EP0901057A2 - Schaltungsvorrichtung zur Stromregelung - Google Patents
Schaltungsvorrichtung zur Stromregelung Download PDFInfo
- Publication number
- EP0901057A2 EP0901057A2 EP98114690A EP98114690A EP0901057A2 EP 0901057 A2 EP0901057 A2 EP 0901057A2 EP 98114690 A EP98114690 A EP 98114690A EP 98114690 A EP98114690 A EP 98114690A EP 0901057 A2 EP0901057 A2 EP 0901057A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- measuring
- arrangement
- current
- circuit device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H01F7/1844—Monitoring or fail-safe circuits
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
Definitions
- the present invention relates to a circuit device to control one by a solenoid arrangement flowing coil current, with a control device, which has a measuring arrangement for measuring the coil current and which the coil current depending on the measured Regulates coil current, with means for generation one flowing through the magnet coil arrangement Starting current and with a switching device for lowering of the coil current after a tightening period has elapsed to a lower one until the end of a switching signal flowing, clocked holding current.
- the object of the present invention is therefore a To create circuit device of the type mentioned, which generates a much lower power loss and at the same time of a largely arbitrary voltage can be supplied.
- This object is achieved in that also the starting current is regulated by clocking and that the measuring arrangement is switched outside the freewheeling circuit is in the during the present in the clock breaks Free running state of the magnet coil arrangement of the Freewheeling current flows.
- a rectifier arrangement is expediently provided, the one input voltage in one for power supply the supply DC voltage serving the device reshaped. In this way, the circuit device to a DC or AC voltage as the input voltage be created.
- the supply voltage of the supply voltage corresponds to the magnet coil arrangement.
- the supply voltage is accordingly clocked Voltage or current source fed the control device, so that no additional input voltage for supply the control device is necessary.
- Fig. 1 shows an embodiment of the circuit device 1.
- the circuit device 1 has two input terminals 2, 3, to the outside of an input voltage UO can be created.
- the input terminals 2, 3 are with a Rectifier assembly 6 connected, the example of a diode bridge circuit 7 is formed.
- the rectifier arrangement formed by the diode bridge circuit 7 the input voltage UO becomes a DC supply voltage UG reshaped.
- the positive pole of the DC supply voltage UG is at a positive output 8 of the Rectifier arrangement 6, the one with a supply line 9 is connected, and a negative output 10 of Rectifier arrangement 6, on which the negative pole of the DC supply voltage is present, is at ground potential GND placed (0 volt). Between the supply line 9 and Ground potential GND is the DC supply voltage UG on.
- the circuit device 1 also has a Magnetic coil arrangement 14, on the one hand with the supply line 9 is connected and on the other hand via a Series connection from a light emitting diode 13, the switching path between input E and output A of a controlled Switch 15 and a measuring resistor 16 connected to ground GND is.
- the magnet coil arrangement is 14 formed by a single magnetic coil, whose equivalent circuit from a series connection of a ideal coil 22 and an ohmic coil resistor 23 is formed.
- a free-wheeling diode 17 is connected, the cathode of which the supply line 9 is connected and its anode thus in connection with the input E of the controlled Switch 15 is.
- the solenoid assembly 14, the LED 13 and the freewheeling diode 17 form together a free-wheeling circuit 18.
- the light emitting diode 13 is optional and not for the function of the circuit device 1 is needed. You can also by other display elements be replaced or supplemented, if this is desirable should be.
- the light-emitting diode 13 is used by one Magnetic coil arrangement 14 flowing coil current IS optically display. As soon as a coil current IS flows, the lights up LED 13 (status display).
- control line 19th connected to a control output AS of a control unit 20.
- the control line 19 further connects the Control output AS of the control unit 20 with another Control input S of a controlled measuring switch 21, whose switching distance between an input E and a Output A is turned on in a measuring line 24, which the Connection side of the measuring resistor facing away from GND 16 connects to a measurement input M of the control unit 20.
- the measuring switch 21 When the measuring switch 21 is turned on, the Measuring resistor 16 falling measuring voltage UM at the measuring input M the control unit 20.
- the controlled switch 15 and the controlled measuring switch 21 can, for example, as a semiconductor switch and here in particular be designed as MOS-FETs. Of course could also semiconductor types other than controlled switches are used.
- the control unit 20 also has a switch input UE, which is connected to a switching device 25 is.
- the control unit 20, the controlled switch 15, the controlled measuring switch 21, the measuring resistor 16 and the Switching device 25 together form a control device 26.
- a clocked voltage source 29 is provided, for example, which has a regulator supply voltage at its output UR memorizes the present Embodiment with the control unit 20 and Switching device 25 is connected to its supply.
- the clocked voltage source 29 is fed by the DC supply voltage UG.
- a clocked one Power source are provided.
- circuit device 1 The function of the circuit device 1 is as follows explained in detail with reference to FIGS. 2a-c.
- the magnet coil arrangement 14 can, for example, be of a Solenoid coil of a solenoid valve can be formed, with the Tightening the valve spool first a high tightening current IA is required, which is then used to hold the tightened state in a lower holding current IH can be lowered. Accordingly, flows first through the Solenoid assembly 14 during a tightening period TA the starting current IA which, after the starting time TA is lowered into the holding current IH.
- controlled switch 15 and the Controlled measuring switch 21 via separate control outputs to control the control unit 20.
- An evaluation device of the control unit 20 compares now the measured value of the measuring voltage UM with a internal reference voltage, the controlled switch 15 opened or dependent on the comparison result is closed again.
- the Measuring switch 21 When switch 15 is open, there is no contact on measuring resistor 16 valid measurement signal, since this is de-energized, although in Free-wheeling circuit 18 from the magnet coil arrangement 14 induced freewheeling current flows. For this reason, the Measuring switch 21 also opened, so that at the measuring input M the control unit 20 has no signal.
- the measuring switch 21 has one so-called sample-and-hold element formed measurement value storage means, that supplied to the measurement input M of the control unit 20 Hold the voltage value until the measuring switches 21 and so that the controlled switch 15 is closed again are and the next valid measured value is pending and thus the Measuring input M of control unit 20 from measuring switch 21 constantly receives a valid measured value. It goes without saying that the measured value storage means alternatively in the Control unit 20 could be registered.
- the internal reference voltage of the control unit 20 could for example, have a triangular shape and with the differential voltage from the nominal value of the measuring voltage UM minus the actual value of the measuring voltage UM can be compared. At each "intersection" from the differential voltage and the The controlled switch 15 becomes the reference voltage switched. If the differential voltage is greater than that Reference voltage, so the controlled switch 15th otherwise it is closed.
- This The principle is known from DE-29 60 0866. Basically could be any other regulatory process here be used.
- the switching device causes 25 at the changeover input UE of the control unit 20 a switching signal, whereby the coil current IS from its starting current value to that corresponding to the holding current IH Value is reduced.
- the regulation of the holding current IH takes place analogously to that of the starting current IA by clocking with the difference that the setpoint of Measuring voltage UM at measuring resistor 16 is correspondingly lower is.
- the holding current IH flows through the for so long Solenoid assembly 14 until the DC supply voltage UG by switching off the input voltage UO is also switched off and a falling edge 33 having.
- the coil current IS is then reduced in an e-function-like manner up to zero.
- the input voltage UO or the supply DC voltage UG thus represent is a switching signal that occurs when the input voltage is switched on UO or the supply voltage UG den Start of the tightening phase and when switching off the input voltage UO or the DC supply voltage UG the end the holding phase. Switching off the input voltage UO and thus the DC supply voltage UG during the suit period doesn't make sense because then the valve slide is not tightened securely can.
- the tightening period TA is preferred chosen so long that the solenoid arrangement 14 the associated valve spool securely can switch.
- Due to the rectifier arrangement 6 can be used as input voltage UO DC or AC voltages are used become.
- the size of the input voltage UO is so too choose at least that during the suit period through the magnet coil arrangement 14 flowing current IA guaranteed. Larger input voltages UO than that required minimum values are in the case of the invention Circuit device 1 is also possible, since both pulling current IA and holding current IH are reduced by clocking can be.
- the input voltage UO in the range of 24 V to 230 V DC or AC voltage.
- the clocked voltage source 29 is also from the DC supply voltage UG supplies and delivers at your Output the clocked, regulated regulator supply voltage UR, so that also for the control device 26 no separate external power supply required is.
- the necessary to supply the control device 26 Regulator supply voltage UR is by means of clocked voltage source 29 and the rectifier arrangement 6 obtained from the input voltage UO.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Relay Circuits (AREA)
- Measurement Of Current Or Voltage (AREA)
- Control Of Voltage And Current In General (AREA)
- Seal Device For Vehicle (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Vehicle Body Suspensions (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Description
- Fig. 1
- ein Ausführungsbeispiel einer Schaltungsvorrichtung,
- Fig. 2a
- einen beispielhaft gewählten Spannungsverlauf der Eingangsspannung in Abhängigkeit von der Zeit,
- Fig. 2b
- den Verlauf des getakteten Spulenstromes in Abhängigkeit von der Zeit und
- Fig. 2c
- den Verlauf der getakteten Spulenspannung in Abhängigkeit von der Zeit.
Claims (13)
- Schaltungsvorrichtung zur Regelung eines durch eine Magnetspulenanordnung (14) fließenden Spulenstromes (IS), mit einer Regeleinrichtung (26), die eine Meßanordnung (16, 21) zum Messen des Spulenstromes (IS) aufweist und die den Spulenstrom (IS) in Abhängigkeit von der gemessenen Spulenstromstärke regelt, mit Mitteln zur Erzeugung eines durch die Magnetspulenanordnung (14) fließenden Anzugsstromes (IA) und mit einer Umschalteinrichtung (25) zur Absenkung des Spulenstromes (IS) nach Ablauf einer Anzugszeitdauer (TA) auf einen geringeren, bis zum Ende eines Schaltsignales (UG bzw. UO) fließenden, getakteten Haltestrom (IH), dadurch gekennzeichnet, daß auch der Anzugsstrom (IA) durch Taktung geregelt ist und daß die Meßanordnung (16, 21) außerhalb des Freilaufstromkreises (18) geschaltet ist, in dem während des in den Taktpausen vorliegenden Freilaufzustands der Magnetspulenanordnung (14) der Freilaufstrom fließt.
- Schaltungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Regeleinrichtung (26) einen insbesondere als Halbleiterschalter ausgebildeten gesteuerten Schalter (15) aufweist, dessen Schaltstrecke in Reihe mit der Magnetspulenanordnung (14) geschaltet ist, so daß der Spulenstrom (IS) mittels des Schalters (15) ein- und abschaltbar ist.
- Schaltungsvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Schaltstrecke des gesteuerten Schalters (15) den Freilaufstromkreis (18) und die Meßanordnung (16, 21) verbindet.
- Schaltungsvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Freilaufstromkreis (18) zumindest aus der Magnetspulenanordnung (14) und einer Freilaufdiode (17) besteht.
- Schaltungsvorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß eine Leuchtdiode (13) oder andere Anzeigeelemente in den Freilaufstromkreis (18) eingeschaltet sind.
- Schaltungsvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Meßanordnung (16, 21) einen Meßwiderstand (16) aufweist, der in Reihe zur Magnetspulenanordnung (14) schaltbar ist, so daß außerhalb der Taktpausen der Spulenstrom (IS) zumindest im wesentlichen durch den Meßwiderstand (16) fließt.
- Schaltungsvorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die am Meßwiderstand (16) abfallende Meßspannung (UM) über eine Meßleitung (24) einer Auswerteeinrichtung zugeführt wird, wobei ein insbesondere als Halbleiterschalteranordnung ausgebildeter Schalter (21) in die Meßleitung (24) eingeschaltet ist, so daß die Auswerteeinrichtung von der Meßspannung (UM) abtrennbar ist.
- Schaltungsvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß eine Gleichrichteranordnung (6) vorgesehen ist, die eine Eingangsspannung (UO) in eine zur Spannungsversorgung der Magnetspulenanordnung (14) dienende Versorgungsgleichspannung (UG) umformt.
- Schaltungsvorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Gleichrichteranordnung (6) eine Diodenbrückenschaltung (7) enthält.
- Schaltungsvorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß zur Spannungs- bzw. Stromversorgung der Regeleinrichtung (26) eine getaktete Spannungsquelle (29) bzw. Stromquelle vorhanden ist, die über die Versorgungsspannung (UG) der Magnetspulenanordnung (14) gespeist wird.
- Schaltungsvorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Magnetspulenanordnung (14) von einer einzigen Magnetspule gebildet ist.
- Schaltungsvorrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Regeleinrichtung (26) über Meßwertspeichermittel zum Speichern des zuletzt gemessenen Meßwerts verfügt.
- Schaltungsvorrichtung nach Anspruch 12, dadurch gekennzeichnet, daß die Meßwertspeichermittel von einem sample-and-hold-Glied gebildet sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29715925U DE29715925U1 (de) | 1997-09-05 | 1997-09-05 | Schaltungsvorrichtung |
DE29715925U | 1997-09-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0901057A2 true EP0901057A2 (de) | 1999-03-10 |
EP0901057A3 EP0901057A3 (de) | 1999-05-12 |
EP0901057B1 EP0901057B1 (de) | 2003-02-26 |
Family
ID=8045562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98114690A Revoked EP0901057B1 (de) | 1997-09-05 | 1998-08-05 | Schaltungsvorrichtung zur Stromregelung |
Country Status (3)
Country | Link |
---|---|
US (1) | US6262874B1 (de) |
EP (1) | EP0901057B1 (de) |
DE (2) | DE29715925U1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004058159A1 (de) * | 2004-12-02 | 2006-06-22 | Bosch Rexroth Ag | Verfahren zum Betrieb einer Ansteuerschaltung zur Betätigung eines Ventils, sowie Ansteuerschaltung selbst |
CN101404199B (zh) * | 2008-07-01 | 2011-10-19 | 常熟开关制造有限公司(原常熟开关厂) | 电磁铁控制装置 |
DE102015101778A1 (de) | 2015-02-08 | 2016-08-11 | Heinz Gödert | Schaltungsanordnung zur Betätigung eines Magnetventils durch getaktete Ansteuerung |
CN105955393A (zh) * | 2016-06-21 | 2016-09-21 | 贵州振华群英电器有限公司(国营第八九厂) | 一种小型差分式高压输出型继电器控制盒 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001521312A (ja) | 1997-10-17 | 2001-11-06 | コンチネンタル・テベス・アーゲー・ウント・コンパニー・オーハーゲー | バッテリー供給ラインにおける電圧サグを減少するための方法および回路配置 |
CA2453553A1 (en) * | 2001-07-12 | 2003-01-23 | Mecel Aktiebolag | Method for solenoid control |
JP3851140B2 (ja) * | 2001-10-30 | 2006-11-29 | ボッシュ株式会社 | 流量制御用電磁比例制御弁の駆動方法 |
DE10302988B3 (de) * | 2003-01-25 | 2004-10-28 | Festo Ag & Co. | Schaltungsvorrichtung zur Erzeugung eines durch eine Magnetspulenanordnung fließenden, durch Taktung geregelten Spulenstroms |
DE102006020561B3 (de) * | 2006-05-03 | 2007-11-29 | Infineon Technologies Ag | Spannungsversorgungsschaltung und Verfahren zum Versorgen einer Schaltung mit einer Versorgungsspannung |
JP4431996B2 (ja) * | 2007-07-09 | 2010-03-17 | Smc株式会社 | 電磁弁駆動回路及び電磁弁 |
JP4359855B2 (ja) | 2007-07-09 | 2009-11-11 | Smc株式会社 | 電磁弁駆動回路及び電磁弁 |
US20100259861A1 (en) * | 2009-04-10 | 2010-10-14 | Pertech Resources, Inc. | Solenoid drive method that conserves power |
US8687341B2 (en) * | 2010-02-10 | 2014-04-01 | Hanchett Entry Systems, Inc. | Control circuit for electric unlocking devices using actuating solenoids |
CN102493886B (zh) * | 2011-11-30 | 2014-04-30 | 潍柴动力股份有限公司 | 一种喷油器开启时间修正方法及装置 |
JP6056804B2 (ja) * | 2014-04-18 | 2017-01-11 | 株式会社デンソー | 電磁弁制御装置 |
US9911561B2 (en) * | 2015-11-13 | 2018-03-06 | Target Rock Division Of Curtiss-Wright Flow Control Corporation | Solenoid current control with fault detection, override, and shutdown features |
CN107924787B (zh) | 2016-03-16 | 2019-06-18 | 富士电机机器制御株式会社 | 电磁接触器的操作线圈驱动装置 |
JP6504311B2 (ja) * | 2016-03-17 | 2019-04-24 | 富士電機機器制御株式会社 | 電磁接触器の操作コイル駆動装置 |
Citations (5)
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US4492913A (en) * | 1981-09-10 | 1985-01-08 | Robert Bosch Gmbh | Current regulating circuit for an electric consumer |
DE3927972A1 (de) * | 1989-08-24 | 1991-02-28 | Helmut Prof Dipl Ing Hoenicke | Chopperstabilisierte und pulsbreitenmodulierte elektronikansteuerung von elektromagneten fuer elektro-hydraulische proportionalventile |
EP0417873A1 (de) * | 1989-09-14 | 1991-03-20 | Siemens Aktiengesellschaft | Schaltungsanordnung zur Überwachung einer Stromversorgungseinrichtung auf Spannungsunterschreitung |
DE4113433A1 (de) * | 1990-04-30 | 1992-01-09 | Sihn Jr Kg Wilhelm | Geregeltes netzteil, insbesondere fuer ein tragbares antennenmessgeraet |
US5311548A (en) * | 1991-03-21 | 1994-05-10 | Mannesmann Rexroth Gmbh | Digital control electronic having a pulse width modulated (PWM)-output signal for the control of electric control elements of a hydraulic system |
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GB8402470D0 (en) * | 1984-01-31 | 1984-03-07 | Lucas Ind Plc | Drive circuits |
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DE3910810A1 (de) * | 1989-04-04 | 1990-10-11 | Luetze Gmbh Co F | Schaltungsanordnung fuer ein elektromagnetisches ventil |
US5053911A (en) * | 1989-06-02 | 1991-10-01 | Motorola, Inc. | Solenoid closure detection |
DE4006838A1 (de) * | 1990-03-05 | 1991-09-12 | Metz Albert Blumberger Tel | Verfahren und anordnung zum schalten eines elektromechanischen relais |
DE4420282A1 (de) * | 1994-06-10 | 1995-12-14 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers |
JP3085132B2 (ja) * | 1995-03-02 | 2000-09-04 | 本田技研工業株式会社 | パルス幅変調ソレノイドの制御装置 |
JP3026278B2 (ja) * | 1995-03-02 | 2000-03-27 | 本田技研工業株式会社 | パルス幅変調ソレノイドの制御装置 |
-
1997
- 1997-09-05 DE DE29715925U patent/DE29715925U1/de not_active Expired - Lifetime
-
1998
- 1998-08-05 DE DE59807292T patent/DE59807292D1/de not_active Revoked
- 1998-08-05 EP EP98114690A patent/EP0901057B1/de not_active Revoked
- 1998-09-04 US US09/148,303 patent/US6262874B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4492913A (en) * | 1981-09-10 | 1985-01-08 | Robert Bosch Gmbh | Current regulating circuit for an electric consumer |
DE3927972A1 (de) * | 1989-08-24 | 1991-02-28 | Helmut Prof Dipl Ing Hoenicke | Chopperstabilisierte und pulsbreitenmodulierte elektronikansteuerung von elektromagneten fuer elektro-hydraulische proportionalventile |
EP0417873A1 (de) * | 1989-09-14 | 1991-03-20 | Siemens Aktiengesellschaft | Schaltungsanordnung zur Überwachung einer Stromversorgungseinrichtung auf Spannungsunterschreitung |
DE4113433A1 (de) * | 1990-04-30 | 1992-01-09 | Sihn Jr Kg Wilhelm | Geregeltes netzteil, insbesondere fuer ein tragbares antennenmessgeraet |
US5311548A (en) * | 1991-03-21 | 1994-05-10 | Mannesmann Rexroth Gmbh | Digital control electronic having a pulse width modulated (PWM)-output signal for the control of electric control elements of a hydraulic system |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004058159A1 (de) * | 2004-12-02 | 2006-06-22 | Bosch Rexroth Ag | Verfahren zum Betrieb einer Ansteuerschaltung zur Betätigung eines Ventils, sowie Ansteuerschaltung selbst |
DE102004058159B4 (de) * | 2004-12-02 | 2014-02-13 | Bosch Rexroth Ag | Schaltungsanordnung zur Betätigung eines Ventils |
CN101404199B (zh) * | 2008-07-01 | 2011-10-19 | 常熟开关制造有限公司(原常熟开关厂) | 电磁铁控制装置 |
DE102015101778A1 (de) | 2015-02-08 | 2016-08-11 | Heinz Gödert | Schaltungsanordnung zur Betätigung eines Magnetventils durch getaktete Ansteuerung |
CN105955393A (zh) * | 2016-06-21 | 2016-09-21 | 贵州振华群英电器有限公司(国营第八九厂) | 一种小型差分式高压输出型继电器控制盒 |
CN105955393B (zh) * | 2016-06-21 | 2017-10-27 | 贵州振华群英电器有限公司(国营第八九一厂) | 一种小型差分式高压输出型继电器控制盒 |
Also Published As
Publication number | Publication date |
---|---|
US6262874B1 (en) | 2001-07-17 |
DE59807292D1 (de) | 2003-04-03 |
DE29715925U1 (de) | 1997-10-23 |
EP0901057B1 (de) | 2003-02-26 |
EP0901057A3 (de) | 1999-05-12 |
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