JP3148329U - Network transformer for electromagnetic disturbance reduction - Google Patents

Abstract

Disclosed is a transformer that can reduce disturbance caused by electromagnetic waves by eliminating high-frequency signals. Electromagnetic disturbance reduction including a conversion unit, a plurality of high-frequency signal attenuating elements, and a plurality of high-frequency signal path elements, for transmitting information by electrically connecting two network facilities. In the network transformer 1, the conversion unit 10 receives input power and input information of the one network facility and converts them into output power and output information, respectively. The high-frequency signal attenuating element 30 is electrically connected to the conversion unit 10. The high-frequency signal path element 40 receives the output information and the output power, attenuates high-frequency noise between the output information and the output power, and transmits the attenuated high-frequency signal to a load of another network facility. The signal attenuating element 30 and the load are connected in parallel with a path connecting the high-frequency signals of the output information and the output power. To nest. [Selection] Figure 2

Description

  The present invention relates to a network transformer, and more particularly to a network transformer for reducing electromagnetic disturbance.

  In general, a network transformer is provided between an interface of a terminal facility and a network acquisition / shipment chip, and information is transmitted to another facility connected to the network through coupling of an internal electric field, And the signal is smoothed and strengthened by the internal coil, thereby preventing different voltages or currents of different network equipments from destroying the network equipments through the network.

  As shown in FIG. 1, the circuit of the network transformer 100 that is commercially available includes a conversion unit 200, a choke coil 300 that is electrically connected to the conversion unit 200, and an electrical connection to the choke coil 300. The conversion unit 200 takes the input power S100 and the input information S101 of the network equipment (not shown) and converts it into output power S200, and outputs it by the induction coil 400. Information S201 is generated, and thus, the AC power of the output power S200 is separated by the choke coil 300, and the output information S201 is transmitted to another network facility (not shown). The objectives of transmission and power conversion can be achieved.

  However, according to the conventional network transformer 100, the high-frequency signal between the output power S200 and the output information S201 cannot be separated, and disturbance due to electromagnetic waves is likely to occur.

  The main object of the present invention is to provide a network transformer for reducing electromagnetic disturbance that can reduce disturbance caused by electromagnetic waves by eliminating high-frequency signals.

According to the network transformer for electromagnetic disturbance reduction according to claim 1 of the present invention, it is for electrically connecting two network facilities to transmit information, and includes a conversion unit and a plurality of high-frequency signal attenuating elements. And a network transformer for electromagnetic disturbance reduction including a plurality of high-frequency signal path elements,
The conversion unit takes input power and input information of the one network facility and converts them into output power and output information, respectively.
The high-frequency signal attenuating element is electrically connected to the conversion unit, takes the output information and the output power, attenuates high-frequency noise between the output information and the output power, and other network equipment To the load of
The high-frequency signal path element is provided between the high-frequency signal attenuating element and the load, and takes high-frequency signals of the output information and the output power to be integrated and grounded. Network transformer.

  According to the network transformer for reducing electromagnetic disturbance according to claim 2 of the present invention, the network transformer further includes a choke coil connecting the conversion unit and the high-frequency signal attenuating element, and the choke coil exchanges the output power with the alternating current. Power is separated.

  According to the network transformer for reducing electromagnetic disturbance according to claim 3 of the present invention, the high-frequency signal attenuating element is an inductance, and the high-frequency signal path element is a capacitor.

  According to the network transformer for electromagnetic disturbance reduction of the present invention, there is an effect that disturbance due to electromagnetic waves can be reduced by eliminating high-frequency signals.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Example 1
First, referring to FIG. The network transformer 1 according to the first embodiment of the present invention includes a conversion unit 10, a plurality of high-frequency signal attenuating elements 30, and a plurality of high-frequency signal path elements 40, and two network facilities (see FIG. A plurality of terminals connected to transmit information, and the conversion unit 10 takes the input power S10 and the input information S11 of the one network facility (not shown) and outputs it. The high frequency signal attenuating element 30 is electrically connected to the conversion unit 10 and takes the output information S21 and the output power S20, respectively. The high-frequency noise between the output information S21 and the output power S20 is attenuated and transmitted to a load of another network facility (not shown), and the high-frequency signal path Child 40, the high frequency signal attenuation element 30 has the parallel connected passage which connects the load, and integrated to the ground by taking a high-frequency signal S30 and the output power S20 and the output information S21. According to such a configuration, disturbance due to electromagnetic waves can be reduced.

  The conversion unit 10 according to the present invention includes a primary side coil 11 and a secondary side coil 12, and when the primary side coil 11 takes input power S10 and input information S11, the secondary side coil 12 Output information S21 and output power S20 are generated and transmitted to the high-frequency signal attenuating element 30, and in this embodiment, the high-frequency signal attenuating element 30 is an inductance, and the high-frequency noise between the output information S21 and the output power S20 due to the inductance. (In particular, high frequency noise in the range of 30 MHz to 3 GHz) is greatly attenuated, and the output information S21 and output power S20 in which the high frequency noise is greatly attenuated are transmitted to the load of other network equipment, and the high frequency signal path The element 40 is connected in parallel with a path connecting the high-frequency signal attenuating element 30 and the load, and the network The pressure device 1 is provided with a ground terminal 50 electrically connected to the high-frequency signal path element 40. In the present embodiment, the high-frequency signal path element 40 is a capacitor having a low impedance at a high frequency, Therefore, the high-frequency signal S30 is transmitted to the high-frequency signal path element 40 before the output information S21 and the output power S20, in which the high-frequency noise is greatly attenuated, is transmitted to the load of other network equipment. The signal S30 is separated, and the high frequency signal S30 of the output information S21 and the output power S20 is integrated and grounded through the high frequency signal path element 40.

(Example 2)
Reference is also made to FIG. The network transformer 1 according to the second embodiment of the present invention further includes a choke coil 20 that connects the conversion unit 10 and the high-frequency signal attenuating element 30, and the input power S10 and the input information S11 are converted into the conversion. The power is input to the primary coil 11 of the unit 10, the output power S20 and the output information S21 are generated by the secondary coil 12 and transmitted to the choke coil 20, and the AC power of the output power S20 is transmitted by the choke coil 20. After that, the output power S20 and the output information S21 are transmitted to the load of other network equipment through the high-frequency signal attenuating element 30, the high-frequency noise is reduced, and the high-frequency signal path element 40 As a result, the high frequency signal S30 of the output power S20 and the output information S21 is integrated and transmitted to the ground terminal 50. It is, Then, so the high-frequency signal S30 are separated.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and they are not excluded from the range of this invention.

It is a schematic diagram which shows the circuit of the conventional network transformer. It is a schematic diagram which shows the circuit of the network transformer which concerns on Example 1 of this invention. It is a schematic diagram which shows the circuit of the network transformer which concerns on Example 2 of this invention.

Explanation of symbols

  1: network transformer, 10: conversion unit, 11: primary side coil, 12: secondary side coil, 20: choke coil, 30: high frequency signal attenuating element, 40: high frequency signal path element, 100: network transformer, 200 : Conversion unit, 300: choke coil, 400: induction coil, S10: input power, S11: input information, S20: output power, S21: output information, S30: high frequency signal, S100: input power, S101: input information, S200 : Output power, S201: Output information.

Claims (3)

Electromagnetic connection for transmitting information by connecting two network facilities electrically, and for reducing electromagnetic disturbance including a conversion unit 10, a plurality of high-frequency signal attenuating elements 30, and a plurality of high-frequency signal path elements 40 In network transformer,
The conversion unit 10 takes the input power S10 and the input information S11 of the one network facility and converts them into output power S20 and output information S21, respectively.
The high-frequency signal attenuating element 30 is electrically connected to the conversion unit 10 and takes the output information S21 and the output power S20 to attenuate high-frequency noise between the output information S21 and the output power S20. To other network equipment loads,
The high-frequency signal path element 40 is connected in parallel to a path connecting the high-frequency signal attenuating element 30 and the load. The high-frequency signal path element 40 takes the high-frequency signal S30 of the output information S21 and the output power S20 and integrates them. A network transformer for reducing electromagnetic disturbance, characterized in that:   Furthermore, the choke coil 20 which connects the said conversion unit 10 and these said high frequency signal attenuation | damping elements 30 is included, The alternating current power of the said output electric power S20 is separated by the said choke coil 20, The Claim 1 characterized by the above-mentioned. The network transformer for electromagnetic disturbance reduction described.   The network transformer for electromagnetic disturbance reduction according to claim 1, wherein the high-frequency signal attenuating element 30 is an inductance, and the high-frequency signal path element 40 is a capacitor.

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