TWM592192U - Power supply device - Google Patents

Abstract

A power supply device coupled to a power device, includes an output connection port and a controller. When the output connection port is coupled to a connection cable, the controller is activated to generate a handshake signal, so as to communicate with the power device. When the power device is determined as a suppliable device via the handshake signal, the controller controls the power supply device to supply the power to the power device through the connection cable. When the connection cable is not connected to the output connection port, the controller is disabled and does not generate the handshake signal.

Description

Power supply device

The present disclosure relates to a power supply device, and particularly to a power supply device that supplies power through an Ethernet line.

At present, most of the products on the market are because the power supply device (Power Source Equipment) and the load device (Power Device) do full-time handshake signal communication to determine whether the power supply device should supply power to the load device, so even if the load device is not When coupled to a power supply device, the power supply device will continue to send handshake signals for detection and cause power loss, and the current power supply device of the Ethernet network cannot meet the requirements of the current efficiency energy regulations, such as: Department of Energy (DoE) in the United States, EC certificate of conformity (EC CoC) in Europe, etc.

In order to reduce the power consumption under no load and meet the requirements of current efficiency and energy regulations, it is necessary to optimize the power supply device and its control method.

In view of this, the present disclosure proposes a power supply device coupled to a power device, including: an output port and a controller. The output port is used for coupling to a connecting line. When the connection line is coupled to the output port, the controller is activated to generate a handshake signal to communicate with the power device. When determining that the power device can be powered by the handshaking signal, the controller controls the power supply device to supply power to the power device via the connection line. When the connection line is not coupled to the output port, the controller is disabled and does not generate the handshake signal.

According to an embodiment of the present disclosure, the power supply device further includes a power converter, which is used to convert the external voltage to the voltage and/or current required by the power device when the power device is determined to be a target for power supply, and It is used to convert the external voltage into a supply voltage, wherein the controller is activated by the supply voltage.

According to an embodiment of the present disclosure, the power supply device further includes an input port and a data integration unit. The input port receives an external data. The data integration unit supplies the external data and the voltage and/or current required by the power device to the power device through the output port and the connection line.

According to an embodiment of the present disclosure, the power supply device further includes a trigger unit. When the connection line is coupled to the output port, the trigger unit is triggered, so that the supply voltage is supplied to the controller through the trigger unit, thereby activating the controller.

According to an embodiment of the present disclosure, when the connection line is not coupled to the output port, the trigger unit is not triggered, so that the supply voltage cannot be provided to the controller through the trigger unit, thereby disabling the controller .

According to an embodiment of the present disclosure, the trigger unit includes an elastic sheet and a metal contact. The shrapnel is coupled to a node that provides the aforementioned supply voltage. The metal contact is coupled to the controller. When the connection line is not coupled to the output port, the elastic piece is electrically isolated from the metal contact.

According to an embodiment of the present disclosure, the trigger unit includes an elastic sheet and a metal contact. The shrapnel is coupled to a node that provides the aforementioned supply voltage. The metal contact is coupled to the controller. When the connecting wire is coupled to the output port, one end of the connecting wire abuts the elastic piece to actuate the elastic piece and contacts the metal contact, so that the elastic piece is electrically coupled to the metal contact.

According to an embodiment of the present disclosure, the power supply device further includes a detection unit that determines whether the connection line is coupled to the output port. When the connection line is coupled to the output port, the detection unit supplies the supply voltage to the controller to activate the controller; when the connection line is not coupled to the output port, the detection unit Disable the controller by not mentioning the supply voltage to the controller.

According to an embodiment of the disclosure, the detection unit includes a light source and a light sensor. The light source is used to generate a light beam. The light sensor is used to detect the light beam. When the connection line is coupled to the output port, the light sensor does not detect the light beam, and the detection unit supplies the supply voltage to the controller.

According to an embodiment of the present disclosure, the detection unit includes a magnetic field generator and a magnetic field receiver. The magnetic field generator is used to generate a magnetic field. The magnetic field receiver is used to receive the magnetic field. When the connection line is coupled to the output port, the magnetic field receiver does not receive the magnetic field. At this time, the detection unit provides the supply voltage to the controller.

The following description is an embodiment of the disclosure. Its purpose is to illustrate the general principles of this disclosure, and should not be regarded as a limitation of this disclosure. The scope of this disclosure shall be determined by the scope of the patent application.

It is worth noting that the content disclosed below can provide multiple embodiments or examples for practicing the different features of the present disclosure. The specific component examples and arrangements described below are only used to briefly explain the spirit of the present disclosure, not to limit the scope of the present disclosure. In addition, the following specification may reuse the same symbol or text in multiple examples. However, the purpose of repeated use is merely to provide a simplified and clear description, and is not intended to limit the relationship between multiple embodiments and/or configurations discussed below. In addition, the description that one feature described in the following specification is connected to, coupled to, and/or formed on another feature, etc., may actually include a plurality of different embodiments, including direct contact of such features, or other additional features The features are formed between the features, etc., so that the features are not in direct contact.

FIG. 1 is a block diagram of a power supply device according to an embodiment of the disclosure. As shown in FIG. 1, the power supply device 100 includes a power converter 110, a controller 120, an input port 130, a data integration unit 140, an output port 150, and a trigger unit 160. In this embodiment, when the power device 10 is connected to the power supply device 100 through the connection line 170 (for example, an Ethernet cable), the power supply device 100 can not only receive the data received from the input port 130 via the connection line 170 After being transmitted to the power device 10, the power device 10 can also be powered by the power converter 110 at the same time through the power converter 110 through a voltage received externally (for example, mains power).

Specifically, when the power device 10 is connected to the output port 150 of the power supply device 100 through the connection line 170, the controller 120 generates a handshake signal HS and transmits the handshake signal HS to the power device 10 via the connection line 170. Communicate to determine whether the power device 10 is a standard-compliant power device. If it is determined that the power device 10 conforms to the specifications, the controller 120 can determine the power/current required by the power device 10 through the communication process (for example, determine how much power to be given to the power device 10 through the current signal), and allow the power supply The device 100 supplies power to the power device 10. Since the power supply agreement has been established, the controller 120 does not need to communicate with the power device 10 any longer, so it will stop generating the handshake signal HS at this time. If it is determined that the power device 10 does not meet the specifications, the controller 120 prohibits the power supply device 100 from supplying power to the power device 10 and continues to periodically send the handshake signal HS for confirmation.

On the other hand, when the power device 10 is not connected to the output port 150 of the power supply device 100, in the conventional method, the controller 120 will continue to periodically generate and send a handshake signal HS to confirm the power device 10 Whether the power supply device 100 has been connected. However, such an approach may cause the controller 120 to continue to consume power to generate the handshake signal HS for the confirmation operation even when the power supply device 100 is not connected.

As a result of the conventional method, the power supply device 100 still has the problem of power consumption when the power supply device 100 is not connected to the power device 10. In this embodiment, when the power supply device 100 is not connected to the power device 10, the controller 120 will not start and will not generate the handshake signal HS, so as to reduce the power loss of the power supply device 100 during no-load, and thus meet the The requirements of the energy efficiency regulations and their specific implementation will be explained as follows.

According to an embodiment of the present disclosure, the power supply device 100 is a power over Ethernet (PoE) specification that complies with IEEE 802.3 at. According to another embodiment of the present disclosure, the power supply device 100 is an Ethernet power supply specification that complies with IEEE 802.3 af. According to yet another embodiment of the present disclosure, the power supply device 100 is an Ethernet power supply specification that complies with IEEE 802.3 bt.

In this embodiment, the power converter 110 is used to convert the external voltage VEXT (eg, mains power) into the supply voltage VDD. In some embodiments, the power converter 110 may be an AC/DC converter, which is used to convert the AC voltage provided by the commercial power supply to a DC voltage, which can be used for components in the power supply device 100 (for example, the controller 120) And/or a device (for example, the power device 10) outside the power supply device 100 performs power supply.

The controller 120 receives the power supply of the supply voltage VDD through the triggered trigger unit 160 (details will be described later), and generates a handshake signal HS. According to an embodiment of the present disclosure, when the controller 120 confirms that the power device 10 is a power-supplyable object through the handshake signal HS (that is, the power device 10 conforms to the Ethernet power supply specification), the controller 120 stops sending Handshake signal HS. In addition, at this time, the controller 120 can learn the load of the power device 10 through the process of communicating with the power device 10, and control the power converter 110 to convert the external voltage VEXT to provide the voltage/current required by the power device 10. The voltage/current can be provided to the power device 10 via the data integration unit 140, the output port 150, and the connection line 170 for power supply.

According to another embodiment of the present disclosure, when the controller 120 confirms that the power device 10 is not a power-supplyable object through the handshake signal HS (that is, the power device 10 does not comply with the specification of power supply over Ethernet), the controller 120 The control power supply device 100 does not supply power to the power device 10 and continues to periodically send the handshake signal HS to confirm the condition of the power device 10.

The input port 130 receives external data DEXT and transmits the external data DEXT to the data integration unit 140. . When the controller 120 confirms that the power device 10 is a power-suppliable object through the handshake signal HS, the data integration unit 140 can transmit the external data DEXT to the power device 10 through the output port 150 and the connection line 170.

The output port 150 is used to be coupled to the connection line 170, wherein the connection line 170 has a connector (not shown in FIG. 1) coupled to the output port 150. According to an embodiment of the present disclosure, the output port 150 may be a socket that receives an RJ-45 connector, and the connecting line 170 is a network cable with an RJ-45 connector. When the output port 150 is coupled to the connection line, it represents that the output port 150 accommodates the RJ-45 connector of the network cable.

In this embodiment, the power supply device 100 further includes a trigger unit 160 for triggering when the connection line 170 is coupled to the output port 150. According to an embodiment of the present disclosure, when the trigger unit 160 is triggered, the supply voltage VDD output by the power converter 110 may be directly provided to the controller 120 via the trigger unit 160, so as to supply power to the controller 120 to start the controller 120, so that The controller 120 sends a handshake signal HS to communicate with the power device 10. According to another embodiment of the present disclosure, when the trigger unit 160 is not triggered, the supply voltage VDD does not supply power to the controller 120, so the controller 120 does not issue a handshake signal HS to save power consumption of the power supply device 100, and Meet the requirements of efficient energy regulations. According to an embodiment of the present disclosure, in order to more accurately detect whether the connector of the cable 170 is inserted into the output port 150, the trigger unit 160 is located in the output port 150.

In an embodiment, the trigger unit 160 includes a first connection portion 161 and a second connection portion 162, wherein the first connection portion 161 and the second connection portion 162 are electrically connected when no force is applied to the first connection portion 161 Sexual isolation (that is, the trigger unit 160 is not triggered), and when the first connection portion 161 is urged, the first connection portion 161 can movably contact the second connection portion to form an electrical connection (that is, The trigger unit 160 is triggered). Specifically, when the connection line 170 is not coupled to the output port 150, the first connection portion 161 does not receive any force to maintain the status quo, and is electrically isolated from the second connection portion 162, so that the supply voltage VDD cannot be It is provided to the controller 120 via the trigger unit 160, so that the controller 120 is disabled. When the connection line 170 is coupled to the output port 150, the first connection portion 161 receives the force of abutment and pushing of one end (such as a connector) of the connection line 170, causing displacement and finally contacting the second connection portion 162 An electrical connection is formed so that the supply voltage VDD can be provided to the controller 120 via the trigger unit 160, so that the controller 120 is started. The specific implementation of the trigger unit 160 will be further described below.

FIG. 2 is a schematic diagram of the trigger unit according to an embodiment of the disclosure. As shown in FIG. 2, the trigger unit 200 includes an elastic piece 210 (that is, the first connection portion 161 of FIG. 1) and a metal contact 220 (that is, the second connection portion 162 of FIG. 1 ), in which the elastic piece 210 It is coupled to a node that receives the supply voltage VDD (for example, the output end of the power converter 110), and the metal contact 220 is coupled to the controller 120 of FIG. According to an embodiment of the present disclosure, the trigger unit 200 corresponds to the trigger unit 160 of FIG. 1.

FIG. 3 is a schematic diagram showing an output port according to an embodiment of the present disclosure. As shown in FIG. 3, the output port 310 is used to receive the connector 320 of the connection line. According to an embodiment of the present disclosure, the connection line is used to couple to the power supply device 100 and the power device 10 of FIG. 1, and the output port 310 corresponds to the output port 150 of FIG. 1. According to an embodiment of the present disclosure, the trigger unit 200 is located in the output port 310.

According to an embodiment of the present disclosure, when the connector 320 is inserted into the output port 310 (that is, the connector 320 is inserted into the output port 310 according to the insertion direction D), the connector 320 abuts the elastic piece 210 to actuate the elastic piece 210 (for example , Press down) so that the dome 210 directly contacts the metal contact 220 (ie, makes the dome 210 electrically connected to the metal contact 220). In the present embodiment, electrically connecting the shrapnel 210 to the metal contact 220 means that the trigger unit 200 is triggered. In other words, when the connector 320 is inserted into the output port 310, the shrapnel 210 is electrically connected to the metal contact 220, and the supply voltage VDD supplies power to the controller 120 through the shrapnel 210 and the metal contact 220, so that the controller 120 Start and send a handshake signal HS to communicate with the power device 10 connected via the connection line 170 to determine whether to power the power device 10.

According to another embodiment of the present disclosure, when the connector 320 is not inserted into the output port 310, the elastic piece 210 and the metal contact 220 are electrically isolated. In this embodiment, electrically isolating (or not electrically connecting) the shrapnel 210 from the metal contact 220 means that the trigger unit 200 is not triggered. Therefore, at this time, the controller 120 cannot receive the supply voltage VDD to start, and thus does not generate a handshake signal HS to communicate with the power device, thereby reducing the no-load condition of the power supply device 100 (ie, not connected to the power device 10 ) Under the power loss.

It is worth mentioning that the trigger unit in this embodiment includes mechanical structures such as shrapnel and metal contacts without other circuit elements. Whether it is triggered is determined by physical operation. In other words, in the embodiment of the present disclosure, determining whether the connection line is coupled to the output port (that is, whether the connector is inserted into the output port) is not through electrical detection, for example, through a component in the power supply device Signal (for example, current), and determine whether the connection line is coupled to the output port according to whether a corresponding return signal (for example, another current) is received. Instead, the trigger unit in this embodiment is completely detected through physical detection. When the connector is inserted into the output port, the elastic piece and the connector are linked and finally contacted with the metal contact, thereby determining that the connector is fully inserted into the output connection Port (that is, the connection line is already coupled to the output port). The advantage of this method is that the judgment can be fast and accurate, and the cost of its setting is low.

However, this disclosure is not limited to this. In other embodiments, other detection elements can also be used to determine whether the connection line is coupled to the output port, which will be described as follows.

FIG. 4 is a block diagram of a power supply device according to another embodiment of the present disclosure. Comparing the power supply device 400 with the power supply device 100 of FIG. 1, the trigger unit 160 of FIG. 1 is replaced with the detection unit 460 of FIG. 4, and the remaining components are the same.

The detection unit 460 is used to determine whether the connection line 170 is coupled to the output port 150 and determine whether to supply the supply voltage VDD to the controller 120 to generate the handshake signal HS. According to an embodiment of the present disclosure, when the detection unit 460 determines that the connection line 170 is coupled to the output port 150, the detection unit 160 supplies the supply voltage VDD to the controller 120 to supply power to the controller 120 and is controlled by the control The device 120 sends a handshake signal HS to communicate with the power device 10. According to an embodiment of the present disclosure, in order to more accurately detect whether the connector of the cable 170 is inserted into the output port 150, the detection unit 460 is located in the output port 150.

According to another embodiment of the present disclosure, when the detection unit 460 determines that the connection line 170 is not coupled to the output port 150, the detection unit 460 does not provide the supply voltage VDD to the controller 120 to disable the controller 120 In order to save the power consumption of the power supply device 400, and then meet the requirements of efficient energy regulations.

FIG. 5 is a block diagram of a detection unit according to another embodiment of the present disclosure. As shown in FIG. 5, the detection unit 500 includes a light source 510 and a light sensor 520. According to an embodiment of the present disclosure, the detection unit 500 is located in the output port 150 of FIG. 4.

The light source 510 is used to generate the light beam L, and the light sensor 520 is used to detect the light beam L. The light sensor 520 further includes a first light node 521 and a second light node 522, the first light node 521 is coupled to a node providing a supply voltage VDD, and the second light node 522 is coupled to the controller of FIG. 4 120. When the light sensor 520 detects the light beam L, the light sensor 520 electrically separates the first light node 521 and the second light node 522. When the light sensor 520 cannot detect the light beam L, the light sensor 520 electrically couples the first light node 521 to the second light node 522.

According to an embodiment of the present disclosure, when the connector 50 of the cable 170 is inserted into the output port 150 between the light source 510 and the light sensor 520, the connector 50 blocks the light beam L generated by the light source 510, so that the light The sensor 520 cannot detect the light beam L and electrically couples the first light node 521 to the second light node 522. That is, at this time, the light sensor 520 provides the supply voltage VDD to the controller 120, so that the controller 120 sends out a handshake signal HS to communicate with the power device 10.

According to another embodiment of the present disclosure, when the connector 50 is not inserted into the output port 310, the light sensor 520 detects the light beam L and electrically separates the first light node 521 and the second light node 522, That is, the light sensor 520 does not provide the supply voltage VDD to the controller 120, so that the controller 120 does not generate the handshake signal HS, so as to reduce the power loss of the power supply device 400 under no load.

FIG. 6 is a block diagram of a detection unit according to another embodiment of the present disclosure. As shown in FIG. 6, the detection unit 600 includes a magnetic field generator 610 and a magnetic field receiver 620. According to an embodiment of the present disclosure, the detection unit 600 is located in the output port 150 of FIG. 4.

The magnetic field generator 610 is used to generate the magnetic field M, and the magnetic field receiver 620 is used to receive the magnetic field M. The magnetic field receiver 620 further includes a first magnetic field node 621 and a second magnetic field node 622. The first magnetic field node 621 is coupled to a node providing the supply voltage VDD, and the second magnetic field node 622 is coupled to the controller 120 of FIG. . When the magnetic field receiver 620 detects the magnetic field M, the magnetic field receiver 620 electrically separates the first magnetic field node 621 and the second magnetic field node 622. When the magnetic field receiver 620 cannot detect the magnetic field M, the magnetic field receiver 620 electrically couples the first magnetic field node 621 to the second magnetic field node 622.

According to an embodiment of the present disclosure, when the connector 60 of the cable 170 is inserted into the output port 150 and is located between the magnetic field generator 610 and the magnetic field receiver 620, the connector 60 blocks the magnetic field M generated by the magnetic field generator 610 , So that the magnetic field receiver 620 cannot detect the magnetic field M and electrically couples the first magnetic field node 621 to the second magnetic field node 622. That is, at this time, the magnetic field receiver 620 provides the supply voltage VDD to the controller 120, so that the controller 120 sends out a handshake signal HS to communicate with the power device 10.

According to another embodiment of the present disclosure, when the connector 60 is not inserted into the output port 150, the magnetic field receiver 620 detects the magnetic field M and electrically separates the first magnetic field node 621 and the second magnetic field node 622. That is, the magnetic field receiver 620 does not provide the supply voltage VDD to the controller 120, so that the controller 120 does not generate the handshake signal HS, so as to reduce the power loss of the power supply device 400 under no load.

By judging whether the connector of the cable is inserted into the output port, it is decided whether to activate the controller, and then decide whether to generate a handshake signal to communicate with the power device, which can effectively reduce the power loss of the power supply device during no-load, which is in line with the increasing Stringent efficiency and energy regulations. In addition, the implementation method of determining whether the connector of the connecting line is inserted into the output port is a physical operation. In other words, judging whether the connection line is coupled to the output port (that is, whether the connector is inserted into the output port) is not through electrical detection, but through physical detection, when the connector is inserted into the output port, the shrapnel is used Interlock with the connector and finally make contact with the metal contact, and then determine that the connector is fully inserted into the output port (that is, the connection line has been coupled to the output port). The advantage of this method is that the judgment can be fast and accurate, and the cost of its setting is low.

The above is an overview of the embodiment. Those with ordinary knowledge in the technical field should be able to easily design or adjust based on the present disclosure to perform the same purpose and/or achieve the same advantages of the embodiments described herein. Those with ordinary knowledge in the technical field should also understand that the same configuration should not deviate from the spirit and scope of this creation, and they can make various changes, substitutions, and alterations without departing from the spirit and scope of this creation. The illustrative method represents only exemplary steps, but these steps are not necessarily performed in the order shown. Additional steps may be added, substituted, changed in order, and/or eliminated to adjust as appropriate and consistent with the spirit and scope of the disclosed embodiments.

100, 400: power supply device 110: power converter 120: controller 130: input port 140: data integration unit 150, 310: output port 160, 200: trigger unit 170: connecting line 10: Electrical installation 210: shrapnel 220: metal contacts 320, 50, 60: connector 460, 500, 600: detection unit 510: light source 520: Light sensor 521: First ray node 522: Second ray node 610: magnetic field generator 620: Magnetic field receiver 621: first magnetic field node 622: Second magnetic field node VDD: supply voltage HS: handshake signal DEXT: external data VEXT: external voltage L: beam M: magnetic field D: Insertion direction

FIG. 1 is a block diagram showing a power supply device according to an embodiment of the present disclosure; Figure 2 is a schematic diagram showing a trigger unit according to an embodiment of the present disclosure; Figure 3 is a schematic diagram showing an output port according to an embodiment of the present disclosure; FIG. 4 is a block diagram showing a power supply device according to another embodiment of the present disclosure; Figure 5 is a block diagram of a detection unit according to another embodiment of the present disclosure; and FIG. 6 is a block diagram of a detection unit according to another embodiment of the present disclosure.

100: power supply device

110: power converter

120: controller

130: input port

140: data integration unit

150: output port

160: Trigger unit

10: Electrical installation

VDD: supply voltage

HS: handshake signal

DEXT: external data

VEXT: external voltage

Claims (11)

A power supply device, coupled to a power device via a connection line, includes: An output port for coupling to the aforementioned connection line; and A controller, wherein when the connection line is coupled to the output port, the controller is activated to generate a handshake signal to communicate with the power device, wherein when the power device is determined by the handshake signal When the object can be powered, the controller controls the power supply device to supply power to the power device through the connection line; when the connection line is not coupled to the output port, the controller is disabled and does not generate the Hold the signal. The power supply device as described in item 1 of the scope of patent application further includes: A power converter for converting an external voltage to the voltage and/or current required by the power device when the power device is judged to be capable of supplying power, and for converting the external voltage into a supply voltage, wherein The controller is activated by the supply voltage. The power supply device as described in item 2 of the scope of patent application further includes: An input port to receive an external data; and A data integration unit supplies the external data and the voltage and/or current required by the power device to the power device through the output port and the connection line. The power supply device as described in item 2 of the scope of patent application further includes: A trigger unit, wherein the trigger unit is triggered when the connection line is coupled to the output port, so that the supply voltage is supplied to the controller via the trigger unit, thereby activating the controller. The power supply device according to item 4 of the patent application scope, wherein when the connection line is not coupled to the output port, the trigger unit is not triggered, so that the supply voltage cannot be provided to the controller through the trigger unit To disable the above controller. The power supply device as described in item 4 of the patent application scope, wherein the trigger unit includes a first connection portion and a second connection portion, wherein the first connection is not applied to the first connection portion The portion is electrically isolated from the second connection portion, and when the first connection portion is urged, the first connection portion moves to contact the second connection portion to form an electrical connection. The power supply device as described in item 4 of the patent application scope, wherein the trigger unit includes: A shrapnel, coupled to a node that provides the above supply voltage; and A metal contact, coupled to the controller; When the connection line is not coupled to the output port, the elastic piece is electrically isolated from the metal contact. The power supply device as described in item 4 of the patent application scope, wherein the trigger unit includes: A shrapnel, coupled to a node that provides the above supply voltage; and A metal contact, coupled to the controller; When the connecting wire is coupled to the output port, one end of the connecting wire abuts the elastic piece to actuate the elastic piece and contacts the metal contact, so that the elastic piece is electrically coupled to the metal contact. The power supply device as described in item 2 of the scope of patent application further includes: A detection unit to determine whether the connection line is coupled to the output port, wherein when the connection line is coupled to the output port, the detection unit provides the supply voltage to the controller to activate the controller ; When the connection line is not coupled to the output port, the detection unit does not mention the supply voltage to the controller to disable the controller. The power supply device as described in item 8 of the patent application scope, wherein the detection unit includes: A light source for generating a light beam; and A light sensor for detecting the light beam, wherein when the connection line is coupled to the output port, the light sensor does not detect the light beam, and the detection unit supplies the supply voltage Provided to the above controller. The power supply device as described in item 8 of the patent application scope, wherein the detection unit includes: A magnetic field generator for generating a magnetic field; and A magnetic field receiver for receiving the magnetic field, wherein when the connection line is coupled to the output port, the magnetic field receiver does not receive the magnetic field, and the detection unit provides the supply voltage to the control Device.

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