 publication Critical patent/FR2399148B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Amplifiers (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Protection Of Static Devices (AREA)

Abstract

Circuit de protection de transistors contre les surcharges. Circuit comprenant une résistance à coefficient de temperature positif, ou << conducteur froid >> RPTC , reliée par une liaison bonne conductrice de la chaleur au transistor à protéger Q21 et connectée électriquement à lui, et un limiteur de tension D1 relié à la base du transistor Q21. Il est prévu, dans le circuit de commande du transistor à protéger Q21, Q22, un transistor de commande Q1, le conducteur froid RPTC est branché dans le circuit du transistor de commande Q1, et le limiteur de tension D1 est relié à l'entrée du transistor de commande Q1. Application à la protection de transistors soumis à de forts courants de charge et une faible tension de sortie.
FR7822033A 1977-07-27 1978-07-25 Circuit de protection de transistors contre des surcharges Granted FR2399148A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772733749 DE2733749B2 (de) 1977-07-27 1977-07-27 Überlastungsschutz für Transistoren

Publications (2)

Publication Number Publication Date
FR2399148A1 true FR2399148A1 (fr) 1979-02-23
FR2399148B1 FR2399148B1 (fr) 1984-06-29

Family

ID=6014889

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7822033A Granted FR2399148A1 (fr) 1977-07-27 1978-07-25 Circuit de protection de transistors contre des surcharges

Country Status (3)

Country Link
DE (1) DE2733749B2 (fr)
FR (1) FR2399148A1 (fr)
GB (1) GB1596100A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0757441A1 (fr) * 1995-07-31 1997-02-05 STMicroelectronics S.r.l. Circuit intégré pour limiter une tension

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4360852A (en) * 1981-04-01 1982-11-23 Allis-Chalmers Corporation Overcurrent and overtemperature protective circuit for power transistor system
GB9016668D0 (en) * 1990-07-30 1990-09-12 Nad Electronics Ltd Power amplifier protection circuit
RU2125342C1 (ru) * 1996-08-08 1999-01-20 Ракетно-космическая корпорация "Энергия" им.С.П.Королева Транзисторный коммутатор

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1377509A (fr) * 1963-09-25 1964-11-06 Amplificateurs à transistors de performances et de sécurité de fonctionnement élevées
US3332027A (en) * 1962-08-28 1967-07-18 Tdk Electronics Co Ltd Output transistor protecting system in a transistor amplifier circuit
FR2249463A1 (fr) * 1973-10-29 1975-05-23 Honeywell Gmbh

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332027A (en) * 1962-08-28 1967-07-18 Tdk Electronics Co Ltd Output transistor protecting system in a transistor amplifier circuit
FR1377509A (fr) * 1963-09-25 1964-11-06 Amplificateurs à transistors de performances et de sécurité de fonctionnement élevées
FR2249463A1 (fr) * 1973-10-29 1975-05-23 Honeywell Gmbh

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0757441A1 (fr) * 1995-07-31 1997-02-05 STMicroelectronics S.r.l. Circuit intégré pour limiter une tension
US5818120A (en) * 1995-07-31 1998-10-06 Sgs-Thomson Microelectronis, S.R.L. Circuit for limiting an overvoltage on a control switch connected in series with an inductive load

Also Published As

Publication number Publication date
DE2733749A1 (de) 1979-02-15
GB1596100A (en) 1981-08-19
DE2733749B2 (de) 1981-01-29
FR2399148B1 (fr) 1984-06-29

Similar Documents

Publication Publication Date Title
NO306229B1 (no) Strömbegrensende element
FR2412189A1 (fr) Dispositif combine disjoncteur-parafoudre
SE9000453L (sv) Anordning foer oeverlast- och kortslutningsskydd i elektriska anlaeggningar
FR2399148A1 (fr) Circuit de protection de transistors contre des surcharges
US5162669A (en) Semiconductor switch including a device for measuring a depletion layer temperature of the switch
GB1293961A (en) Improvements in or relating to controls for electrical heating devices
ATE38452T1 (de) Ueberbrueckungselement.
US3162790A (en) Transistor relay circuit
JPS6416957A (en) Device for detecting mixing rate of different kinds of fuel
JPS5797230A (en) Magnetic sensor switch device
JPS56153416A (en) High accuracy constant current power source
SU1026130A1 (ru) Высоковольтный стабилизатор напр жени
ATE5626T1 (de) Kurzschlusselement fuer serienschaltung.
JPS5624811A (en) Output amplifying circuit
FR2371079A1 (fr) Installation de protection contre les surintensites de courant pour un transistor de commutation
SU964609A2 (ru) Стабилизатор напр жени посто нного тока
SU1267391A1 (ru) Стабилизатор тока
SU881714A1 (ru) Стабилизированный источник посто нного напр жени
JPS6489914A (en) Overcurrent protective circuit
SU1176317A1 (ru) Стабилизатор посто нного напр жени
SU767894A1 (ru) Устройство дл защиты
JPS6482662A (en) Input protective circuit of semiconductor
SU983876A2 (ru) Устройство дл тепловой защиты электродвигател
SU1013931A1 (ru) Стабилизатор посто нного напр жени
SU1444729A1 (ru) Регул тор температуры

Legal Events

Date Code Title Description
ST Notification of lapse