FR2431216A1 - Protection circuit for DC converter - has monostable to suppress switching transistor drive and circuit to gradually restart converter after short has cleared - Google Patents

Protection circuit for DC converter - has monostable to suppress switching transistor drive and circuit to gradually restart converter after short has cleared

Info

Publication number
FR2431216A1
FR2431216A1 FR7918082A FR7918082A FR2431216A1 FR 2431216 A1 FR2431216 A1 FR 2431216A1 FR 7918082 A FR7918082 A FR 7918082A FR 7918082 A FR7918082 A FR 7918082A FR 2431216 A1 FR2431216 A1 FR 2431216A1
Authority
FR
France
Prior art keywords
converter
circuit
protection circuit
switching transistor
monostable
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
FR7918082A
Other languages
French (fr)
Other versions
FR2431216B1 (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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan Ltd
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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Publication of FR2431216A1 publication Critical patent/FR2431216A1/en
Application granted granted Critical
Publication of FR2431216B1 publication Critical patent/FR2431216B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H02H7/10—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 for converters; for rectifiers
    • H02H7/12—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 for converters; for rectifiers for static converters or rectifiers
    • 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
    • H02H3/12—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 underload or no-load
    • 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
    • H02H7/10—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 for converters; for rectifiers
    • H02H7/12—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 for converters; for rectifiers for static converters or rectifiers
    • H02H7/1213—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 for converters; for rectifiers for static converters or rectifiers for DC-DC converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The protection circuit has a monostable multivibrator that passes over into its unstable state for a given time when the electrical energy in the primary of the output transformer exceeds a given limit. In this unstable state the multivibrator suppresses the generation of drive pulses to the base of a switching transistor. A circuit gradually increases the length of the base drive pulses from zero at the end of the multivibrator's unstable state over a time interval longer than the spacing between consecutive base drive pulses. The protection circuit automatically restarts the converter once the condition causing overload, e.g. a short circuit, has disappeared.
FR7918082A 1978-07-12 1979-07-12 Protection circuit for DC converter - has monostable to suppress switching transistor drive and circuit to gradually restart converter after short has cleared Granted FR2431216A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8496578A JPS5820546B2 (en) 1978-07-12 1978-07-12 Protection circuit for switched mode power supply circuit

Publications (2)

Publication Number Publication Date
FR2431216A1 true FR2431216A1 (en) 1980-02-08
FR2431216B1 FR2431216B1 (en) 1983-01-14

Family

ID=13845326

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7918082A Granted FR2431216A1 (en) 1978-07-12 1979-07-12 Protection circuit for DC converter - has monostable to suppress switching transistor drive and circuit to gradually restart converter after short has cleared

Country Status (3)

Country Link
JP (1) JPS5820546B2 (en)
DE (1) DE2928227C2 (en)
FR (1) FR2431216A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0331592A1 (en) * 1988-03-04 1989-09-06 STMicroelectronics S.A. Switching power supply with a progressive start
EP0335194A1 (en) * 1988-03-25 1989-10-04 Siemens Aktiengesellschaft Process for limiting the output current of a supply circuit

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3019906C2 (en) * 1980-05-23 1982-05-27 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for limiting and regulating the collector current of the actuator transistor of a switched-mode power supply
US4374355A (en) * 1981-03-02 1983-02-15 General Electric Company Electrically isolated battery charger for on-board electric vehicle applications
DE3638035A1 (en) * 1986-11-07 1988-05-11 Siemens Ag Switching-off arrangement for a regulated power supply unit
CN111478299A (en) * 2020-04-13 2020-07-31 浙江华电器材检测研究所有限公司 Impulse current limiting circuit for sudden short circuit of transformer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7513319A (en) * 1974-11-14 1976-05-18 Sony Corp PROTECTION CIRCUIT FOR A POWER SUPPLY DEVICE.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL238628A (en) * 1958-04-30
US3798531A (en) * 1972-06-05 1974-03-19 Instrumentation Specialties Co Switching-mode power supply
DE2416985C3 (en) * 1974-04-08 1979-12-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen Arrangement for fast current limitation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7513319A (en) * 1974-11-14 1976-05-18 Sony Corp PROTECTION CIRCUIT FOR A POWER SUPPLY DEVICE.
GB1521328A (en) * 1974-11-14 1978-08-16 Sony Corp Dc power supply circuits

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0331592A1 (en) * 1988-03-04 1989-09-06 STMicroelectronics S.A. Switching power supply with a progressive start
FR2628269A1 (en) * 1988-03-04 1989-09-08 Sgs Thomson Microelectronics DEVICE FOR PROGRESSIVE STARTING OF A CUT-OUT POWER SUPPLY
US5084811A (en) * 1988-03-04 1992-01-28 Sgs-Thomson Microelectronics S.A. Progressive start up device for a switching power supply
EP0335194A1 (en) * 1988-03-25 1989-10-04 Siemens Aktiengesellschaft Process for limiting the output current of a supply circuit
US4908755A (en) * 1988-03-25 1990-03-13 Siemens Aktiengesellschaft Method and circuit for limiting the output current of a flyback converter

Also Published As

Publication number Publication date
FR2431216B1 (en) 1983-01-14
JPS5513636A (en) 1980-01-30
DE2928227A1 (en) 1980-01-24
JPS5820546B2 (en) 1983-04-23
DE2928227C2 (en) 1985-08-01

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Legal Events

Date Code Title Description
ST Notification of lapse