EP3850652A1 - Module relais - Google Patents

Module relais

Info

Publication number
EP3850652A1
EP3850652A1 EP19758413.9A EP19758413A EP3850652A1 EP 3850652 A1 EP3850652 A1 EP 3850652A1 EP 19758413 A EP19758413 A EP 19758413A EP 3850652 A1 EP3850652 A1 EP 3850652A1
Authority
EP
European Patent Office
Prior art keywords
relay
switching element
switching
relay module
circuit branch
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Withdrawn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
EP19758413.9A
Other languages
German (de)
English (en)
Inventor
Stefan Benk
Ralf Hoffmann
Christian Adam
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
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 Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP3850652A1 publication Critical patent/EP3850652A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • 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
    • H01H47/002—Monitoring or fail-safe circuits
    • H01H47/004—Monitoring or fail-safe circuits using plural redundant serial connected relay operated contacts in controlled circuit
    • H01H47/005—Safety control circuits therefor, e.g. chain of relays mutually monitoring each other
    • 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
    • H01H47/226—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 for bistable relays

Definitions

  • the present invention relates to a relay module, in particular a
  • electromagnetic relay module and an arrangement with a
  • a known solution consists in assigning pulse width modulation (PWM) to the supply voltage and in this way reducing the coil current to an advantageous value for the desired period of time.
  • PWM pulse width modulation
  • microelectronic components and correspondingly complex switching architectures are required.
  • the PWM can also cause electromagnetic effects on the environment, which can be undesirable.
  • the disclosure is based on the knowledge that the above task is solved by a relay module that enables an increase in the
  • Total resistance of the relay module after the relays have been fully tightened in particular the relay coils of both relays of the relay module, with unchanged supply voltage, in particular constant and stable applied voltage, to reduce the coil current and thus to lower the relay power or the electrical power and thus the heat development or the heat loss power.
  • the task is performed by an electromagnetic
  • Relay module solved, with a first circuit branch having a first capacitor and a first relay connected in series with the first capacitor, a second circuit branch having a second capacitor and a second relay connected in series with the second capacitor, a switching element which between the is arranged first circuit branch and the second circuit branch and has a first switching state and a second switching state.
  • the first circuit branch and the second circuit branch are arranged in a parallel connection.
  • the switching element is designed in
  • Relay module can be defined in such a way that the first armature of the first relay and the second armature of the second relay are closed, that is to say both relays have pulled through completely.
  • the design of the present relay module with two interconnected relays enables the overall resistance of the relay module to be changed, in particular increased, by converting the circuit arrangement of the two relays from a parallel connection into a series connection of the relays.
  • the total resistance of the relay module is thus increased.
  • a reduced coil current in turn leads to a reduction in the magnetic flux through the respective relays and, associated therewith, to a reduction in the magnetic field in the respective relay.
  • the first and the second circuit branch are arranged in parallel and the first capacitor and the second capacitor are charged, are resistors of the first capacitor and the second capacitor for the
  • the first capacitor and the second capacitor are again such
  • the dimensioning can depend on the operating voltage, the coil resistance, i.e. the internal resistance, and the inductance. In this way, reaching the necessary flooding to achieve the working state of the
  • Relay module can be guaranteed.
  • the capacitors and components of the switching element can be designed in such a way that the switchover occurs without an additional switching pulse.
  • the holding value is typically 50%, conservative at 60% nominal voltage.
  • the switching element switches again from the second switching state to the first switching state.
  • a reduction in the heat development of the relays is achieved by reducing the flow and thus reducing the respective coil power of each relay.
  • a reduction in the development of heat is advantageous due to the low thermal capacity of the components.
  • the relay module has a stop position in which a first armature is attracted by the first relay and in which a position is drawn by the second relay second armature is attracted, and wherein the switching element is designed to change from the first switching state to the second switching state as soon as the
  • Relay module has taken the stop position
  • Tightening the anchors requires a higher flow, in particular an initial flow, than holding the anchors by the respective relay.
  • a higher power is necessary than to hold the anchors.
  • the flow through the coils of the relays can be reduced.
  • the switching time of the switching element can therefore be selected so that switching to the series connection of the relays takes place as soon as both anchors are attracted. The current is reduced at the same voltage due to the increased total resistance and the power used is therefore also reduced.
  • the first capacitor is formed in the first
  • the second capacitor is designed to provide the second relay with a second charging current in the first switching state of the switching element.
  • the first charging current is suitable for causing the first armature to be pulled and held
  • the second charging current is suitable for causing the second armature to be drawn and held.
  • the charging current of the capacitors can be sufficient to switch the relays. This means that the charging current of the capacitors is sufficient to provide the initial flow for the respective relay.
  • the capacitors can be used to set a switching time for the switching element, which switches when both armatures are attracted.
  • the relay module can be electrically connected to a voltage source which is set up to provide a constant voltage, the first circuit branch and the second circuit branch being connectable to the voltage source.
  • the voltage source can be a DC voltage source that provides a constant voltage.
  • the voltage can be, for example, 12V or 24V and thus operate both relays with a corresponding voltage value.
  • the voltage can also have other values.
  • the level of tension can vary from one Application of the relay module. Due to the voltage source, the current when switching to the series circuit can then be increased due to the then
  • the first capacitor provides the first charging current and the second capacitor provides the second charging current when the constant voltage is applied to the first circuit branch and to the second circuit branch.
  • the first capacitor and the second capacitor are charged when the constant voltage is applied.
  • the voltage across the capacitors increases.
  • the charging current decreases over time. However, the charging current is sufficient to switch the relays.
  • the first switching state of the switching element comprises a high resistance of the switching element in comparison to the resistance of the
  • a high resistance can limit a current flow through the switching element to such an extent that it can be neglected. If the resistance is reduced, a current flow through the switching element is allowed. This can be seen as a switching operation.
  • the switching element comprises a diode, the diode being set up to transition from the first switching state to the second switching state when a forward voltage of the diode is reached.
  • the switching element is designed here as a diode, which is operated when the two coils are connected in series in the flow direction or forward direction. Switching from parallel to series connection can be done by the
  • Voltage difference between the first circuit branch and the second circuit branch is at least equal to the forward voltage of the diode. This means that a voltage below the forward voltage corresponds to a first switching state and a voltage at the forward voltage or higher corresponds to the second switching state.
  • the forward voltage corresponds to the
  • Threshold voltage means the voltage which can be read in the diode characteristic diagram if the apparently straight part is extended to the x-axis.
  • the switching process of the switching element which converts the parallel connection of the first circuit branch and the second circuit branch into the series connection of the first relay and the second relay, begins as soon as the voltage difference between the first
  • Circuit branch and the second circuit branch at least the
  • the switching time is determined by the capacitance of the capacitors, i.e. the relay, with a fixed internal resistance and coil dimensions. of the first capacitor and the second capacitor.
  • the switching time results from the voltage difference in the central branch of the circuit. At the beginning, this is equal to the total voltage applied, with zero reactance of the capacitors.
  • the initially negative voltage between the first circuit branch and the second circuit branch is reduced in magnitude, that is to say towards zero. If the voltage becomes positive and greater than the forward voltage of the diode, the diode switches.
  • the switching element comprises at least one further diode and / or a series resistor in order to influence the time of the transition from the first switching state to the second switching state.
  • the switching time can be varied by a plurality of diodes in series and / or in combination with a series resistor to the diode between the first circuit branch and the second circuit branch. That is, the relay module can be adapted so that the switching element switches at a desired time, relative to the switching state of the relays. Due to the additional voltage drop across the diode and the resistor, the current in series connection of the coils can be further reduced. The heat losses can be reduced.
  • the Series resistor can change the diode current when the relay and the
  • Holding current i.e. limit the operating current of the relay module in the hold state.
  • the switching element comprises a transistor, in particular a bipolar transistor or a field effect transistor, i.e. a MOSFET.
  • the switching element is designed as a robust component with high switching accuracy and switching reliability.
  • the transistor is a PNP bipolar transistor, or an NPN bipolar transistor.
  • a PNP transistor can reduce the current in the series connection by half compared to the parallel connection. This effect can be enhanced with an NPN transistor and thus the current can be further reduced.
  • the transistor is a MOSFET transistor.
  • the transistor is de-energized during the switching process, so that the occurrence of power loss during the switching process on the switching element is avoided.
  • High blocking currents can be avoided and voltage peaks can be assessed more precisely by using blocking diodes.
  • the use of a MOSFET is more energy efficient than with another transistor, since no current flows to the control connection of the transistor. Voltage peaks on the coils when the transistor is switched off can also be avoided.
  • the transistor is preceded by an RC element and a voltage divider, a time constant being defined via the RC element and the voltage divider.
  • the switching time of the switching element can be matched to the point in time at which the armatures are fully pulled into the holding position, that is, by means of the time constant of the RC element Relay module has entered the holding state.
  • the RC element has a third resistor and a third capacitor.
  • the dimensions of the third resistor and the third capacitor are matched to the first capacitor and the second capacitor.
  • a point in time at which the stop position is reached can thus be determined over the duration of the charging of the first capacitor and the second capacitor.
  • Switching element can be reached with the time of fully tightening the armature in the holding position. This gives the technical advantage that voltage peaks at the second excitation coil are avoided.
  • the transistor is preceded by a controller, in particular a microcontroller, which is set up as a function of a measured current in the first circuit branch and / or the second
  • a switching point in time can also be adapted by a control, such as a microcontroller, for example in an operation by reprogramming or adjusting the control.
  • a control such as a microcontroller, for example in an operation by reprogramming or adjusting the control.
  • An external voltage pulse can be given from the controller to the transistor, which leads to switching.
  • the individual relay currents are measured, i.e. the currents through the relays.
  • the controller is set up to provide a switching voltage for switching the switching element when the measured current falls below a predetermined limit value, in particular a predetermined one
  • the charging current of the capacitors is monitored here. If it drops to a predetermined limit after a maximum, it can be assumed that the relays have successfully pulled the respective armature.
  • the charging current is also the current that flows through the respective coil in the first circuit branch or second circuit branch.
  • a first blocking diode is arranged between the first relay and the switching element in order to block a current flow from the switching element to the first relay and a second blocking diode is arranged between the second relay and the switching element in order to block a current flow from the second relay to block the switching element in order to limit a switch-off current.
  • the blocking diodes can undesirably prevent current flow through the relays.
  • a cut-off current can be limited here.
  • the relay module is a safety relay module to perform a safety-relevant function and the first relay and the second relay are redundant relays.
  • a safety-relevant function can be a function that affects the safety of a user.
  • a user can be in front of a
  • the object is achieved by an arrangement with an electromagnetic relay module of the type described above in an emergency stop switch or a protective door switch or a magnetic switch or with a light grid.
  • the safety of the respective component can be kept high and, in addition, the power of the relay module can be reduced as described above.
  • Fig. 1 is an equivalent circuit diagram of a relay module according to a
  • Fig. 2 is an equivalent circuit diagram of a relay module according to another
  • Fig. 3 is an equivalent circuit diagram of a relay module according to another
  • Embodiment; Fig. 4 is an equivalent circuit diagram of a relay module according to another
  • Fig. 5 is an equivalent circuit diagram of a relay module according to another
  • FIG. 6 shows an equivalent circuit diagram of a relay module according to another
  • FIG. 7 shows a schematic illustration of an arrangement with a relay module according to an exemplary embodiment.
  • Embodiments can be combined with one another, unless specifically stated otherwise.
  • FIG. 1 shows an equivalent circuit diagram of a relay module 100 according to one
  • the electromagnetic relay module 100 comprises a first relay 103 and a second relay 105.
  • the first relay 103 has a first internal resistance 107 and a first coil 109.
  • the first coil 109 is set up to generate a first magnetic field and to attract a first armature (not shown in the figures) through the first magnetic field.
  • the second relay 105 has a second internal resistance 11 1 and a second coil 1 13.
  • the second coil 1 13 is set up to generate a second magnetic field and through the second
  • Magnetic field to attract a second anchor also not shown in the figures. If the first armature is attracted, the first relay 103 is in a hold state. If the second armature is attracted, the second relay 105 is in a hold state. If the first armature and the second armature are both attracted at the same time, the relay module 100 is in a holding state.
  • the relay module 100 has a first capacitor 115 and a second
  • the first capacitor 115 is connected in series with the first relay 103.
  • the first capacitor 115 and the first relay 103 are arranged in a first circuit branch 119.
  • the second capacitor 117 is connected in series with the second relay 105.
  • the second capacitor 1 17 and the second relay 105 are arranged in a second circuit branch 121.
  • the first circuit branch 119 and the second circuit branch 121 are arranged parallel to one another.
  • the relay module 100 has a voltage source 123.
  • the voltage source 123 is a constant voltage source and is configured to output a constant voltage. That is, the voltage is regulated to a setpoint if
  • voltage source 123 provides a constant voltage of 12V.
  • voltage source 119 provides another constant voltage, for example 24V.
  • Voltage branch 121 are electrically connected to voltage source 123.
  • the first capacitor 115 and the second capacitor 117 are charged.
  • a first charging current flows through the first relay 103.
  • a second charging current flows through the second relay 103.
  • the first capacitor 115 is dimensioned such that the first charging current is suitable, a magnetic flooding of the first coil and so on
  • the second capacitor 115 is dimensioned such that the second charging current is suitable for causing a magnetic flooding of the second coil and thus a corresponding magnetic field which is suitable for fully attracting the second armature of the second relay 103 and thus the second relay 103 in to move the stop position.
  • Both capacitors 115, 117 are dimensioned such that the charging current is sufficient, one in the coils 109, 1 13 used
  • each of which generates a magnetic field to attract the corresponding anchor.
  • the relay module 100 has a switching element 125.
  • the switching element 125 is arranged between the first circuit branch 119 and the second circuit branch 121 such that the switching element 125 is arranged between the first relay 103 and the first capacitor 115 and between the second capacitor 119 and the second relay 105.
  • the switching element 125 has a first one
  • the switching element 125 In the first switching state of the switching element 125, the switching element 125 is open or high-resistance in order to prevent current flow from the first relay 103 to the second relay 105 through the switching element 125. Preventing this can be understood to mean that the current flow is interrupted or limited to such an extent that it can be neglected in the normal application of the relay module 100.
  • the first circuit branch 119 In the second switching state of the switching element 125, the first circuit branch 119 is electrically connected to the second circuit branch 121 by the switching element 125, so that an electrical current can flow through the switching element 125.
  • the switching element 125 is closed or has a low resistance.
  • the switching element 125 is set up to switch from the first switching state to the second switching state when the relay module 100 reaches the holding state, that is to say as soon as the first armature and the second armature are attracted.
  • the first capacitor 115 and the second capacitor 117 are high-impedance at the switching time of the switching element 125 and are not part of the series connection of the first relay 103 and the second relay 105. They thus ensure that a primary current path along the series connection of the first relay 103 and the second relay 105 runs.
  • the parallel connection of the first and second circuit branches 101, 102 is switched over to connect the first relay 103 and the second relay 105 in series, the total resistance of the first relay 103 and the second relay 105 is increased. This has a reduction in the coil currents, at constant voltage caused by the
  • the switching element 125 comprises a diode 201 and a series resistor 203 connected upstream of the diode 201. The time of the
  • Voltage difference between the first circuit branch 119 and the second circuit branch 121 can be coupled.
  • the switching element 125 accordingly switches as soon as the voltage difference between the first circuit branch 119 and the second circuit branch 121 corresponds to the forward voltage of the diode 201.
  • this includes
  • Switching element 125 a plurality of diodes connected in series.
  • the switching element 125 additionally comprises a plurality of series resistors connected in series.
  • the switching element 125 comprises a transistor 301.
  • the transistor 301 is a PNP bipolar transistor. In a further embodiment, it is a different transistor, in particular an NPN bipolar transistor.
  • the transistor 301 is connected via the base connection to a voltage divider 303, which comprises a first resistor 305 and a second resistor 307.
  • the transistor 301 is additionally connected to an RC element 309 via the base connection electrically connected, which comprises a third resistor 31 1 and a third capacitor 313 connected.
  • the switching time of the transistor 301 can be coordinated with the timing of the complete attraction of the first armature and the second armature, ie the dimensioning of the RC element 309 and the first resistor 305 and the second resistor 307 of the voltage divider 303
  • the switching time of the switching element 125 can be coupled, in particular coupled, to the reaching of the holding state of the relay module 100.
  • the first circuit branch 119 additionally has a first blocking diode 315 and the second circuit branch 121 has a second blocking diode 317.
  • the first blocking diode 315 and the second blocking diode 317 are arranged between the first relay 103 and the first capacitor 115 or the second capacitor 117 and the second relay 105 such that the first blocking diode 315 and the second blocking diode 317 form part of the series circuit with the first Relays 104 and the second relay 105 are when the transistor is in the conducting state and the switching element 103 is thus in the second switching state.
  • one or both blocking diodes 115, 117 can be omitted.
  • FIG. 4 shows an equivalent circuit diagram of a relay module 400 according to a further exemplary embodiment.
  • the switching element 125 as described for FIG. 3, is the transistor 301.
  • the first circuit branch 119 has the first blocking diode 315 and the second circuit branch 121 has the second blocking diode 317.
  • a controller 401 in particular a microcontroller, is provided, which is connected to the base connection of the transistor 301 and is set up to transmit a switching signal to the via an output of the controller Base terminal of transistor 301 to send.
  • Switching element 125 i.e. the transistor 301, from the first switching state to the second switching state.
  • the circuit according to the exemplary embodiment shown in FIG. 4 comprises one
  • the current measuring device 403 does not include one current measuring resistor shown. In a further exemplary embodiment, the current is measured contactlessly using a current clamp.
  • the controller 401 If the measured current reaches a limit value stored in the controller, the controller 401 generates a control signal and sends the control signal via an output of the controller 401 to the transistor 301 in order to send the transistor 301
  • FIG. 5 shows an equivalent circuit diagram of a relay module 500 according to a further exemplary embodiment.
  • the relay module 500 according to the exemplary embodiment from FIG.
  • the transistor 301 is a field effect transistor, in particular a metal oxide semiconductor field effect transistor, or MOSFET for short.
  • the voltage divider 303 and the RC element 309 are in this case connected to the gate connection of the MOSFET in order to adapt the switching instant of the switching element 125 to the transition of the relay module 100 into the holding state.
  • FIG. 6 shows an equivalent circuit diagram of a relay module 600 according to a further exemplary embodiment.
  • the relay module 600 according to the exemplary embodiment from FIG.
  • the transistor 301 is a field effect transistor, in particular a metal oxide semiconductor field effect transistor, in short MOSFET.
  • the controller 401 is connected to the gate connection of the MOSFET in order to adapt the switching time of the switching element 125 to the transition of the relay module 100 into the holding state.
  • the arrangement 700 comprises the relay module 100 and an emergency stop switch 701.
  • one of the relay modules 200, 300, 400, 500 or 600 is installed.
  • another relay module 200, 300, 400, 500 or 600 is installed.
  • the exemplary embodiment comprises the arrangement 700, the relay module 100 and a protective door switch or a magnetic switch or a light grid.
  • the relay module 100 is arranged such that a safety-relevant function of the arrangement 700 can be fulfilled by the relay module 100.
  • the relay module 100 is actuated by the emergency stop switch 701 in order to interrupt a circuit 703.
  • Circuit 703 is only partially shown in FIG. 7 for reasons of clarity.
  • the circuit 703 can comprise further components in parts not shown or can be connected to machines.
  • the first relay 103 and the second relay 105 interrupt the circuit 703 redundantly. This ensures that the circuit 703 is interrupted even if one of the two relays 103, 105 malfunctions, such as a jamming armature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Relay Circuits (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

L'invention concerne un module relais (100) électromagnétique comportant une première branche (119), qui présente un premier condensateur (115) et un premier relais (103) monté en série avec le premier condensateur (115), une seconde branche de circuit (121), qui présente un second condensateur (117) et un second relais (105) monté en série avec le second condensateur (117), un élément de commutation (125), qui est monté entre la première branche de circuit (119) et la seconde branche de circuit (121) et présente un premier état de commutation et un second état de commutation. Dans un premier état de commutation de l'élément de commutation (125), la première branche de circuit (119) et la seconde branche de circuit (121) sont agencés en montage parallèle. Dans un second état de commutation de l'élément de commutation (125), le premier relais (103) et le second relais (105) sont agencés en montage en série. L'élément de commutation (125) est conçu de sorte à passer du premier état de commutation au second état de commutation lors de la mise en marche du module relais (100), de manière à augmenter la résistance totale du module relais (100).
EP19758413.9A 2018-09-12 2019-08-26 Module relais Withdrawn EP3850652A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE20185624A BE1026605B1 (de) 2018-09-12 2018-09-12 Relaismodul
PCT/EP2019/072694 WO2020052947A1 (fr) 2018-09-12 2019-08-26 Module relais

Publications (1)

Publication Number Publication Date
EP3850652A1 true EP3850652A1 (fr) 2021-07-21

Family

ID=63762142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19758413.9A Withdrawn EP3850652A1 (fr) 2018-09-12 2019-08-26 Module relais

Country Status (5)

Country Link
US (1) US20210313131A1 (fr)
EP (1) EP3850652A1 (fr)
JP (1) JP7185768B2 (fr)
BE (1) BE1026605B1 (fr)
WO (1) WO2020052947A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118352965B (zh) * 2024-06-18 2024-08-30 浙江卡巴尔电气有限公司 一种急停保护电路和控制系统

Citations (2)

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Publication number Priority date Publication date Assignee Title
US3707654A (en) * 1971-05-26 1972-12-26 Allis Chalmers Mfg Co Series-parallel electrical circuit
GB2480239A (en) * 2010-05-10 2011-11-16 Michael Vaughan Cadwallader Automatic parallel to serial circuit reconfiguration

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Publication number Priority date Publication date Assignee Title
DE1487940A1 (de) * 1951-01-28 1969-01-16 Siemens Ag Schaltungsanordnung fuer Fernmelde-,insbesondere Fernsprechanlagen zur wahlweisen Betaetigung von Schaltmitteln
DE1815749B2 (de) * 1968-12-16 1971-08-15 Schaltungsanordnung zur abfallverzoegerung und strombe grenzung eines relais
DE19619599C2 (de) * 1996-05-15 1998-05-28 Elan Schaltelemente Gmbh Auf eine abfallende Spannungsflanke ansprechende Schaltungsanordnung
US7839105B2 (en) 2006-09-26 2010-11-23 Tai-Her Yang Circuit installation capable of full voltage activation, division voltage operation and delayed breaking
DE102011054968A1 (de) * 2011-10-31 2013-05-02 Phoenix Contact Gmbh & Co. Kg Sicherheitsgerichtetes Schaltgerät
JP2016157524A (ja) 2015-02-23 2016-09-01 ニチコン株式会社 リレー駆動回路
FR3055465B1 (fr) * 2016-08-23 2019-11-22 Schneider Electric Industries Sas Declencheur commandable pour un disjoncteur electrique

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707654A (en) * 1971-05-26 1972-12-26 Allis Chalmers Mfg Co Series-parallel electrical circuit
GB2480239A (en) * 2010-05-10 2011-11-16 Michael Vaughan Cadwallader Automatic parallel to serial circuit reconfiguration

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2020052947A1 *

Also Published As

Publication number Publication date
JP2022500826A (ja) 2022-01-04
BE1026605A1 (de) 2020-04-03
WO2020052947A1 (fr) 2020-03-19
JP7185768B2 (ja) 2022-12-07
US20210313131A1 (en) 2021-10-07
BE1026605B1 (de) 2020-04-09

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