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GB2007883A - Improvements in and relating to converter power supplies - Google Patents

Improvements in and relating to converter power supplies

Info

Publication number
GB2007883A
GB2007883A GB7842840A GB7842840A GB2007883A GB 2007883 A GB2007883 A GB 2007883A GB 7842840 A GB7842840 A GB 7842840A GB 7842840 A GB7842840 A GB 7842840A GB 2007883 A GB2007883 A GB 2007883A
Authority
GB
United Kingdom
Prior art keywords
control unit
stand
change
relating
over
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
GB7842840A
Other versions
GB2007883B (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.)
Post Office
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Priority to GB7842840A priority Critical patent/GB2007883B/en
Publication of GB2007883A publication Critical patent/GB2007883A/en
Application granted granted Critical
Publication of GB2007883B publication Critical patent/GB2007883B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
    • H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
    • H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
    • H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/337—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
    • H02M3/3376—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration with automatic control of output voltage or current
    • H02M3/3378—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration with automatic control of output voltage or current in a push-pull configuration of the parallel type

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

In a switched mode power supply, duplicated main and stand-by control units 31,41 are provided for supplying pulse width modulated pulses for controlling the switching stage 2 of a DC-AC-DC converter, and change-over switches 21-24 are provided to bring into service the stand-by control unit if the main control unit should fail. A monitor 32 is provided to check that output supply voltages lie with predetermined ranges, and failure in this respect is taken to indicate failure of the control unit so that the change-over switches are operated. An over-riding current limiting circuit is provided to reduce the output voltage if the current exceeds a limit. <IMAGE>
GB7842840A 1977-09-23 1978-11-01 Power supplies Expired GB2007883B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7842840A GB2007883B (en) 1977-09-23 1978-11-01 Power supplies

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3975877 1977-09-23
GB7842840A GB2007883B (en) 1977-09-23 1978-11-01 Power supplies

Publications (2)

Publication Number Publication Date
GB2007883A true GB2007883A (en) 1979-05-23
GB2007883B GB2007883B (en) 1982-02-10

Family

ID=26264216

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7842840A Expired GB2007883B (en) 1977-09-23 1978-11-01 Power supplies

Country Status (1)

Country Link
GB (1) GB2007883B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135084A (en) * 1983-01-25 1984-08-22 Westinghouse Electric Corp Controlling multiple output converter
GB2248319A (en) * 1990-09-28 1992-04-01 Graeme William Younger Transportable ac power supply apparatus.
WO1996028769A1 (en) * 1995-03-11 1996-09-19 Leuze Electronic Gmbh + Co. Safety switch arrangement
GB2341444A (en) * 1998-09-08 2000-03-15 Ford Global Tech Inc Paint booth airflow control system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135084A (en) * 1983-01-25 1984-08-22 Westinghouse Electric Corp Controlling multiple output converter
GB2248319A (en) * 1990-09-28 1992-04-01 Graeme William Younger Transportable ac power supply apparatus.
WO1996028769A1 (en) * 1995-03-11 1996-09-19 Leuze Electronic Gmbh + Co. Safety switch arrangement
US5777834A (en) * 1995-03-11 1998-07-07 Leuze Electronic Gmbh+Co. Safety switch arrangement
GB2341444A (en) * 1998-09-08 2000-03-15 Ford Global Tech Inc Paint booth airflow control system
US6146264A (en) * 1998-09-08 2000-11-14 Ford Global Technologies, Inc. Paint booth airflow control system
GB2341444B (en) * 1998-09-08 2003-02-26 Ford Global Tech Inc Paint booth airflow control system

Also Published As

Publication number Publication date
GB2007883B (en) 1982-02-10

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Legal Events

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