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GB2297874A - Method and switching arrangement for starting a power supply - Google Patents

Method and switching arrangement for starting a power supply

Info

Publication number
GB2297874A
GB2297874A GB9606136A GB9606136A GB2297874A GB 2297874 A GB2297874 A GB 2297874A GB 9606136 A GB9606136 A GB 9606136A GB 9606136 A GB9606136 A GB 9606136A GB 2297874 A GB2297874 A GB 2297874A
Authority
GB
United Kingdom
Prior art keywords
cin
input
load
uac
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.)
Granted
Application number
GB9606136A
Other versions
GB9606136D0 (en
GB2297874B (en
Inventor
Matti Havukainen
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.)
Nokia Oyj
Original Assignee
Nokia Telecommunications Oy
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 Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Publication of GB9606136D0 publication Critical patent/GB9606136D0/en
Publication of GB2297874A publication Critical patent/GB2297874A/en
Application granted granted Critical
Publication of GB2297874B publication Critical patent/GB2297874B/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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
    • G05F1/56—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
    • G05F1/565—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • G05F1/569—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/001—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection limiting speed of change of electric quantities, e.g. soft switching on or off

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

The invention relates to a method and a circuit arrangement for switching on an electric load, in particular a power supply. The load is fed from a voltage source supplying an input voltage (Uac), and an input capacitor (Cin) is connected to the input terminals of the load (107). According to the method, (a) when the input voltage (Uac) is switched on, the operation is in the inrush mode, where the input capacitor (Cin) begins to be charged by means of a charging current (Ic) supplied by a constant-current generator circuit (108), when the input voltage (Uac) has exceeded its minimum value, and (b) after the input capacitor (Cin) is charged, a transition to the continuous mode following the start-up occurs. To switch on the load safely by means of equipment as simple as possible, information about the charging of the input capacitor (Cin) is derived from a change caused in the constant-current generator circuit by a drop in the charging current. <IMAGE>
GB9606136A 1993-09-22 1994-09-21 Method and circuit arrangement for switching on an electric load Expired - Fee Related GB2297874B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI934158A FI94195C (en) 1993-09-22 1993-09-22 Procedure and switching arrangement for starting a power source
PCT/FI1994/000422 WO1995008862A1 (en) 1993-09-22 1994-09-21 Method and switching arrangement for starting a power supply

Publications (3)

Publication Number Publication Date
GB9606136D0 GB9606136D0 (en) 1996-05-22
GB2297874A true GB2297874A (en) 1996-08-14
GB2297874B GB2297874B (en) 1998-04-15

Family

ID=8538639

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9606136A Expired - Fee Related GB2297874B (en) 1993-09-22 1994-09-21 Method and circuit arrangement for switching on an electric load

Country Status (5)

Country Link
AU (1) AU7699394A (en)
DE (1) DE4497069T1 (en)
FI (1) FI94195C (en)
GB (1) GB2297874B (en)
WO (1) WO1995008862A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111200355A (en) * 2018-11-19 2020-05-26 上海微电子装备（集团）股份有限公司 Power-on buffer circuit

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5721474A (en) * 1995-08-11 1998-02-24 Samsung Electronics Co., Ltd. Method and apparatus for preventing excessive current flow in a motor
DE29519343U1 (en) * 1995-12-05 1997-01-16 Siemens AG, 80333 München Power supply with low loss inrush current limitation
US6094036A (en) * 1995-12-05 2000-07-25 Siemens Aktiengesellschaft Electrical power supply with low-loss inrush current limiter and step-up converter circuit
EP1162723A1 (en) 2000-06-08 2001-12-12 STMicroelectronics S.r.l. Current generator with thermal protection
CN103738139B (en) * 2013-12-21 2016-03-16 博耐尔汽车电气系统有限公司 A kind of automobile air-container air quantity control system of overvoltage protection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4678984A (en) * 1986-04-21 1987-07-07 Sperry Corporation Digital power converter input current control circuit
US5124630A (en) * 1990-07-30 1992-06-23 Nec Corporation Switching power supply apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4678984A (en) * 1986-04-21 1987-07-07 Sperry Corporation Digital power converter input current control circuit
US5124630A (en) * 1990-07-30 1992-06-23 Nec Corporation Switching power supply apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111200355A (en) * 2018-11-19 2020-05-26 上海微电子装备（集团）股份有限公司 Power-on buffer circuit
CN111200355B (en) * 2018-11-19 2021-04-09 上海微电子装备（集团）股份有限公司 Power-on buffer circuit

Also Published As

Publication number Publication date
GB9606136D0 (en) 1996-05-22
DE4497069T1 (en) 1996-10-31
FI934158A0 (en) 1993-09-22
AU7699394A (en) 1995-04-10
FI94195B (en) 1995-04-13
GB2297874B (en) 1998-04-15
FI94195C (en) 1995-07-25
WO1995008862A1 (en) 1995-03-30

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110921