Nothing Special   »   [go: up one dir, main page]

WO2003005544A2 - Circuit de commande pour dispositif inductif - Google Patents

Circuit de commande pour dispositif inductif Download PDF

Info

Publication number
WO2003005544A2
WO2003005544A2 PCT/GB2002/003008 GB0203008W WO03005544A2 WO 2003005544 A2 WO2003005544 A2 WO 2003005544A2 GB 0203008 W GB0203008 W GB 0203008W WO 03005544 A2 WO03005544 A2 WO 03005544A2
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
voltage
control circuit
inductive device
switch
Prior art date
Application number
PCT/GB2002/003008
Other languages
English (en)
Other versions
WO2003005544A3 (fr
Inventor
David John Bradbury
Original Assignee
Zetex Plc
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 Zetex Plc filed Critical Zetex Plc
Priority to AU2002314354A priority Critical patent/AU2002314354A1/en
Publication of WO2003005544A2 publication Critical patent/WO2003005544A2/fr
Publication of WO2003005544A3 publication Critical patent/WO2003005544A3/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
    • 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
    • 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
    • H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
    • 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
    • H02M3/1552—Boost converters exploiting the leakage inductance of a transformer or of an alternator as boost inductor
    • 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
    • H02M3/1555—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 for the generation of a regulated current to a load whose impedance is substantially inductive

Definitions

  • the present invention relates to a control circuit for an inductive device which is driven by a DC power supply. More particularly the invention provides a way of boosting the voltage of the power supply to power a circuit controller (e.g. a microcontroller or microprocessor) which requires a supply voltage higher than that provided by the main power supply.
  • a circuit controller e.g. a microcontroller or microprocessor
  • Controllers such as microcontrollers and microprocessors are now widely used in a host of applications ranging from sophisticated electronic equipment to mundane consumer products.
  • an electric toothbrush will typically include a microcontroller to operate features such as a battery charge indicator or a timer indicating a minimum recommended brush time.
  • power must be provided by batteries.
  • electric toothbrushes, shavers etc are commonly powered by secondary cells.
  • a control circuit for an inductive device providing a first function when driven by a main DC power supply generating a first voltage comprising: an auxiliary power supply for supplying a second voltage to a part of the circuit, the second voltage having a magnitude greater than said first voltage; a switch connected in series with the inductive device for periodically switching the power supply to the device on and off to thereby induce transient voltages higher than said first voltage; and a coupling between the auxiliary power supply and the inductive device such that the auxiliary power supply is energised by said transient voltages, the mductive device thereby providing a second function of boosting the main power supply.
  • the present invention thus obviates the need to provide an additional DC to DC step-up converter by utilising the leakage induction of the inductive device controlled by the circuit to boost the power supply.
  • the part of the circuit requiring the higher voltage supply will be a microcontroller or the like which can be readily programmed to control the periodic switching of the switch.
  • a separate switch controller could be incorporated in the circuit.
  • the periodic switching of the power supply to the inductive device can be performed regardless, of whether or not the inductive device is actually operating. Whilst the device is operating the switching will involve periodically, cutting the supply to generate the required induced voltages but only extremely short off periods will be required which will generally have no discernible effect on the primary function of the inductive device.
  • the inductive device When the inductive device is in a non-operating condition it will be necessary to pulse power supply to the device but it will be possible to generate sufficiently high induced voltages without supplying enough power to the inductive device to activate it (or for that matter to cause any significant drain in the main power supply).
  • a method for boosting a DC power supply voltage in a circuit controlling an inductive device having a first function wherein; a switch is connected in series with the inductive device across said power supply voltage; the switch is periodically switched on and off such that transient voltages of a magnitude greater than the power supply voltage are induced across the inductive device; and wherein the transient voltages are used to energise an auxiliary power supply which supplies a second voltage of a magnitude greater than said first voltage, the inductor device thereby being utilised to provide a second function of boosting the DC power supply.
  • Fig. 1 illustrates a simple ' conventional circuit for controlling operation of an electric fan
  • Fig. 2 illustrates a modification to the circuit of Fig. 1 in accordance with the present invention
  • Fig. 3 illustrates a control circuit for a re-chargeable electric device in accordance with the present invention.
  • this illustrates a simple circuit for controlling operation of an electric fan driven by a IV electric motor 1 powered by a battery power supply 2.
  • the circuit includes a microcontroller 3 for controlling operation of the fan in response to ambient temperature changes. That is, the ' microcontroller 3 controls the gate drive voltage of a power mosfet 4 to switch the fan motor 1 on or off in response to a signal supplied to the microcontroller 3 by a temperature sensor 5.
  • a capacitor 6 is connected across the battery terminals to de-couple the power supply 2 from the microcontroller 3.
  • the microcontroller 3 is a conventional low cost controller which requires a 5V supply for operation and to provide the mosfet 4 with sufficient gate drive voltage to switch to its lowest resistance state. Accordingly, although the fan motor 1 requires a relatively low voltage for operation, the multi-cell power supply 2 is needed to provide the voltage required by the microcontroller 3.
  • FIG. 2 this illustrates a simple low-cost modification of the circuit of Fig. 1 which enables use of a low voltage single cell power supply 7 in place of the multi-cell power supply 2.
  • the control circuit includes a diode 8 coupled in series between a terminal of the fan motor 1 and the decoupling capacitor 6.
  • the microcontroller 3 is programmed with additional code to periodically pulse the power supply to the fan motor 1 on and off regardless of its current operating state. As the power supply to the fan motor 1 is pulsed off, relatively high transient voltages are induced across the motor 1 due to the leakage inductance.
  • the diode 7 turns on and dumps current into the capacitor 6 where it is stored and used to power the microcontroller 3 (in other words, energy stored in the inductance field of the fan motor 1 is transferred to the capacitor 6 via the diode 7). Since the transient voltages will be much higher than the main supply voltage, the capacitor 6 can easily be maintained at the required 5V. The capacitor 6 thus forms an auxiliary power supply for powering the microcontroller 3, which is energised by the transient voltages induced when the fan motor 1 is pulsed off.
  • the mosfet 4 will still be driven to operate the fan 1 in accordance with the temperature measured at sensor 5, and as mentioned above, the periodic pulsing of power to the fan 1 to generate the transient voltages required to charge capacitor 6 will be maintained regardless of the present operating state of the fan, i.e. whether it is on or off. However, the switching cycle required to transfer sufficient energy to the capacitor 6 to maintain the required microcontroller operating voltage will be different depending on whether the fan is operating or not.
  • a practical circuit would preferably include additional means to enable the microcontroller 3 to monitor its supply voltage and that the microcontroller would be programmed to control the duty cycle of the switching pulses to regulate its own supply.
  • voltage monitoring may be achieved by an analogue input to the microcontroller (if available) or by a simple external monitor.
  • the mosfet 4, diode 7, and capacitor 6 together with the inductance of the fan motor 1, operates essentially in the same way as a conventional switched inductor step-up converter.
  • the fundamental difference between the present invention and the prior art is that no separate inductive load is required because the transient inductor voltages are generated by appropriate switching of the fan motor 1.
  • the fan motor 1 is therefore fulfilling two functions, namely its primary function of driving the fan and a secondary function of boosting the power supply voltage.
  • the present invention can be implemented wherever the control circuit requiring the boosted power supply includes a device of sufficient inductance to generate the required voltages when the main power supply is disconnected.
  • the very wide ranging potential applications of the invention will be readily apparent to the appropriate skilled person.
  • a particular example of a practical circuit implementing the present invention is illustrated in Fig. 3.
  • Fig. 3 " is a schematic illustration of the control circuit of a simple rechargeable appliance such as an electric toothbrush or shaver comprising an electric motor.
  • the illustrated appliance comprises a low voltage electric motor 1 (in this example having a resistance of about 300m ⁇ and a leakage inductance of lOO ⁇ H) powered by a main power supply comprising a single secondary cell 7 (in this example a 1.2V, lAhr NiMH rechargeable cell).
  • a low cost commonly available microcontroller 3 is powered by a auxiliary power supply comprising a 4.7 ⁇ F capacitor 6 which is coupled to a terminal of the motor 1 via diode 8 and is energised by transient voltages induced by periodic switching of the power supply to the motor 1 by mosfet 4 (under control of the microcontroller 3 programmed accordingly).
  • each of these components functions in essentially the same way as the corresponding components of Fig. 2 to boost the low voltage power supply 7 to the relatively high voltage required by the microcontroller 3.
  • the ⁇ microcontroller 3 has a minimum operating voltage of 2.5V and the various circuit components are selected to provide a voltage of approximately 4.5 V.
  • the control circuit of Fig. 3 includes a simple voltage indicator comprising a bipolar transistor 9 and three resistors 10, 11 and 12 (which in this example have values of 1M ⁇ , and 1M ⁇ 200K ⁇ respectively).
  • the microcontroller 3 is programmed to vary the duty cycle of the gate drive signal provided to the mosfet 4 in response to the voltage supplied by the capacitor 6 to thereby regulate its own power supply.
  • An operating switch 13 (e.g. a momentary action push button switch) is connected to the microcontroller 3 along with a 1M ⁇ pull-up resistor 14 for activating and deactivating the motor 1.
  • the microcontroller 3 is programmed to adjust the duty cycle of the control signal supplied to the mosfet 4 dependant on whether the motor
  • switch 13 is opened or closed.
  • a charging circuit for the power supply 7 comprises a charge coil 15, a diode 16 and a resistor 17.
  • the charge coil 15 (which will typically be built into the base of the appliance) provides one half of a transformer, the other half of which will be located in a suitable charge stand (not shown) as is conventional.
  • the charge coil coupling is designed to produce a peak voltage of about 5V.
  • the state of charging is indicated by an LED 18 which is connected to the ' microcontroller 3 via, a 1K ⁇ resistor 19 and is activated in response to a sensing signal which reaches the microprocessor 3 via a diode 20.
  • the charge coil 15 is also coupled to the microcontroller 3 via a diode 21 to supply a "wake up" voltage to the microcontroller 3. This is required because when the power supply 7 is initially connected (or at any other time when the capacitor 6 is not charged sufficiently to provide the necessary auxiliary power supply voltage) the voltage applied to the microcontroller 3 via the diode 8 will be far below the minimum operating voltage of the microcontroller (which in this case is approximately 2.5V). However, as soon as the appliance is placed on its charger a voltage sufficient to start the microcontroller will be supplied via the diode 21. Once the microcontroller is "awake” it will manage its own power supply by appropriate control of the mosfet 4.
  • the circuit is designed to supply approximately 4.5V to the microcontroller 3.
  • the duty cycle of the switching signal supplied to the mosfet 4 by the microcontroller 3 necessary to maintain 4.5V will depend on whether or not the motor is operating.
  • the microcontroller 3 controls the mosfet 4 to pulse the motor on for approximately 50 ⁇ s every 150ms. This is not sufficient to activate the motor and the average current drain from the power supply 7 is approximately lOO ⁇ A which is substantially less than the self-discharge rate of the secondary cell used.
  • the frequency with which the power supply must be interrupted will depend upon the current load on the motor.
  • the power supply must be switched off for about 2 ⁇ s every 400 ⁇ s when the motor is unloaded and about 2 ⁇ s every 2ms when the motor is heavily loaded. This has very little effect on the operation of the motor 1, slowing the motor by between about 0.5 to 0.1%.
  • a prototype appliance constructed according to the schematic of Fig. 3 has functioned with main power supplies as low as .IV. Although such a deep discharge may not be suitable for some secondary cell technologies-, this extremely low operating voltage would allow use of alternate power supplies such as solar cells and thermocouples.
  • the microcontroller 3 could be programmed to control many more operations than the simple charge indicator and switch control described above.
  • other operations could include such things as motor on period time warnings by flashing an LED, or momentarily varying the motor speed; automatic shut down if the motor is accidentally left running; motor disabling during charging; battery charge level indication; appliance maintenance timing; audio features etc.
  • motor on period time warnings by flashing an LED, or momentarily varying the motor speed
  • automatic shut down if the motor is accidentally left running motor disabling during charging
  • battery charge level indication battery charge level indication
  • appliance maintenance timing audio features etc.
  • the present invention is not limited to simple consumer products, or products incorporating a motor.
  • the invention can be applied in any control circuit associated with an inductive device.
  • Other simple examples of potential applications include electronic locks, door releases, alarms etc. The wide range of potential applications of the present invention will be readily apparent to the appropriately skilled person.

Landscapes

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

Abstract

La présente invention concerne un circuit de commande destiné à un dispositif (1) inductif qui offre une première fonction lorsqu'il est attaqué par une alimentation (2) en courant continu générant une première tension. Ce circuit comprend une alimentation électrique auxiliaire (6) destinée à fournir une seconde tension à une partie (3) de ce circuit, cette seconde tension étant plus importante que la première. Un commutateur (4) est connecté en série à un dispositif (1) inductif de façon à commuter périodiquement l'alimentation électrique de ce dispositif (1) en circuit ou hors circuit induisant ainsi des tensions transitoires supérieures à la première tension. L'alimentation (3) électrique auxiliaire et le dispositif (1) inductif sont raccordés de sorte que cette alimentation électrique (3) auxiliaire soit alimentée par ces tensions transitoires, le dispositif (1) inductif offrant ainsi une seconde fonction d'apport de tension additionnelle à l'alimentation principale.
PCT/GB2002/003008 2001-07-04 2002-06-28 Circuit de commande pour dispositif inductif WO2003005544A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002314354A AU2002314354A1 (en) 2001-07-04 2002-06-28 A control circuit for an inductive device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0116400.3 2001-07-04
GBGB0116400.3A GB0116400D0 (en) 2001-07-04 2001-07-04 A control circuit for an inductive device

Publications (2)

Publication Number Publication Date
WO2003005544A2 true WO2003005544A2 (fr) 2003-01-16
WO2003005544A3 WO2003005544A3 (fr) 2003-04-03

Family

ID=9917951

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/003008 WO2003005544A2 (fr) 2001-07-04 2002-06-28 Circuit de commande pour dispositif inductif

Country Status (3)

Country Link
AU (1) AU2002314354A1 (fr)
GB (1) GB0116400D0 (fr)
WO (1) WO2003005544A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005071823A1 (fr) * 2004-01-27 2005-08-04 Robert Bosch Gmbh Module et procede pour faire varier la vitesse de rotation d'un moteur
WO2007101618A3 (fr) * 2006-03-03 2008-01-17 Karsten Zeiske Dispositif et procédé d'alimentation en tension continue de circuits d'excitation électroniques pour des moteurs électriques
EP2916426A1 (fr) * 2014-03-06 2015-09-09 Legrand France Dispositif d'éclairage tel qu'un bloc autonome d'éclairage de sécurité et procédé d'alimentation électrique d'un microcontrôleur dans un tel dispositif d'éclairage
CN110018723A (zh) * 2019-03-26 2019-07-16 山东超越数控电子股份有限公司 一种桌面式一体机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538942A1 (fr) * 1982-12-29 1984-07-06 Renault Dispositif de commande d'organe(s) electromagnetique(s) a actionnement rapide, tel(s) qu'electrovanne(s) ou injecteur(s)
US5377094A (en) * 1993-05-14 1994-12-27 Siliconix Incorporated Push-pull output stage for driving motors which generates auxiliary voltage supply
FR2743220A1 (fr) * 1995-12-29 1997-07-04 Valeo Electronique Dispositif pour la generation d'une tension pour la commande de la grille d'un transistor mosfet dans un circuit de vehicule automobile
WO2002015374A1 (fr) * 2000-08-14 2002-02-21 Braun Gmbh Montage et appareil electrique comportant une charge inductive et un convertisseur a inductance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538942A1 (fr) * 1982-12-29 1984-07-06 Renault Dispositif de commande d'organe(s) electromagnetique(s) a actionnement rapide, tel(s) qu'electrovanne(s) ou injecteur(s)
US5377094A (en) * 1993-05-14 1994-12-27 Siliconix Incorporated Push-pull output stage for driving motors which generates auxiliary voltage supply
FR2743220A1 (fr) * 1995-12-29 1997-07-04 Valeo Electronique Dispositif pour la generation d'une tension pour la commande de la grille d'un transistor mosfet dans un circuit de vehicule automobile
WO2002015374A1 (fr) * 2000-08-14 2002-02-21 Braun Gmbh Montage et appareil electrique comportant une charge inductive et un convertisseur a inductance

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005071823A1 (fr) * 2004-01-27 2005-08-04 Robert Bosch Gmbh Module et procede pour faire varier la vitesse de rotation d'un moteur
WO2007101618A3 (fr) * 2006-03-03 2008-01-17 Karsten Zeiske Dispositif et procédé d'alimentation en tension continue de circuits d'excitation électroniques pour des moteurs électriques
EP2916426A1 (fr) * 2014-03-06 2015-09-09 Legrand France Dispositif d'éclairage tel qu'un bloc autonome d'éclairage de sécurité et procédé d'alimentation électrique d'un microcontrôleur dans un tel dispositif d'éclairage
FR3018401A1 (fr) * 2014-03-06 2015-09-11 Legrand France Dispositif d'eclairage tel qu'un bloc autonome d'eclairage de securite et procede d'alimentation electrique d'un microcontroleur dans un tel dispositif d'eclairage
CN110018723A (zh) * 2019-03-26 2019-07-16 山东超越数控电子股份有限公司 一种桌面式一体机

Also Published As

Publication number Publication date
WO2003005544A3 (fr) 2003-04-03
AU2002314354A1 (en) 2003-01-21
GB0116400D0 (en) 2001-08-29

Similar Documents

Publication Publication Date Title
US4554500A (en) Battery charging apparatus and method
EP0721691B1 (fr) Systeme et procede de conversion bimode de courant continu-continu
EP0617501A1 (fr) Circuit de commande et méthode pour maintenir une grande efficacité couvrant un large domaine de courants dans un régulateur à découpage
TWI608505B (zh) 用於電器的基於超級電容器的能量儲存之設備、方法及電路
EP1079495A2 (fr) Chargeur de batterie à faible dissipation de chaleur
AU761118B2 (en) Low power indication circuit for lead acid battery pack
US7847436B2 (en) Modular power supply
WO2014011685A1 (fr) Convertisseur de puissance avec consommation de puissance quasiment nulle
US6037756A (en) Power supply with mixed mode batteries
JP3566056B2 (ja) 電子機器
EP1330016A3 (fr) Circuit de démarrage d'une alimentation de puissance
JP2008141806A (ja) 太陽電池による蓄電池充電回路
JP6017563B2 (ja) 電池及びｄｃ−ｄｃコンバータを有する電気器具のための電力供給回路
WO2003005544A2 (fr) Circuit de commande pour dispositif inductif
KR20030020933A (ko) 배터리 팩의 방전 재생 회로
JPS6122606Y2 (fr)
RU2156533C1 (ru) Устройство нивелирования разбаланса напряжений на соединенных между собой ячейках аккумуляторной батареи или батареях (варианты)
JPH0576141A (ja) 直流電源の立ち上がり特性改善装置
RU24577U1 (ru) Многорежимный источник питания
EP3754809B1 (fr) Gestion d'alimentation
EP2355297B1 (fr) Procédé de chargement d'une batterie, ainsi qu'un petit appareil électrique fonctionnant à batterie et circuit de chargement
GB2303229A (en) Constant power output circuit for an electric fence
RU2054223C1 (ru) Электропривод переменного тока
RU2310963C1 (ru) Автоматизированное устройство для ускоренного заряда аккумуляторных батарей асимметричным током
KR100287831B1 (ko) 노트북 컴퓨터의 차량용 충전기

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

ENP Entry into the national phase

Ref document number: 2004116308

Country of ref document: RU

Kind code of ref document: A

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP