WO2008032457A1 - Circuit d'alimentation électrique et procédé d'alimentation électrique - Google Patents

Circuit d'alimentation électrique et procédé d'alimentation électrique Download PDF

Info

Publication number
WO2008032457A1
WO2008032457A1 PCT/JP2007/054401 JP2007054401W WO2008032457A1 WO 2008032457 A1 WO2008032457 A1 WO 2008032457A1 JP 2007054401 W JP2007054401 W JP 2007054401W WO 2008032457 A1 WO2008032457 A1 WO 2008032457A1
Authority
WO
WIPO (PCT)
Prior art keywords
load
power supply
voltage
output
unit
Prior art date
Application number
PCT/JP2007/054401
Other languages
English (en)
Japanese (ja)
Inventor
Akinori Sano
Original Assignee
D & M Holdings Inc.
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 D & M Holdings Inc. filed Critical D & M Holdings Inc.
Publication of WO2008032457A1 publication Critical patent/WO2008032457A1/fr

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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H02M7/08—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode arranged for operation in parallel
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0032—Control circuits allowing low power mode operation, e.g. in standby mode
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Definitions

  • the present invention relates to a power circuit technology for electrical and electronic equipment that can reduce power consumption during standby.
  • Many electrical and electronic devices such as video equipment and audio equipment are capable of remote operation by a remote controller and automatic time control by a timer.
  • a remote controller When the power is turned on / off by remote operation or automatic time control, standby power supply for remote operation control or automatic time control is required even when the power is off. Examples of the places where such standby power supply is required include a remote controller light receiving unit and a control microcomputer.
  • the main power supply circuit has a main transformer
  • the standby power supply circuit has a standby transformer having a lower capacity than the main transformer
  • switching between the standby power supply circuit and the main power supply circuit is performed by a relay circuit. Since a low-capacity standby transformer is used during standby, it is possible to save power during standby.
  • a power circuit is a power supply circuit that supplies power to a load during standby, and rectifies an AC output having a first voltage value into a DC to load And a second rectifying unit that rectifies an AC output having a second voltage value higher than the first voltage value into a direct current and supplies it to the load.
  • a power storage unit disposed between the first rectification unit and the second rectification unit and the load, and a gap between the second rectification unit and the load according to a voltage formed by the power storage unit.
  • a switching unit that switches connection between the first rectification unit and the load of the second rectification unit by connecting or disconnecting.
  • the switching unit disconnects the second rectification unit from the load when the voltage formed by the power storage unit exceeds a certain voltage, and the voltage generated by the power storage unit When the voltage falls below a certain voltage, the second rectifying unit and the load may be connected.
  • the power supply circuit having the above configuration may include a transformer having an intermediate tap.
  • the first rectifier receives an AC output when the transformer is connected to the intermediate tap, and the second rectifier is You may receive the alternating current output at the time of the both ends tap connection of the said transformer.
  • the first rectification unit and the second rectification unit may receive AC output from transformers having different capacities.
  • the switching unit may include a backflow preventing rectifier element provided between the first rectifier unit, the second rectifier unit, and the power storage unit.
  • a power supply method for supplying power to a load during standby, wherein an AC output having a first voltage value is converted into a first rectifier.
  • the second rectifying unit rectifies the AC power having the second voltage value higher than the first voltage value by rectifying the direct current into the direct current by the second part and supplying it to the load.
  • This is a power supply method that switches whether to supply power according to the voltage formed by the power storage unit disposed between the first rectification unit and the second rectification unit and the load provided in parallel.
  • the second rectification unit and the load may be separated from each other, and the second rectification unit and the load may be connected when the voltage formed by the power storage unit falls below a certain voltage.
  • the AC output having the first voltage value is an AC output at the time of intermediate tap connection of the transformer, and the AC output having the second voltage value is connected at both ends of the transformer. It may be an AC output at the time.
  • the AC output having the first voltage value and the AC output having the second voltage value may be AC outputs from transformers having different capacities.
  • the AC output having the first voltage value is rectified to DC and supplied to the load, or the AC output having the second voltage value is rectified to DC and supplied to the load.
  • the backflow of power may be prevented by a backflow preventing rectifier.
  • FIG. 1 is a block diagram showing a configuration of a power supply circuit according to an embodiment of the present invention.
  • FIG. 2 is a block diagram showing a configuration of a standby power supply circuit according to the embodiment of the present invention.
  • Fig. 3 is a diagram showing the time course of the secondary voltage during standby.
  • FIG. 4 is a diagram showing a time course of secondary power during standby.
  • FIG. 5 is a block diagram showing another configuration example of the standby power supply circuit according to the embodiment of the present invention.
  • FIG. 6 is a block diagram showing another configuration example of the standby power supply circuit according to the embodiment of the present invention.
  • the power supply circuit according to this embodiment is provided in an electrical / electronic device such as a video device or an audio device.
  • an electrical / electronic device such as a video device or an audio device.
  • the example shown below is an example and this invention is not limited to this.
  • a device provided with the power supply circuit according to this embodiment operates in either a normal operation state or a standby state while power is supplied from an external power supply.
  • FIG. 1 shows the configuration of the power supply circuit according to the present embodiment.
  • a power supply circuit 100 shown in FIG. 1 includes a main power supply circuit 110, a standby power supply circuit 120, and a relay unit 130.
  • the main power circuit 110 is connected to a power source 111 such as a commercial power source.
  • the main power circuit 110 supplies power necessary for the operation of the main circuit 112 when the power source 111 of the device is turned on (that is, when power is supplied from the outside of the device) and during normal operation of the device. Supply.
  • the main circuit 112 constitutes a circuit for controlling the normal operation of the electric / electronic device.
  • the standby power supply circuit 120 is connected to a power supply 111 such as a commercial power supply, and supplies necessary power to the load 121 in a state where the power supply 111 of the device is turned on.
  • the load 121 is composed of a power source for a microcomputer that operates when an electric / electronic device is on standby, a timer, a light receiving element for remote operation, a light emitting element, or a combination thereof.
  • the relay unit 130 includes a relay coil power supply 132 that drives opening and closing of the contact 131 of the primary switching relay, and switches the power supply destination from the power supply 111 between the main power supply circuit 110 and the standby power supply circuit 120. .
  • a relay coil power supply 132 that drives opening and closing of the contact 131 of the primary switching relay, and switches the power supply destination from the power supply 111 between the main power supply circuit 110 and the standby power supply circuit 120.
  • the relay unit 130 is switched in accordance with an instruction from a microcomputer using a button or the like, for example, when a device standby switch (or remote operation power supply) is turned off.
  • the relay unit 130 connects the power supply 111 to the main power supply circuit 110 when the power-on instruction is given (that is, when power supply from the outside of the device is started) and the contact 1 31 is closed.
  • contact 131 is open, connect power supply 111 to standby power supply circuit 120.
  • the power consumption when the standby power supply circuit 120 is connected is smaller than the power consumption when the main power supply circuit 110 is connected. Therefore, the device is in the low power consumption mode during standby.
  • standby power supply circuit 120 according to the present embodiment will be described in detail.
  • FIG. 2 shows an example of the configuration of the standby power supply circuit 120.
  • Standby power cycle shown in Fig. 2 The path 120 includes a standby transformer 5, a first rectification unit 33, a second rectification unit 34, a switching unit 4, and a power storage unit 3.
  • the standby transformer 5 includes an intermediate tap 8 provided between both end taps, and the primary side is connected to the power source 111.
  • the secondary output voltage value when the both-end taps of the standby transformer 5 are used is set to a value required to drive at least the relay unit 130 stably.
  • the secondary output voltage value when the intermediate tap 8 of the standby transformer 5 is used is lower than the secondary output voltage value when the both-end tap is used, and is the minimum required value for standby operation. It is set.
  • the first rectifier 33 and the second rectifier 34 rectify the secondary AC output of the standby transformer 5 into a DC.
  • the first rectification unit 33 and the second rectification unit 34 are connected to the load 121.
  • the first rectifier 33 includes a diode 10 connected to the secondary output tap and the intermediate tap 8 of the standby transformer 5, and a smoothing capacitor 12.
  • the first rectification unit 33 rectifies the secondary output when the intermediate tap 8 of the standby transformer 5 is used to direct current.
  • the second rectification unit 34 includes a diode 11 connected to both end taps of the secondary output of the standby transformer 5 and a smoothing capacitor 13.
  • the second rectifying unit 34 rectifies the secondary AC output when the both ends tap of the standby transformer 5 is used to DC.
  • the second rectification unit 34 is connected to the NPN transistor 15 or the PNP transistor 14.
  • the NPN transistor 15 and the PNP transistor 14 are used for opening and closing the second rectifying unit 34 and the subsequent stage.
  • the switching unit 4 has a function of switching the output from the first rectifying unit 33 and the second rectifying unit 34 to any one, and includes a flip-flop circuit that is driven by a negative trigger pulse. Composed.
  • the switching unit 4 connects the first rectifying unit 33 and the second rectifying unit 34 by connecting or disconnecting the second rectifying unit 34 and the load 121 according to a voltage value formed by the power storage unit 3 described later. Switch the connection with the load 121 to either one.
  • the switching unit 4 includes a flip-flop circuit trigger transistor 26 (PNP transistor), a flip-flop circuit trigger transistor 27 (NPN transistor), a flip-flop circuit output transistor 17 (NPN transistor), and a flip-flop circuit output transistor 18 (NPN transistor) and diodes 19 to 22 as a backflow preventing rectifier.
  • N The output of the flip-flop circuit output transistor 17 is connected to the driving transistor 16 (NPN transistor) of the PN transistor 15 and PNP transistor 14.
  • the outputs of the first rectifier 33 and the second rectifier 34 are connected to a stabilizing regulator via diodes 19 to 22 as rectifiers for backflow prevention.
  • the power storage unit 3 includes a capacitor, a storage battery, and the like. Power storage unit 3 is connected to the input side of regulator 23 for stabilization.
  • the base of the flip-flop circuit trigger transistor 26 constituting the flip-flop circuit of the switching unit 4 is connected to the positive electrode side of the power storage unit 3 via the voltage lower limit value detecting diode 24.
  • the base of the flip-flop circuit trigger transistor 27 constituting the flip-flop circuit of the switching unit 4 is also connected to the positive electrode side of the power storage unit 3 via the voltage upper limit value detecting Zener diode 25.
  • the Zener voltage of the voltage upper limit detection Zener diode 25 is set higher than the Zener voltage of the voltage lower limit detection Zener diode 24.
  • Charging of power storage unit 3 from first rectification unit 33 using 8 is started.
  • the voltage between the power storage unit 3 and GND (ground) is zero, so the voltage lower limit detection Zener diode 24 and the voltage upper limit detection Zener Both diodes 25 are cut off.
  • the flip-flop circuit trigger transistor 26 is turned on, the flip-flop circuit trigger transistor 27 is turned off, the flip-flop circuit output transistor 17 is turned on, and the flip-flop circuit output transistor 18 is turned off.
  • the flip-flop circuit output transistor 17 is conducting and the flip-flop circuit output transistor 18 is shut off, the transistor 16 is conducting, and the transistor 14, the transistor 28, and the transistor 15 are conducting.
  • the second rectifying unit 34 using both end taps of the standby transformer 5 is connected to the load 121 via the stabilizing regulator 23.
  • the output from the first rectifier 33 using the intermediate tap 8 of the standby transformer 5 Since the output voltage of the second rectifier 34 using the taps at both ends of the standby transformer 5 is higher than the power voltage, the output voltage from the first rectifier 33 is blocked by the backflow prevention diodes 19 and 20. .
  • the switching unit 4 connects the second rectifying unit 34 using both end taps and the load 121 in a state where the voltage to the GND of the power storage unit 3 is low.
  • the power storage unit 3 is charged via the second rectifying unit 34 using both end taps of the standby transformer 5.
  • a voltage with respect to GND exceeding a predetermined voltage value (the Zener voltage of voltage lower limit detection Zener diode 24) is formed, Zener diode 24 for voltage lower limit value detection becomes conductive.
  • the voltage upper limit detection corner diode 25 maintains the cutoff state because the corner voltage is set higher than the voltage lower limit detection corner diode 24.
  • the flip-flop circuit trigger transistor 26 is turned off. The flip-flop circuit reacts with a negative trigger pulse, so the output state is maintained.
  • the switching unit 4 performs the second rectification when the voltage to the GND of the power storage unit 3 exceeds a predetermined voltage value (the voltage of the voltage upper limit detection corner diode 25). Disconnect the connection between section 34 and load 121.
  • a predetermined voltage value the voltage of the voltage upper limit detection corner diode 25.
  • the microcomputer, the light receiving element, and the light emitting element are lit as the load 121 even in the standby state, the electric charge charged in the power storage unit 3 is discharged by the load current, and the power storage unit 3 is connected to GND. The voltage gradually decreases.
  • the electric charge charged in power storage unit 3 is discharged by the load current at the time of standby, and the voltage between power storage unit 3 and GND decreases, and the voltage between power storage unit 3 and GND becomes a voltage upper limit detection tuner.
  • the voltage upper limit detecting Zener diode 25 falls below, the voltage upper limit detecting Zener diode 25 is cut off, and the flip-flop circuit trigger transistor 27 is also cut off.
  • this flip-flop circuit reacts with a negative trigger pulse, the second rectifier 34 and the load 121 are not connected.
  • the Zener voltage of the Zener diode 24 for detecting the lower voltage limit is set to be lower than the Zener voltage of the Zener diode 25 for detecting the upper voltage limit, so that the Zener diode 24 for detecting the lower voltage limit becomes conductive. In this state, the transistor 26 for triggering the flip-flop circuit also maintains the cutoff state.
  • first rectification unit 33 is connected to the load side. . At this time, power is supplied from the power storage unit 3 and the first rectification unit 33 to the load side.
  • the voltage value output by the first rectifying unit 33 is the lower limit of the voltage value necessary for stabilization and the power supply by the second rectifying unit 34 after the first rectifying unit 33 starts supplying power. It is set based on the time until switching.
  • the switching unit 4 disconnects the second rectifying unit 34 and the load 121 until the voltage of the power storage unit 3 with respect to GND falls below the Zener voltage of the voltage lower limit value detecting diode 1 24.
  • power is supplied to the load 121 from the power storage unit 3 or the power storage unit 3 and the first rectification unit 33.
  • voltage lower limit value detection Zener diode 24 is shut off
  • the flip-flop circuit trigger transistor 26 is turned on. When the flip-flop circuit trigger transistor 26 is turned on, the state of the flip-flop circuit shifts, and the second rectifier 34 and the load 121 are connected as described above.
  • the power supply from the both end taps of the standby transformer 5 to the power supply from the intermediate tap 8 is repeated as described above.
  • the both end taps and the intermediate tap 8 of the standby transformer 5 of the standby power supply circuit 120 are alternately selected by the voltage between the power storage unit 3 and GND.
  • the standby power supply circuit 120 in the present embodiment includes the standby transformer 5 including the intermediate tap 8, the second rectifying unit 34 using the both end taps, and the first using the intermediate tap 8. 1 is provided with a switching unit 4 that switches the connection between the rectifying unit 33 and the load 121 to one, and a power storage unit 3 for supplying power supplementarily during standby.
  • the standby power supply circuit 120 monitors the output side voltage of the standby power supply circuit 120 by supplying power to the load 121 side. When the voltage value exceeds a predetermined value, the standby rectifier 34 and the load By disconnecting the connection with 121, the connection is made between the first rectification unit 33 and the load 121. By switching to the intermediate tap 8, the loss on the secondary side of the standby transformer 5 is reduced. Further, in a state where the potential formed by the power storage unit 3 is higher than the output voltage of the first rectifying unit 33, the first rectifying unit 33 and the load 121 are disconnected, and the load 121 receives power from the power storage unit 3 Power is supplied. For this reason, power consumption during standby is suppressed.
  • FIG. 3 shows the time change of the secondary side voltage of the standby power supply circuit during standby
  • FIG. 4 shows the time change of standby power during standby.
  • the secondary output voltage is the predetermined upper limit value Va (voltage upper limit detection corner diode 25 ) (State 1).
  • Va voltage upper limit detection corner diode 25
  • State 1 electric charge is stored (charged) in the power storage unit 3 up to its maximum capacity.
  • switching unit 4 is connected to standby transformer 5.
  • the lower limit value Vb of the tap switching voltage is set based on the minimum voltage value required to stabilize the voltage after rectification, and maximizes the power consumption value (load current X voltage) on the secondary side. It is set to a value that can be reduced.
  • upper limit value Va of the output voltage of standby power supply circuit 120 is a voltage necessary for relay unit 130 to drive the relay.
  • the lower limit value Vb of the tap switching voltage is assumed to be such a value that the potential of the power storage unit 3 decreases to less than Vb as the load current increases as the relay unit 130 tries to drive the relay.
  • the switching unit 4 switches to the tap connection at both ends of the standby transformer 5 and reaches the output voltage force SVa of the standby power supply circuit 120.
  • the relay unit 130 is relay-driven. As a result, in the present embodiment, relay driving by relay unit 130 is possible even if a relay driving instruction is input when the output voltage force SVa of standby power supply circuit 120 is lower.
  • FIG. 5 and FIG. 6 are block diagrams showing another example of the configuration of the standby power supply circuit.
  • the rectifying unit of the standby transformer 5 may be switched by a switching circuit 150 including a microcomputer or the like.
  • Switching circuit 150 switches the rectifying unit according to the secondary voltage value that changes according to the state of charge of power storage unit 3.
  • FIG. 6 without using the standby transformer 5 with the intermediate tap 8, separate standby transformers having different rated capacities connected to the first rectifying unit 33 and the second rectifying unit 34 are separately provided. May be provided.
  • the transformer 31 corresponds to the connection of the intermediate tap 8 of the standby transformer 5 in FIG. 2
  • the transformer 32 corresponds to the connection of the both ends of the standby transformer 5 in FIG. Even with such a configuration, the same effect as described above can be realized.
  • the present invention is applicable to all electronic devices that require standby power supply.
  • the present invention is also extremely useful for all electronic devices that require standby power supply.

Abstract

L'invention propose un circuit d'alimentation électrique pour alimenter une charge en électricité pendant un temps de veille. Le circuit d'alimentation électrique est doté d'une première section (33) de redressement qui redresse une sortie de courant alternatif ayant une première valeur de tension en un courant continu et adresse le courant continu à une charge ; d'une seconde section (34) de redressement qui redresse une sortie de courant alternatif ayant une seconde valeur de tension supérieure à la première valeur de tension en un courant continu et adresse le courant continu à la charge ; d'une section (3) de stockage électrique disposée entre la première section (33) de redressement et la seconde section (34) de redressement, qui sont disposées en parallèle, et la charge ; et d'une section (4) de commutation, qui commute la connexion de la charge avec la première section (33) de redressement et la seconde section (34) de redressement en connectant ou déconnectant la seconde section (34) de redressement vers et à partir de la charge par une correspondance à une tension formée par la section (3) de stockage électrique.
PCT/JP2007/054401 2006-09-12 2007-03-07 Circuit d'alimentation électrique et procédé d'alimentation électrique WO2008032457A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-246823 2006-09-12
JP2006246823A JP2009284556A (ja) 2006-09-12 2006-09-12 電源回路

Publications (1)

Publication Number Publication Date
WO2008032457A1 true WO2008032457A1 (fr) 2008-03-20

Family

ID=39183526

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/054401 WO2008032457A1 (fr) 2006-09-12 2007-03-07 Circuit d'alimentation électrique et procédé d'alimentation électrique

Country Status (2)

Country Link
JP (1) JP2009284556A (fr)
WO (1) WO2008032457A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5439354B2 (ja) * 2010-12-27 2014-03-12 京セラドキュメントソリューションズ株式会社 電源装置、画像形成装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03195366A (ja) * 1989-12-25 1991-08-26 Hitachi Ltd 直流安定化電源回路

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03195366A (ja) * 1989-12-25 1991-08-26 Hitachi Ltd 直流安定化電源回路

Also Published As

Publication number Publication date
JP2009284556A (ja) 2009-12-03

Similar Documents

Publication Publication Date Title
US6807075B2 (en) Start-up circuit for switched mode power supply
EP1376841B1 (fr) Alimentation de puissance à découpage et procédé de commande pour celle-ci
US9577511B2 (en) PFC DC/AC/DC power converter with reduced power loss
US9425678B2 (en) Switching power supply apparatus and semiconductor device
US8194427B2 (en) Switching power supply device
US20110110129A1 (en) Circuit arrangement and control circuit for a power-supply unit, computer power-supply unit and method for switching a power-supply unit
EP3101797B1 (fr) Dispositif d'alimentation électrique et dispositif de climatisation
JP2013078111A (ja) ドライブ回路
JP6025404B2 (ja) 電源装置及び照明装置
CN113726176B (zh) 具有延迟高压供电的转换电路、控制器及其延时高压供电方法
JP2001157452A (ja) ワールドワイド電源装置
JP2003259648A (ja) 交流−直流変換装置
KR101797230B1 (ko) Ｄｃ기기용 전원회로
JPH09261958A (ja) 無停電性スイッチングレギュレータ
JP2004274897A (ja) 省待機電力電源装置
WO2008032457A1 (fr) Circuit d'alimentation électrique et procédé d'alimentation électrique
JPH11341397A (ja) リモコン待機電源装置
JP5793673B2 (ja) 充電器
JP4030349B2 (ja) 電源回路
KR101067923B1 (ko) 소프트 스타트 및 과부하 보호 기능을 갖는 스위칭 모드 파워 서플라이
JP3841017B2 (ja) 電子機器の電源装置およびその制御方法
JPWO2005088819A1 (ja) スイッチング電源装置
JP2002125368A (ja) スイッチング電源装置及びその制御方法
JP5891370B2 (ja) 充電器
JP2004328820A (ja) 発電機制御装置用電源回路

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07737915

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07737915

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP