EP3481143A1 - Système de chauffage permettant le fonctionnement d'un élément chauffant - Google Patents

Système de chauffage permettant le fonctionnement d'un élément chauffant Download PDF

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Publication number
EP3481143A1
EP3481143A1 EP17200251.1A EP17200251A EP3481143A1 EP 3481143 A1 EP3481143 A1 EP 3481143A1 EP 17200251 A EP17200251 A EP 17200251A EP 3481143 A1 EP3481143 A1 EP 3481143A1
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EP
European Patent Office
Prior art keywords
switching elements
potential
control
drive signal
separation 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
Application number
EP17200251.1A
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German (de)
English (en)
Other versions
EP3481143B1 (fr
Inventor
Christoph Spitthöver
Torsten Lang
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.)
Vorwerk and Co Interholding GmbH
Original Assignee
Vorwerk and Co Interholding GmbH
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Application filed by Vorwerk and Co Interholding GmbH filed Critical Vorwerk and Co Interholding GmbH
Priority to EP17200251.1A priority Critical patent/EP3481143B1/fr
Publication of EP3481143A1 publication Critical patent/EP3481143A1/fr
Application granted granted Critical
Publication of EP3481143B1 publication Critical patent/EP3481143B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0258—For cooking
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07—Heating plates with temperature control means

Definitions

  • the present invention relates to a heating system for operating a heating element. Furthermore, the invention relates to a method for operating a heating element and a food processor with a heating system.
  • Heating systems can be used in electrical appliances for various applications, such as in a food processor for heating a medium in a mixing vessel.
  • the heating system carries out a control of a heater, for example in the mixing vessel of the food processor, in such a way that the medium to be heated is heated to preselectable nominal values.
  • the media temperature which is calculated, for example, by algorithms and based on the detection of a temperature sensor.
  • a heating element for reasons of safety and life with alternating current flows through.
  • such heating systems can, for example, be operated with a triac control only with large switching intervals.
  • the necessity of reducing flicker noise has a limiting effect.
  • the control deviation should be reduced, so that a nearly constant heating power can be achieved.
  • Another object may be a reduction of the power loss during operation of the heating element, in particular a thick-film heating of a food processor.
  • an electrical connection both a direct and an indirect connection, ie also understood by other electrical components, but in particular only if the connection in the same circuit or exclusively electrically (ie without galvanic isolation).
  • the input terminals can be electrically connected directly and are therefore at a common electrical potential, which can preferably be used as a reference potential of the gate-source voltage.
  • the common reference potential can thus be a common (and therefore the same) electrical potential of the input terminals (source terminals) of the switching elements.
  • the load and control circuit relates to separate switching arrangements, which may optionally be electrically connected to one another and / or may also have separate current paths and / or circuits.
  • a switching frequency of the switching elements for triggering (ie also regulating) the heating element is used greater than 1 kHz or greater than 2 kHz or greater than 5 kHz or greater than 10 kHz or greater than 20 kHz.
  • a power of at least 0.5 kW or at least 1 kW can be switched by the switching elements.
  • the switching elements are designed as (for example N-channel) MOSFETs (ie metal-oxide-semiconductor field-effect transistor), which, for example, a high turn-on speed (slew rate) and / or a low capacitance at the gate Terminal so as to reduce the circuit losses.
  • the MOSFETs may have low on-resistance electrical resistance between the drain and source terminals to reduce the on-state losses.
  • the voltage at the control connection or gate connection may be or stand in relation to the voltage at the input connection or source connection (due to the changing potential at the switching elements).
  • the voltage difference between the input and control terminal in the switched and in the off state of the switching element must be kept constant, and thus in particular be independent of the voltage between the output terminals of the switching elements.
  • This voltage between the output terminals varies, for example, in operation between + 330 V and - 330 V. For example.
  • control terminals of the switching elements electrically independent of a mains voltage of the heating system can be controlled, in particular so that the drive circuit can be controlled by a control circuit and / or a control device, which / which at the same (or alternatively to another) ground potential can lie like the load circuit.
  • the control of the switching elements can be potential-free.
  • a high-frequency control of the heating element by the switching elements can offer the possibility to reduce the control deviation of the heating control and thus set a nearly constant heat output.
  • the input terminals of the switching elements may be directly electrically connected to each other and / or a second ground potential and thus at a common electrical potential (the common reference potential).
  • this common potential as the common reference potential for the drive signal, d. H.
  • to form a gate-source voltage or as a reference point for a potential at the control terminal serve.
  • the drive signal is generated as a potential difference, in particular is generated floating, preferably so that a control voltage between the control terminals and the input terminals (i.e., in particular a gate-source voltage for the switching elements) remains at least almost constant.
  • the control voltage or gate-source voltage can have the same height for both control elements, and, for example, have a different height in the switched-on state of the control elements than in the switched-off state of the switching elements, but are preferably kept at least almost constant in both cases.
  • the controls always have the same state in normal operation for heating control, so that the alternating current can always be locked for both current directions.
  • the heating element can be operated with an electrical power in the range from 200 W to 5 kW, in particular 500 W to 3 kW, preferably 800 W to 2 kW, preferably 1 kW to 1.5 kW, and / or the switching elements in each case be designed to switch an electric power in these areas.
  • the power supply of the heating element is effected in particular by an electrical voltage, in particular a (possibly high-frequency) AC voltage, preferably a mains voltage, in a range of 100 V to 400 V, preferably 200 V to 300 V, preferably 230 V to 250 V.
  • Preferred the switching elements in opposite directions (antiserial) connected to block both the positive and the negative half wave of the voltage to the power supply (mains voltage) in the off state of the switching elements.
  • lock refers in particular to a state in which the current flow to the heating element is predominantly or completely blocked by the switching elements.
  • the switching elements are connected in series with the heating element and integrated into the load circuit (load circuit).
  • the drive circuit (drive circuit) and the load circuit are formed separately from each other, so that in particular a flow of current from the heating element to the drive circuit or of one of the switching elements is prevented from the drive circuit.
  • the different orientation of the switching elements with respect to the current direction is therefore particularly useful to block each current direction through the switching elements (from and to the heating element).
  • a single switching element which can be embodied, for example, as a MOSFET, block only one current direction.
  • This is related to the structure of the switching elements, which can cause a behavior of the switching elements, which is similar to a parallel connection of a diode in the respective switching elements.
  • This property of the structure is hereinafter also referred to as a parasitic diode, and may, for. B. between a substrate of a switching element and an output terminal (drain terminal) of this switching element form.
  • the carrier material (bulk) is directly connected to an input terminal (source terminal) of the switching element, so that the current flow can be prevented only in one direction. For example. (at a positive voltage), a current flow from source to drain is possible (whereas the current flow is blocked from drain to source in the off state and released in the on state of the switching element).
  • a drive voltage of the switching elements is always in relation to the input terminal of a respective switching element.
  • a voltage between the input terminal (source) and the control terminal (gate) for the on state and / or the off state is kept at least almost constant and thus at least substantially independent of a voltage between the output terminals the switching elements is.
  • the voltage between the output terminals varies, for example, between +330 V and - 330 V. (in heating mode).
  • an average switching frequency of the switching elements which is used in a heating operation for controlling a heating power of the heating element, at least 500 Hz or at least 1 kHz or at least 2kHz. This has the advantage that a control deviation of the heating control can be significantly reduced by the high-frequency control.
  • the load circuit and the control circuit are electrically connected to different masses (in particular, this means that the load circuit is connected to a first ground, and the drive circuit is connected to a second ground, with which the load circuit is not directly or galvanically connected), wherein preferably a first ground potential (first Ground) is connected to the load circuit, and a second ground potential (second ground) is connected to the drive circuit, preferably electrically connected to the input terminals of the switching elements and / or the potential separation device, and particularly preferably forms the common reference potential.
  • the switching elements in particular the respective control terminals
  • the potential-free control makes it possible for the control circuit (ie the control circuit for the switching elements) to be operated in particular with the same ground potential after a potential separation with the same supply voltage (for example the food processor, in particular mains voltage) as the load circuit with the switching elements.
  • a further power supply can be provided for the drive circuit, for example an AC / DC converter for electrical isolation, in order to supply power to the drive circuit.
  • the further energy supply for example, can provide a further ground (second ground potential) which differs from the ground of the load circuit (first ground potential) and is provided in particular for the drive circuit.
  • the drive signal is preferably designed as a voltage between the control connection (gate) and the input connection (source), ie a gate-source voltage or as an (electrical) potential of the control connection (gate potential).
  • the potential separation device ie the potential-free control of the switching elements
  • the drive signal is kept at least almost constant in each case at a first level (for the switched-on state of the switching elements) and / or at a second level (for the switched-off state of the switching elements).
  • the switching between the first and the second level can take place in that the potential separation device is controlled by a control device, for example. By different voltages on the input side of the potential separation device.
  • the switching elements are each designed as a transistor, preferably as a field effect transistor, preferably as a MOSFET, so preferably by switching the respective switching elements based on the drive signal, a current flow between the input terminal and an output terminal of the respective switching element in each one Direction is influenced, preferably for this purpose the control terminal of the respective switching elements is electrically connected to the potential separation device.
  • switching elements in particular MOSFETs, have a high turn-on speed (slew rate) and a low capacitance at the gate terminal, so that the switching losses can be significantly reduced.
  • the switching elements are designed as N-channel MOSFETs.
  • an electrical connection of the control connections with the potential separation device can also be implemented indirectly via further components.
  • the potential separation device comprises a first terminal which is electrically (eg indirectly, possibly via at least one control element, such as a transistor) connected to the control terminals of the switching elements, and a second terminal which electrically ( in particular directly and / or via a second ground) is connected to the input terminals of the switching elements, preferably to generate a potential difference between the first and second terminals for the drive signal.
  • a first terminal which is electrically (eg indirectly, possibly via at least one control element, such as a transistor) connected to the control terminals of the switching elements
  • a second terminal which electrically ( in particular directly and / or via a second ground) is connected to the input terminals of the switching elements, preferably to generate a potential difference between the first and second terminals for the drive signal.
  • the switching elements may optionally be possible for the switching elements to be integrated into the load circuit in such a way that they have a different current blocking direction in the load circuit, in particular by a correspondingly different orientation of the switching elements or a parasitic diode (between a carrier material and an output terminal ) of the switching elements, so that preferably different half-waves of a supply voltage of the load circuit can be blocked. This can reliably control an alternating voltage for operating the heating element.
  • a control device for heating control, preferably to perform an electrical activation of the potential separation device for generating the drive signal, so preferably the switching elements are driven by high frequency by the drive signal, in particular with a switching frequency (in the high frequency range) via 2 kHz or over 10 kHz or over 20 kHz.
  • the control device in the load or a control circuit
  • the first ground may differ from a second ground to which the drive circuit is connected, the potential separation device preferably carrying out the potential separation between load (or control circuit) and drive circuit, and / or galvanically connecting a potential of the load circuit or control circuit to one Potential of the control circuit separates.
  • the load circuit comprises the heating element or is electrically (detachably) connectable to the heating element, wherein the heating element is preferably designed as thick film heating, and is preferably integrated in a mixing vessel of a food processor and / or can be integrated ,
  • the heating element may be part of the heating system according to the invention or may be designed separately therefrom.
  • the load circuit can be designed as an open circuit, which is closed by the connection to the heating element.
  • the heating system and heating element can be detachably connected to one another.
  • the heating element may be connected to (electrical) connecting elements which enable a detachable (electrical) connection to (electrical) counter-connecting elements of the heating system.
  • the heating element can be integrated in a mixing vessel of a food processor, wherein the mixing vessel, for example, releasably in the food processor attachable and / or designed to be integrated.
  • the heating system can be integrated in a stationary part of the food processor, which, for example, can accommodate the mixing vessel. This allows flexible handling of the heating element and the food processor.
  • the load circuit comprises a voltage source, in particular an AC voltage source, for providing the alternating current of the load circuit, which preferably via the switching elements electrically (serially) with is connected to the heating element and / or is connectable, in particular to transmit an electrical power to the heating element, so that the power transmission controllable by the switching elements in response to the control signal, in particular switchable, is.
  • a voltage source in particular an AC voltage source
  • the potential separation device is electrically connected to the switching elements in such a way that an at least almost constant voltage between the respective control connection, in particular a gate connection, and the respective input connection, in particular by the potential separation device upon provision of a drive signal a source terminal, is generated, preferably at least almost independent of a polarity of the alternating current and / or a voltage between output terminals of the switching elements in normal operation. This can ensure that even with the negative half-wave, the heating power is switched reliably.
  • the drive circuit may optionally comprise an energy transmitter, preferably a separate energy source and / or a switching power supply and / or an AC / DC converter (ie rectifier), in order to preferably provide the power supply of the drive circuit, and preferably the potential separation device for generating to energize the drive signal.
  • the energy transmitter can be connected to a first ground, with which the load circuit is also connected.
  • the energy transmitter can provide a different second mass for the control circuit, in particular by performing a potential separation. This has the advantage that the control of the switching elements can be done very reliable.
  • AC / DC converters sometimes referred to as AC / DC converters
  • rectifiers that convert alternating current into direct current.
  • the potential separation device is designed as an optocoupler.
  • This includes, for example, a transmitter, such as a light-emitting diode, and / or a receiver, such as a photodiode. This has the advantage that reliably a drive signal can be generated floating.
  • the potential separation device comprises a first separation unit, in particular a first winding in the drive circuit and a second separation unit, in particular a second winding in the load circuit, preferably by the second separation unit, in particular second winding in that a potential difference as a function of a voltage signal at the first separation unit, preferably the first winding, can be generated for the activation signal.
  • the input terminals prefferably be at a common source potential, and preferably to be connected to the control terminals via the potential isolation device, in particular so that switching off of the switching elements can be effected by the activation signal in order to produce a negative as well as a positive one Half-wave of a power supply in the load circuit to block the flow of current. This enables reliable operation of the heating element.
  • the invention also generally includes a household appliance, such.
  • a household appliance such as a food processor, with the heating system according to the invention for operating a heating element.
  • the inventive method brings the same advantages as have been described in detail with respect to a heating system according to the invention.
  • the method may be suitable for operating a heating system according to the invention.
  • the potential separation device can be electrically connected on the input side to a control circuit and / or load circuit, and in particular to a control device, and on the output side to the control circuit, and in particular to the switching elements.
  • the connection to the respective switching element can serve to carry out the application of the generated drive signal by the drive signal is transmitted via the connection to the switching elements.
  • At least one of the drive signals a (at least almost constant) voltage is generated as a respective drive signal, for example.
  • a source-gate voltage for the switching elements can do the Control default digital (intermediate) stored to be evaluated by the control device.
  • the activation specification is, for example, specific to a desired temperature of a medium which is to be heated by the heating element.
  • the control input is designed as control information, which, for example, determines a switching frequency with which the heating element is to be controlled.
  • the drive specification may be determined as a function of a detection of a temperature sensor.
  • a first drive command may be first control information (indicating, for example, blocking the AC power) and the second drive command may be second control information (indicating, for example, enabling the AC power).
  • a heating system according to the invention is provided in order to carry out a heating control of the heating element on the basis of the detected temperature, in particular so as to determine a control input.
  • the food processor according to the invention brings with it the same advantages as have been described in detail with reference to a heating system according to the invention and / or a method according to the invention.
  • the food processor may be suitable to be operated according to a method according to the invention.
  • a balance which can weigh the medium, in particular at least one food present in the mixing vessel.
  • a thereby determined weight information of the food can be displayed, for example, via a display device, such as a display or a touch screen, a user of the food processor.
  • the detected temperature of the temperature sensor and / or a set heating power is displayed on the display device. It may be possible for a heating control of the heating system by the user at a Input device of the food processor, such as the touch screen, influenced or activated. This allows a very comfortable operation of the food processor.
  • FIG. 1 Shown schematically are parts of a heating system 200 according to the invention.
  • FIG. 1 serves Fig. 1 to illustrate a method 100 according to the invention.
  • a load circuit 201 and a drive circuit 202 are identified, which are preferably circuits with separate masses and / or (at least approximately) separate galvanic circuits 201, 202.
  • the control circuit 202 may optionally be provided a control circuit which, for example, the control device 220 includes and is electrically connected to a potential separation device 270. Alternatively, the control device 220 may also be integrated directly into the load circuit 201.
  • the potential separation device 270 (on the input side, eg in the control circuit) and / or the control device 220 and / or the load circuit 201 may be connected to a first ground potential GND (first ground) (as in FIG Fig. 1 exemplified).
  • a different second ground potential SGND (second ground, which is at least not directly connected to GND) can optionally be connected to a second terminal 270.2 of the potential separation device 270 and / or to an input terminal 250.3 of two switching elements 250 be electrically connected (as well as in Fig. 2 is shown in more detail).
  • an energy transmitter 280 may be provided which, for example, can provide the second ground potential SGND (this is also closer in FIG Fig. 2 shown).
  • the switching elements 250, d. H. a first switching element 250a and a differently aligned second switching element 250b, z. B. be designed as a transistor or MOSFETs. Due to a respective parasitic diode 250.1, it is necessary to provide both switching elements 250 in an anti-serial connection in order to completely block (i.e., in both current directions) an alternating voltage U or alternating current I of a voltage source 260, in particular an alternating voltage source 260.
  • the individual switching elements 250 may have an input terminal 250.3 with a source potential S and an output terminal 250.4 with a drain potential D and a control terminal 250.2 with a drive potential G, in particular gate potential G.
  • the potential separation device 270 can have at least one first (output) port 270.1 and the second (output) port 270.2, which are each connected to the drive circuit 202.
  • further (input) connections can be provided which, for example, are connected to the control device side or control circuit side.
  • a first separation unit 270.3 eg, first winding 270.3
  • a second separation unit 270.4 eg, second winding 270.4 of the potential separation device 270, which illustrate the galvanic separation, are shown on the input side may also be an optocoupler or the like, which thus does not have to have windings.
  • the first terminal 270.1 of the potential separation device 270 is z. B. via a first resistor R1 and / or at least one control element 230 with the control port 250.2 of the first switching element 250a and a second resistor R2 and / or at least one (possibly further) control element 230 to the control port 250.2 of the second switching element 250b electrically connected.
  • a third resistor R3 may be provided which z. B. with a high Resistance value is performed to increase the stability of the circuit.
  • the second connection 270.2 of the potential separation device 270 is, for example, electrically connected (eg, directly and / or via a second ground potential) to the input connections 250.3 of the switching elements 250, ie, to the source potential S.
  • a common reference potential S for the drive signal A can be created and / or the drive signal A can be applied to the switching elements 250 according to a method 100 according to the invention.
  • the drive signal A (for example, as a gate-source voltage) for driving the switching elements 250, ie, for transferring the switching elements 250 from an open state, in which the current flow of a current I in the load circuit 201 is inhibited, is used in a closed state in which the flow of current is allowed, and / or vice versa.
  • the heating power of a heating element 210 in particular a thick film heater 210, can be reliably controlled and / or regulated in the load circuit 201.
  • Fig. 2 is the in Fig. 1 or a similar circuit configuration of a heating system 200 shown schematically.
  • a power supply device 290 is shown for the drive circuit 202, which has, for example, a voltage source X1, the z. B. supplies a mains voltage and / or the voltage source 260 in Fig. 1 equivalent.
  • This may, for example, be connected to an energy transmitter 280, which z. B. as a rectifier provides the power supply for the drive circuit 202.
  • a second ground potential SGND which differs from a first ground potential GND of the load circuit 201, that is to say in particular is implemented galvanically separated from it.
  • a first voltage V1 can be provided thereby or through the energy transmitter 280, which z. B. is used to operate at least one control element 230.
  • the one or more control elements 230 are, for example, as a semiconductor switch, for example.
  • the potential-free generation of the drive signal A takes place, for example, that at least a control element 230 is driven by the potential separation device 270 and / or the first voltage is generated galvanically isolated and / or the switching elements 250 are each connected to the second ground potential SGND.
  • the potential separation device 270 is, for example, by operated a second voltage V2, which can be provided by the energy exchanger 280.
  • An initiation of the potential-free generated activation signal A takes place, for example, by a control device 220, which in particular drives the potential separation device 270.
  • the control device 220 provides, for example, a voltage supply U270 for the potential separation device 270 and / or a control signal KS at an input of the potential separation device 270.
  • a mixing vessel 2 of a food processor 1 is shown.
  • a medium 20 is shown in the mixing vessel 2 with a stirrer 3, wherein the medium 20 can be heated by a heating element 210.
  • the heating element 210 is, for example, integrated into a mixing-vessel bottom 2.1, wherein the heating element 210 can then optionally also be designed separately from the food processor 1.
  • the mixing vessel 2 can be detachably connected to the heating system 200 of the food processor 1, wherein electrical contacts for integrating the heating element 210 into the load circuit 201 can also be provided.
  • the activation of the heating element 210 is then controlled, for example, by a control device 220 which, for example, is likewise connected to the load circuit 201 and / or is integrated in an electronics system of the food processor 1.
  • a control device 220 which, for example, is likewise connected to the load circuit 201 and / or is integrated in an electronics system of the food processor 1.
  • temperature values can be evaluated by the detection of a temperature sensor 4 by the control device 220, the temperature sensor 4 being integrated into the mixing vessel, for example.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Control Of Resistance Heating (AREA)
EP17200251.1A 2017-11-07 2017-11-07 Système de chauffage permettant le fonctionnement d'un élément chauffant Active EP3481143B1 (fr)

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EP17200251.1A EP3481143B1 (fr) 2017-11-07 2017-11-07 Système de chauffage permettant le fonctionnement d'un élément chauffant

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EP17200251.1A EP3481143B1 (fr) 2017-11-07 2017-11-07 Système de chauffage permettant le fonctionnement d'un élément chauffant

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EP3481143A1 true EP3481143A1 (fr) 2019-05-08
EP3481143B1 EP3481143B1 (fr) 2021-07-14

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4500802A (en) * 1982-06-21 1985-02-19 Eaton Corporation Three terminal bidirectional source to source FET circuit
DE4446796A1 (de) * 1994-12-24 1996-06-27 Rowenta Werke Gmbh Schaltungsanordnung für elektrische Haushaltsgeräte
CA2427039A1 (fr) * 2003-04-29 2004-10-29 Kinectrics Inc. Commutateur bidirectionnel haute vitesse a semiconducteurs
TW200501794A (en) * 2003-06-25 2005-01-01 Matsushita Electric Works Ltd Dimming device
JP2012153912A (ja) * 2011-01-24 2012-08-16 Ss Alloy Kk 通電熱加工装置
DE202016104258U1 (de) * 2015-08-07 2016-09-12 Semiconductor Components Industries, Llc Integrierte Schaltsteuerung von Anti-Serienschaltern

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4500802A (en) * 1982-06-21 1985-02-19 Eaton Corporation Three terminal bidirectional source to source FET circuit
DE4446796A1 (de) * 1994-12-24 1996-06-27 Rowenta Werke Gmbh Schaltungsanordnung für elektrische Haushaltsgeräte
CA2427039A1 (fr) * 2003-04-29 2004-10-29 Kinectrics Inc. Commutateur bidirectionnel haute vitesse a semiconducteurs
TW200501794A (en) * 2003-06-25 2005-01-01 Matsushita Electric Works Ltd Dimming device
JP2012153912A (ja) * 2011-01-24 2012-08-16 Ss Alloy Kk 通電熱加工装置
DE202016104258U1 (de) * 2015-08-07 2016-09-12 Semiconductor Components Industries, Llc Integrierte Schaltsteuerung von Anti-Serienschaltern

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