EP2071602A1 - Electrically excited load full voltage actuation reduced voltage sustaining driving circuit - Google Patents

Electrically excited load full voltage actuation reduced voltage sustaining driving circuit Download PDF

Info

Publication number
EP2071602A1
EP2071602A1 EP07254868A EP07254868A EP2071602A1 EP 2071602 A1 EP2071602 A1 EP 2071602A1 EP 07254868 A EP07254868 A EP 07254868A EP 07254868 A EP07254868 A EP 07254868A EP 2071602 A1 EP2071602 A1 EP 2071602A1
Authority
EP
European Patent Office
Prior art keywords
electromagnetic
voltage
electrical
excitation
load
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.)
Withdrawn
Application number
EP07254868A
Other languages
German (de)
French (fr)
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.)
Yang Tai-Her
Original Assignee
Yang Tai-Her
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 Yang Tai-Her filed Critical Yang Tai-Her
Priority to EP07254868A priority Critical patent/EP2071602A1/en
Publication of EP2071602A1 publication Critical patent/EP2071602A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/04—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current
    • H01H47/10—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current by switching-in or -out impedance external to the relay winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/223—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil adapted to be supplied by AC
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/32—Energising current supplied by semiconductor device
    • H01H47/325—Energising current supplied by semiconductor device by switching regulator

Definitions

  • the present invention is related to a device for the control of electrical excitation load such as electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, etc., or driving coils installed on the excited windings of electromotor or generator, for the full voltage actuation and reduction of excited winding voltage and for sustaining the operation of electrical excitation through the reduction of voltage for saving of energy.
  • a device for the control of electrical excitation load such as electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, etc., or driving coils installed on the excited windings of electromotor or generator, for the full voltage actuation and reduction of excited winding voltage and for sustaining the operation of electrical excitation through the reduction of voltage for saving of energy.
  • the present invention uses impedance component and switch device to match with the excitation coils of electromagnetic braking device in order to provide the full voltage actuation of excitation coil; through the switching of switch device to reduce the voltage of excitation winding in order to reduce electrical current while still maintains the operation of electrical excitation for reducing electrical current.
  • This invention could be for the application of electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, or driving coils installed on the excitation windings of electromotor or generator, etc.
  • Fig.1 is a circuit block chart of the present invention, essentially comprised of:
  • This electrically excited load full voltage actuation reduced voltage sustaining driving circuit when used in DC power, further can be as shown in Fig. 2 , which is the illustration of the circuit modified from Fig. 1 by using an impedance body connected in parallel with a capacitor to replace the switch device.
  • Fig. 2 uses the capacitor 105 connected in parallel with impedance body 104 to replace switch device 101, when actuated the capacitor 105 is charged through excitation coil 102' to form the full voltage actuation function, after actuation, when the charging voltage of capacitor 105 is in balance with the end voltage of impedance 104, the impedance body 104 forms reducing voltage function to electrical excitation load 102.
  • This electrically excited loading full voltage actuation reduced voltage sustaining driving circuit of which the applicable electrical excitation load when actually applied can base on the needs to select electrical power driving device with different characteristic at different voltage as electrical excitation load, such as (1) electrical magnetic effect application device with excitation coil including: electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, etc., or driving coils installed on the excited windings of (2) electromotor or (3) generator, and based on the need select one kind or more than one kind of same or different electrical power driving device from above loads to constitute electrical power load.
  • electrical power driving device with different characteristic at different voltage as electrical excitation load such as (1) electrical magnetic effect application device with excitation coil including: electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, etc., or driving coils installed on the excited windings of (2) electromotor or (3) generator, and based on the need select one kind or more than one kind of same or different electrical power driving device from above loads to

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

The present invention is related to a device for the control of electrical excitation load such as electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, etc., or driving coils installed on the excited windings of electromotor or generator, for the full voltage actuation and reduction of excited winding voltage and for sustaining the operation of electrical excitation through the reduction of voltage for saving of energy.

Description

    BACKGROUND OF THE INVENTION
    • (a) Field of the Invention
      The present invention is to use impedance component and switch device to match with the excitation coils of electromagnetic actuation device in order to provide the full voltage actuation to excitation coil, then switch to reduce excited winding voltage while maintain the operation of electrical excitation for reduction of electrical current. This invention can be used for the application of electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, or driving coils installed on the excitation windings of electromotor or generator.
    • (b) Description of the Prior Art:
      Conventionally electrical current is used to pass through the excitation coil to generate the electrical excitation loading for the operation of electromagnetic effect, whereby the installed excitation coil actuates and sustains the operation of electrical excitation, usually are in full voltage electrical states. The excitation current required is larger and is its drawback.
    SUMMARY OF THE INVENTION
  • The present invention is related to a device for the control of electrical excitation load such as electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, etc., or driving coils installed on the excited windings of electromotor or generator, for the full voltage actuation and reduction of excited winding voltage and for sustaining the operation of electrical excitation through the reduction of voltage for saving of energy.
    • BRIEF DESCRIPTION OF THE DRAWINGS
    • Fig. 1 is a circuit block chart of the present invention.
    • Fig. 2 is a schematic view showing circuit from Fig. 1 with impedance body in parallel with capacitor for the replacement of switch device.
    DETAILED DESCRIPTION OF THE PREFERRED MBODIMENTS
  • The present invention uses impedance component and switch device to match with the excitation coils of electromagnetic braking device in order to provide the full voltage actuation of excitation coil; through the switching of switch device to reduce the voltage of excitation winding in order to reduce electrical current while still maintains the operation of electrical excitation for reducing electrical current. This invention could be for the application of electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, or driving coils installed on the excitation windings of electromotor or generator, etc.
  • Fig.1 is a circuit block chart of the present invention, essentially comprised of:
    • -- Switch device 101: mechanical or electrical switches, relay, electromagnetic switch or solid state switch component and related operating circuit, operated by human power, or mechanical power, or fluid power, or electrical energy; using alternating or direct current energy to deliver to electrical excitation load 102 or for cutting off electricity; through the switch and operation of switch device 101 allowing the electrical excitation load 102 to actuate in full voltage; then switch over to connect the excitation coil 102' and impedance 104 in series for reducing the voltage of excitation coil 102' so as to reduce electrical current while still can maintain the operation of electrical excitation;
    • -- Electrical excitation load 102: an electromagnetic actuation device with electrical excitation coil 102', consists of devices such as electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, etc. or driving coils installed on the excited windings of electromotor or generator;
    • -- Capacitor 103: AC or DC capacitor selected to match based on the specification of electrical excitation load 102; or other component that could store and discharge electricity, that can provide assistance to the coil 102' of electrical excitation load 102 to maintain stable operation when switching the switch device 101 between series and parallel connections to excitation coil 102'. Such capacitor 103 can either be installed or not installed based on the need;
    • -- Impedance body 104: (1) when used in DC power, impedance body 104 consists of coil with resistance, or resistive impedance, or other resistive impedance component or device; at actuation, through the switching control of switch device 101, it makes the two ends of the impedance body 104 short circuited so as to use full voltage to drive excitation coil 102'; after actuation the switch devices 101 on the two ends of impedance body 104 are switched to open circuit so as to make impedance body 104 and excitation coil 102' connect in series and to lower the end voltage of the excitation coil 102' to reduce electrical current while the excitation coil 102' still can maintain electrically excited operation; (2) when used in AC power, impedance body 104 consists of resistive, inductive, or capacitive impedance component, or halve wave rectification diode, etc.; at actuation, through the switching control of switch device 101, it makes the two ends of the impedance body 104 short circuited so as to use full voltage to drive excitation coil 102'; after actuation the switch devices 101 on the two ends of impedance body 104 are switched to open circuit and make impedance body 104 and excitation coil 102' to connect in series and lower the end voltage of the excitation coil 102' to reduce electrical current while the excitation coil 102' still can maintain electrically excited operation.
  • This electrically excited load full voltage actuation reduced voltage sustaining driving circuit, when used in DC power, further can be as shown in Fig. 2, which is the illustration of the circuit modified from Fig. 1 by using an impedance body connected in parallel with a capacitor to replace the switch device. Fig. 2 uses the capacitor 105 connected in parallel with impedance body 104 to replace switch device 101, when actuated the capacitor 105 is charged through excitation coil 102' to form the full voltage actuation function, after actuation, when the charging voltage of capacitor 105 is in balance with the end voltage of impedance 104, the impedance body 104 forms reducing voltage function to electrical excitation load 102.
  • This electrically excited loading full voltage actuation reduced voltage sustaining driving circuit, of which the applicable electrical excitation load when actually applied can base on the needs to select electrical power driving device with different characteristic at different voltage as electrical excitation load, such as (1) electrical magnetic effect application device with excitation coil including: electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, etc., or driving coils installed on the excited windings of (2) electromotor or (3) generator, and based on the need select one kind or more than one kind of same or different electrical power driving device from above loads to constitute electrical power load.
  • In summary, this electrically excited load full voltage actuation reduced voltage sustaining driving circuit, on full voltage action, through the control of switch device 101, reducing the end voltage and current of the excitation coil 102' of the electrical excitation load 102 for saving electrical energy, is indeed having pertinent function, therefore hereby proposes patent application.

Claims (4)

  1. A kind of electrically excited load full voltage actuation reduced voltage sustaining driving circuit, for the control of electrical excitation load such as electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, etc., or driving coils installed on the excited windings of electromotor or generator, for the full voltage actuation and reduction of excited winding voltage and for sustaining the operation of electrical excitation through the reduction of voltage for saving of energy, with the major constituents as shown below:
    -- switch device (101): mechanical or electrical switches, relay, electromagnetic switch or solid state switch component and related operating circuit, operated by human power, or mechanical power, or fluid power, or electrical energy; using alternating or direct current energy to deliver to electrical excitation load (102) or for cutting off electricity; through the switch and operation of switch device (101) allowing the electrical excitation load (102) to actuate in full voltage; then switch over to connect the excitation coil (102') and impedance body (104) in series for reducing the voltage of excitation coil (102') so as to reduce electrical current while still can maintain the operation of electrical excitation;
    -- electrical excitation load (102): an electromagnetic actuation device with electrical excitation coil (102'), consists of devices such as electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, etc. or driving coils installed on the excited windings of electromotor or generator;
    -- capacitor (103): AC or DC capacitor selected to match based on the specification of electrical excitation load (102); or other component that could store and discharge electricity, that can provide assistance to the coil (102') of electrical excitation load (102) to maintain stable operation when switching the switch device (101) between series and parallel connections to excitation coil (102'); such capacitor (103) can either be installed or not installed based on the need;
    -- impedance body (104): (1) when used in DC power, impedance body (104) consists of coil with resistance, or resistive impedance, or other resistive impedance component or device; at actuation, through the switching control of switch device (101), it makes the two ends of the impedance body (104) short circuited so as to use full voltage to drive excitation coil (102'); after actuation the switch devices (101) on the two ends of impedance body (104) are switched to open circuit so as to make impedance body (104) and excitation coil (102') connect in series and to lower the end voltage of the excitation coil (102') to reduce electrical current while the excitation coil (102') still can maintain electrically excited operation; (2) when used in AC power, impedance body (104) consists of resistive, inductive, or capacitive impedance component, or halve wave rectification diode, etc.; at actuation, through the switching control of switch device (101), it makes the two ends of the impedance body (104) short circuited so as to use full voltage to drive excitation coil (102'); after actuation the switch devices (101) on the two ends of impedance body (104) are switched to open circuit and make impedance body (104) and excitation coil (102') to connect in series and lower the end voltage of the excitation coil (102') to reduce electrical current while the excitation coil (102') still can maintain electrically excited operation.
  2. The electrically excited load full voltage actuation reduced voltage sustaining driving circuit as claimed in Claim 1, wherein when applied to DC power, further can use the capacitor (105) connected in parallel with impedance body (104) to replace switch device (101), when actuated charging capacitor (105) through excitation coil (102'), at this time forms full voltage actuation function, after actuated, when the charging voltage of capacitor (105) is in balance with the end voltage of impedance body (104), the impedance body (104) forms reducing voltage function to electrical excitation load (102).
  3. The electrically excited load full voltage actuation reduced voltage sustaining driving circuit as claimed in Claim 1, wherein the electrical excitation load selected in the actual application, can select the electrical power driving device with different characteristics at different voltage as electrical excitation load, such as (1) electrical magnetic effect application device with excitation coil including: electromagnetic braking device, electromagnetic clutch, electromagnetic switch, electromagnetic relay, electromagnetic valve, electromagnetic iron, electromagnetic lock, and toroidal coil, etc., or driving coils installed on the excited windings of (2) electromotor or (3) generator, and based on the need select one kind or more than one kind of same or different electrical power driving device from above loads to constitute electrical power load.
  4. An electrically-excited load full voltage actuation, reduced voltage sustaining drive circuit for the control of an electrical excitation load (102) having an excitation coil (102'), the drive circuit comprising a switch device (101) for controlling electric power delivery to excitation load, a capacitor (103) whose capacitance is selected to match the specification of the excitation load, and an impedance body (104) for controlling the voltage applied to drive the excitation coil.
EP07254868A 2007-12-14 2007-12-14 Electrically excited load full voltage actuation reduced voltage sustaining driving circuit Withdrawn EP2071602A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07254868A EP2071602A1 (en) 2007-12-14 2007-12-14 Electrically excited load full voltage actuation reduced voltage sustaining driving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07254868A EP2071602A1 (en) 2007-12-14 2007-12-14 Electrically excited load full voltage actuation reduced voltage sustaining driving circuit

Publications (1)

Publication Number Publication Date
EP2071602A1 true EP2071602A1 (en) 2009-06-17

Family

ID=39590325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07254868A Withdrawn EP2071602A1 (en) 2007-12-14 2007-12-14 Electrically excited load full voltage actuation reduced voltage sustaining driving circuit

Country Status (1)

Country Link
EP (1) EP2071602A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2264721A1 (en) * 2009-04-14 2010-12-22 Tai-Her Yang Electromagnetic actuating device being actuated by high voltage and held electrification by low voltage
WO2012126683A1 (en) * 2011-03-23 2012-09-27 Valeo Schalter Und Sensoren Gmbh Blocking arrangement for at least one blocking piece and associated ignition lock
CN103062149A (en) * 2011-10-21 2013-04-24 美卓造纸机械公司 Booster for digital hydraulic controller and method thereof
CN109406927A (en) * 2018-09-20 2019-03-01 深圳市深双保电器有限公司 A kind of electromagnetic clutch coil measurement system and its test method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB431422A (en) * 1933-04-05 1935-07-08 British Thomson Houston Co Ltd Improvements in and relating to means electrically responsive to the establishment of a contact of short duration
GB669607A (en) * 1950-01-10 1952-04-02 Wilfrid Brooke Improvements in the remote control and protection of electric motors
US4563721A (en) * 1982-10-27 1986-01-07 Siemens Aktiengesellschaft Circuit arrangement for actuating electromagnetic switchgear
WO1998011584A1 (en) * 1996-09-13 1998-03-19 Cooper Industries, Inc. Current limiting circuit
DE19654378A1 (en) * 1996-12-24 1998-06-25 Mannesmann Vdo Ag Energising circuit for relay with at least one excitation coil operating at high temperature and high voltage e.g. for motor vehicle applications
DE102004052349A1 (en) * 2004-10-28 2006-05-11 Alcatel Control circuit for relay, has changeover switch connected in parallel to resistor and for bridging resistor till actuation time of relay, where switch includes capacitor whose charging time corresponds to actuation time of relay

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB431422A (en) * 1933-04-05 1935-07-08 British Thomson Houston Co Ltd Improvements in and relating to means electrically responsive to the establishment of a contact of short duration
GB669607A (en) * 1950-01-10 1952-04-02 Wilfrid Brooke Improvements in the remote control and protection of electric motors
US4563721A (en) * 1982-10-27 1986-01-07 Siemens Aktiengesellschaft Circuit arrangement for actuating electromagnetic switchgear
WO1998011584A1 (en) * 1996-09-13 1998-03-19 Cooper Industries, Inc. Current limiting circuit
DE19654378A1 (en) * 1996-12-24 1998-06-25 Mannesmann Vdo Ag Energising circuit for relay with at least one excitation coil operating at high temperature and high voltage e.g. for motor vehicle applications
DE102004052349A1 (en) * 2004-10-28 2006-05-11 Alcatel Control circuit for relay, has changeover switch connected in parallel to resistor and for bridging resistor till actuation time of relay, where switch includes capacitor whose charging time corresponds to actuation time of relay

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2264721A1 (en) * 2009-04-14 2010-12-22 Tai-Her Yang Electromagnetic actuating device being actuated by high voltage and held electrification by low voltage
WO2012126683A1 (en) * 2011-03-23 2012-09-27 Valeo Schalter Und Sensoren Gmbh Blocking arrangement for at least one blocking piece and associated ignition lock
CN103062149A (en) * 2011-10-21 2013-04-24 美卓造纸机械公司 Booster for digital hydraulic controller and method thereof
CN109406927A (en) * 2018-09-20 2019-03-01 深圳市深双保电器有限公司 A kind of electromagnetic clutch coil measurement system and its test method
CN109406927B (en) * 2018-09-20 2021-07-27 深圳市深双保电器有限公司 Electromagnetic clutch coil testing system and testing method thereof

Similar Documents

Publication Publication Date Title
EP2264722B1 (en) Electromagnetic actuating device being actuated by AC power and held by DC power
WO2015004948A1 (en) Discharge control device
CN101367479B (en) Brake device of elevator
CA2626645A1 (en) Electrically excited load full voltage actuation reduced voltage sustaining driving circuit
US7706118B2 (en) Operative control circuit of multiple electromagnetic actuating devices in series and parallel connection
EP2071602A1 (en) Electrically excited load full voltage actuation reduced voltage sustaining driving circuit
EP1769576B1 (en) Device for driving an electromagnet, particularly for operating pumps
KR20030091939A (en) Electromagnetic operating device
US20080074823A1 (en) Electromagnetic actuator parallel actuation serial sustaining driving circuit
WO2000043309A1 (en) Elevator brake control device
CN102017584A (en) System and method for quickly discharging a DC relay
US20090262479A1 (en) Electromagnetic actuating device being actuated by high voltage and held electrification by low voltage
EP2356888A1 (en) Electric fence energiser
EP2071595A1 (en) Electromagnetic actuator parallel actuation serial sustaining driving circuit
CN109801817A (en) Arc fault device in decaying electrical distributor
US20090262480A1 (en) Electromagnetic actuating device with coils capable of holding electrification in series connection after being actuated in parallel connection
CN101577489A (en) Soft switching converter suitable for sensitive bidirectional current loads
EP2264721A1 (en) Electromagnetic actuating device being actuated by high voltage and held electrification by low voltage
CN1664965A (en) Electromagnet system control device
EP2264723A1 (en) Electromagnetic actuating device with coils capable of holding electrification in series connection after being actuated in parallel connection
KR102172520B1 (en) Control system to switch DC-DC voltage converter from buck mode of operation to safe mode of operation
JP2004147476A (en) Generation circuit for reversed-polarity electric induction energy for pulse power supply
CN101546644A (en) Drive circuit for full-voltage starting and reduced-voltage maintenance of electric excitation loads
EP2264724A1 (en) Electromagnetic actuating device capable of partially holding electrification after being actuated in parallel connection
EP2264720A1 (en) Electromagnetic actuating device with driving and holding tapped coil

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20091218