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GB2251096B - Power supply circuits - Google Patents

Power supply circuits

Info

Publication number
GB2251096B
GB2251096B GB9123563A GB9123563A GB2251096B GB 2251096 B GB2251096 B GB 2251096B GB 9123563 A GB9123563 A GB 9123563A GB 9123563 A GB9123563 A GB 9123563A GB 2251096 B GB2251096 B GB 2251096B
Authority
GB
United Kingdom
Prior art keywords
power supply
supply circuits
circuits
power
supply
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 - Fee Related
Application number
GB9123563A
Other versions
GB2251096A (en
GB9123563D0 (en
Inventor
David John Epton
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.)
Measurement Technology Ltd
Original Assignee
Measurement Technology 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 Measurement Technology Ltd filed Critical Measurement Technology Ltd
Publication of GB9123563D0 publication Critical patent/GB9123563D0/en
Publication of GB2251096A publication Critical patent/GB2251096A/en
Application granted granted Critical
Publication of GB2251096B publication Critical patent/GB2251096B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
GB9123563A 1990-11-06 1991-11-06 Power supply circuits Expired - Fee Related GB2251096B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909024107A GB9024107D0 (en) 1990-11-06 1990-11-06 Power supply circuits

Publications (3)

Publication Number Publication Date
GB9123563D0 GB9123563D0 (en) 1992-01-02
GB2251096A GB2251096A (en) 1992-06-24
GB2251096B true GB2251096B (en) 1994-03-09

Family

ID=10684943

Family Applications (2)

Application Number Title Priority Date Filing Date
GB909024107A Pending GB9024107D0 (en) 1990-11-06 1990-11-06 Power supply circuits
GB9123563A Expired - Fee Related GB2251096B (en) 1990-11-06 1991-11-06 Power supply circuits

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB909024107A Pending GB9024107D0 (en) 1990-11-06 1990-11-06 Power supply circuits

Country Status (1)

Country Link
GB (2) GB9024107D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2347757B (en) * 1999-03-12 2001-02-28 Marconi Comm Ltd Optical switching arrangement
CN102789253A (en) * 2011-05-18 2012-11-21 上海华建电力设备股份有限公司 4-20mA current output circuit controlled by PWM (pulse-width modulation)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1237625A (en) * 1968-03-21 1971-06-30 Charbonnages De France Improvements in or relating to direct current supply circuits for measuring bridges
US4056688A (en) * 1976-11-11 1977-11-01 Bell Telephone Laboratories, Incorporated Telephone range extender with gain
EP0173104A2 (en) * 1984-08-02 1986-03-05 Nec Corporation Power source system comprising a plurality of power sources having negative resistance characteristics

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1237625A (en) * 1968-03-21 1971-06-30 Charbonnages De France Improvements in or relating to direct current supply circuits for measuring bridges
US4056688A (en) * 1976-11-11 1977-11-01 Bell Telephone Laboratories, Incorporated Telephone range extender with gain
EP0173104A2 (en) * 1984-08-02 1986-03-05 Nec Corporation Power source system comprising a plurality of power sources having negative resistance characteristics

Also Published As

Publication number Publication date
GB2251096A (en) 1992-06-24
GB9123563D0 (en) 1992-01-02
GB9024107D0 (en) 1990-12-19

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Legal Events

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

Effective date: 20001106