JP3195228U - Lightning strike prevention device for network signal processing circuit - Google Patents

Abstract

Provided is a lightning strike prevention device for a network signal processing circuit capable of filtering a high voltage by each autotransformer when a network connector receives an instantaneous high voltage generated by a lightning strike. A network chip is electrically connected to a network connector by a processing circuit. In the processing circuit 3, a plurality of circuit channels 31 are provided between the network chip 1 and the network connector 2, and a signal coupling capacitor 32 is electrically connected to at least one set of two adjacent circuit channels 31. Connected to. The autotransformer 4 is electrically connected in a parallel manner between at least one set of two adjacent circuit channels 31 between the signal coupling capacitor 32 and the network connector 2. Each autotransformer 4 is electrically connected to the ground side 43. [Selection] Figure 2

Description

  The present invention relates to a lightning strike prevention device for a network signal processing circuit, and in particular, a single transformer is electrically connected to at least one set of two adjacent circuit channels of a processing circuit between a network chip and a network connector. The present invention relates to a lightning strike prevention device that can reduce the network connector from receiving an instantaneous high voltage generated by a lightning strike.

  At present, computer technology is rapidly developing, and desktop personal computers or notebook personal computers are already ubiquitous in various places in society. Computers have been developed aiming at higher computing power, faster computing speed, and further miniaturization, and network communication technology has also been rapidly developed. This brings a new world to people's lives, learning, work and entertainment. In addition, necessary real-time information, advertisements, e-mails, and the like are exchanged between people via network communication. In addition, various types of information are searched through the network, real-time communication, and online games are performed, and the relationship between people and the network is inseparable.

  The network transmits data by cable connection or wireless connection. For cable connections, a network connector is required. As the network is widely used, the data capacity transmitted on the network is also increasing, and network operators have increased the transmission speed of the network from 10 Mbps to 100 Mbps or 1 Gbps in order to meet the user's demand. At present, the transmission speed of the optical cable network has reached 10 Gbps or more. However, if the network cable is subjected to a lightning strike, the network connector to which the network cable is connected receives an instantaneous high voltage signal from the lightning strike, and each electronically connected electronic device on the processing circuit by the instantaneous high voltage. There is a risk that the device, the network chip, etc. will be damaged, and the transmission of the network signal will become unstable, interrupted, or cannot be completely connected. Alternatively, a circuit board mounted on a network chip, a main board of an electronic device (computer, hub, etc.), etc. may be damaged or damaged due to an instantaneous high voltage shock. In general, network types are classified into local area networks, metropolitan area networks, wide area networks, wireless networks, the Internet, and the like based on the geographical area covered by the computer. When performing transmission work such as connecting, uploading, and downloading network signals, it is easily affected by signals from nearby electronic elements, electromagnetic interference, and surge phenomena (such as lightning strikes) that occur in the signal. Becomes unstable. For this reason, it is necessary to install a filter element in the network connector, perform signal filtering processing, and reduce interference of noise, electromagnetic waves, and surges. However, the instantaneous high-voltage shock generated by lightning strikes cannot be completely filtered, and there is a risk of damage to electronic circuits and elements such as network lines and network chips.

For this reason, the network connector receives a momentary high voltage generated by a lightning strike, which damages the network chip, electronic device, etc., deteriorates the transmission quality of the network signal, interrupts the transmission, or becomes unable to connect. There was a need to solve the problem.
As a prior art document, “a circuit capable of preventing Internet signal coupling and electromagnetic interference” (see, for example, Patent Document 1) filed and registered by the present applicant is disclosed.

  The inventor of the present invention has been engaged in the technology for many years, and in view of the above problems and disadvantages, collected related materials, repeated prototyping and improvement, and the network signal processing circuit has been affected by lightning strikes. Lightning prevention of network signal processing circuit that can reduce the generation of voltage, can prevent the network chip or related electronic device from being destroyed by lightning, and can smoothly transmit the network signal Invented the device.

Utility Model Registration No. 3185034

A main object of the present invention is to have a processing circuit electrically connected to each of a network chip and a network connector, and the processing circuit provided between the network chip and the network connector has a plurality of circuit channels, and at least one set. A signal coupling capacitor is electrically connected to each of the two adjacent circuit channels, and a parallel connection between at least one set of two adjacent circuit channels between the signal coupling capacitor and the network connector is provided. Each winding transformer is electrically connected and each winding transformer is electrically connected to the ground side, so that when the network connector receives an instantaneous high voltage change caused by lightning strike, Network signal processing that can filter high voltage by winding transformer To provide a lightning strike preventing device of the road.
Another object of the present invention is a coil winding in which the above-described autotransformer is wound on a core. The core has a ring shape, a rectangular shape or the like, and the coil winding is wound on the core. Another object of the present invention is to provide a lightning strike prevention device for a network signal processing circuit whose both ends are electrically connected to the two adjacent circuit channels described above.

  In order to solve the above-mentioned problem, the invention of claim 1 is a lightning strike prevention device for a network signal processing circuit, comprising a network chip, a processing circuit, and a network connector for transmitting a network signal. The network chip is electrically connected to the network connector using a processing circuit, and the processing circuit is provided with a plurality of circuit channels between the network chip and the network connector, and at least A signal coupling capacitor is electrically connected to each other on a set of two adjacent circuit channels, and the processing circuit is at least one set of two adjacent circuits interposed between the signal coupling capacitor and the network connector. A circuit channel, the two adjacent circuit channels Between the channels, the autotransformers that reduce instantaneous high-voltage changes are electrically connected in parallel, and each autotransformer is electrically connected to the ground side that filters high voltages. It is characterized by that.

  Invention of Claim 2 is the lightning strike prevention apparatus of the network signal processing circuit of Claim 1, Comprising: A self-winding transformer has a core and the coil wound on a core, and both ends of a coil are , And are electrically connected to the two adjacent circuit channels, respectively.

  The invention of claim 3 is the lightning strike prevention device of the network signal processing circuit according to claim 1, wherein the autotransformer has a core and a coil wound on the core, and the core is a ring. It has a shape or a rectangular frame shape.

  The invention of claim 4 is a lightning strike prevention device for a network signal processing circuit according to claim 1, wherein an electrical resistance value of 0.1Ω to 10Ω is provided in advance in the autotransformer. And

  The present invention provides a lightning strike prevention device for a network processing circuit. A processing circuit is electrically connected between a network chip and a network connector, and a signal coupling capacitor is electrically connected to each circuit channel of the processing circuit. In addition, the autotransformers are connected in parallel. Due to the coupling action of the autotransformer, the instantaneous high voltage generated by the lightning strike received by the network signal processing circuit can be filtered. As a result, it is possible to prevent the network chip and related electronic elements from being shocked or damaged by an instantaneous high voltage, and to prevent the network signal processing circuit from being subjected to the shock generated by the effect of lightning strike. Can do. Thereby, the application of the network signal is further smoothed and the data transmission is not interrupted.

It is a block diagram which shows one Example of the network signal processing circuit of this invention. It is a simplified circuit diagram showing a network signal processing circuit of the present invention. It is a block diagram which shows the other Example of the network signal processing circuit of this invention. It is a circuit diagram which shows the autotransformer of this invention.

  DESCRIPTION OF EMBODIMENTS Embodiments showing the objects, features, and effects of the present invention will be described in detail with reference to the drawings.

  Please refer to FIG. FIG. 1 is a block diagram showing an embodiment of a network signal processing circuit of the present invention. FIG. 2 is a simplified circuit diagram showing a network signal processing circuit of the present invention. FIG. 3 is a block diagram showing another embodiment of the network signal processing circuit of the present invention. As shown in FIGS. 1 to 3, the network signal processing circuit of the present invention includes a network chip 1, a network connector 2, and a processing circuit 3 electrically connected between the network chip 1 and the network connector 2. ,including.

  The network chip 1 has a pin group 11 for transmitting an electronic / voltage signal. The network connector 2 has a terminal group 21 for transmitting electronic / voltage signals. The pin group 11 is a part of the network chip 1, and the terminal group 21 is a part of the network connector 2. The circuit configurations of the network chip 1 and the network connector 2 are omitted. The processing circuit 3 is electrically connected between the pin group 11 and the terminal group 21. The processing circuit 3 includes at least one set of two adjacent circuit channels 31. A signal coupling capacitor 32 is electrically connected to each of the two adjacent circuit channels 31. Between the at least one set of two adjacent circuit channels 31 between the network connector 2 and the signal coupling capacitor 32, the autotransformer 4 is electrically connected in a parallel manner. Each autotransformer 4 is a coil winding 42 wound on a core 41. The input end 421 and the output end 422 at both ends of the coil winding 42 are electrically connected to the two adjacent circuit channels 31, respectively. In addition, the coil winding 42 of each autotransformer 4 is electrically connected to the ground side 43. Thereby, the circuit of the autotransformer 4 is formed.

  As shown in FIG. 1, the network chip 1 and the processing circuit 3 of the above-described network signal processing circuit are formed on a circuit board 5 in an electrically connected manner, and an external network connector 2 is connected via the circuit board 5. Is electrically connected. Alternatively, as shown in FIG. 3, the network connector 2 and the processing circuit 3 are formed on the circuit board 5 and electrically connected to the external network chip 1 via the circuit board 5. The The circuit board 5 is used to supply power necessary for circuits such as the network chip 1, the network connector 2, and the processing circuit 3. The circuit board 5 is supplied with a power source (dry battery, rechargeable battery, lithium battery, button battery, or the like, or electrically connected to an external commercial power source via a power cable, and the circuit board 5 requires a power source. Can be installed. However, the arrangement of the network chip 1 and the network connector 2 is a conventional technique, and the detailed configuration is not the focus of the present invention, and thus will not be described here.

  As shown in FIG. 1, the processing circuit 3 uses one end of each circuit channel 31 to each pin 111 of the pin group 11 of the network chip 1 (each pin 111 is MD0 +, MD0−, MD1 +, MD1). −, MD2 +, MD2−, MD3 + and MX3−, each number is a number for distinguishing each pin 111, and each number can be converted according to design needs, and the present invention is Electrically connected to (but not limited to). As shown in FIG. 3, the processing circuit 3 uses the other end of each circuit channel 31 to each terminal pin 211 of the terminal group 21 of the network connector 2 (each terminal pin 211 is MX0 +, MX0−). , MX1 +, MX1 +, MX2 +, MX2-, MX3 +, and MX3-, each number is a number that distinguishes each terminal pin 211, and each number can be converted according to design needs , But not limited to the present invention).

  Please refer to FIG. 2 and FIG. FIG. 2 is a simplified circuit diagram showing a network signal processing circuit of the present invention. FIG. 4 is a circuit diagram showing the autotransformer of the present invention. As can be seen from FIGS. 2 and 4, when the network signal processing circuit according to the present invention is implemented, the terminal pin 211 on one side of the terminal group 21 of the network connector 2 transmits a network signal in the process of transmitting a lightning strike from the outside. When an impact is received, the instantaneous high voltage and surge generated by the lightning strike are transmitted from the network connector 2 to each circuit channel 31 of the processing circuit 3 and from each circuit channel 31 to each autotransformer 4. However, each autotransformer 4 has a low electrical resistance value (about 0.1Ω to 10Ω) inside, so that instantaneous high voltage and surge reaching several thousand volts generated by the impact of lightning strike are 43, the voltage is stepped down, the high voltage is buffered, and the momentary high voltage due to lightning strikes can be reduced from causing damage to the network system.

  The explanation is based on the data obtained from the test by the lightning strike simulator. A DC filtering circuit applied in a network line can be used for filtering DC and low frequency noise. DC and low-frequency noise such as surges generated by static electricity or lightning strike are extremely short duration and low-frequency signals. A surge generated by static electricity or lightning strike has an amplitude of about several thousand volts, a frequency of about 1 kHz to 1 MHz, and a voltage rise time (Rise Time) of about 1 μs to 10 μs. However, the transmission speed of a connector that performs high-speed transmission such as a network connector is about 10 Mb / s to 1 Gb / s, and the frequency of the corresponding transmission signal is 2.5 MHz to 125 MHz, both of which far exceed 1 MHz. . For this reason, a low frequency signal can be filtered by setting a frequency threshold (for example, 1 MHz) of the DC high-pass filter circuit and allowing only a signal exceeding the threshold to pass. When a lightning strike generator tested according to IEC 61000-4-5 uses a 10/700 lightning strike waveform for an instantaneous high voltage shock caused by a lightning strike, the internal resistance value is about 15Ω. And the external resistance of the lightning generator must be equal to 25Ω. If the network uses a 10 / 100M network cable, it consists of four lines, each line has four 100Ω electrical resistances (equal to four sets of 100Ω connected in parallel, equivalent to an external 25Ω Are connected in series. For example, when the electric shock generator generates an instantaneous high voltage of 6 K volts, the autotransformer 4 (assuming an electrical resistance value of DC 1Ω) performs step-down. The calculation formula is shown in Formula 1.

[Equation 1]
6KV / (15 + 100 + 1) × 1Ω (the electric resistance value of the autotransformer 4 and set to 1Ω) = 51.72V

  The lightning strike received by the network connector 2 is stepped down and buffered to 51.72 V by the low electrical resistance value of the autotransformer 4, and a large amount of voltage (about 5.95 KV) is electrically connected to each autotransformer 4. Grounded side 43 is eliminated. Only the remaining 51.72 V remains on the network processing circuit 3 after the autotransformer 4 has processed. This voltage value is a voltage value that the processing circuit 3 can withstand (the network line can withstand a voltage of about several tens to several hundreds volts). That is, when the network connector 2 receives a momentary high voltage of a lightning stroke, the voltage is stepped down and buffered by the auto-transformer 4, so that the momentary high voltage is applied to each pin 111 of the pin group 11 corresponding to the network chip 1. The high voltage generated by the lightning strike does not cause damage or damage to the processing circuit 3, the network chip 1, and the like.

  The sensitivity of each autotransformer 4 can be divided between 40 μH and 1000 μH depending on the impact. When calculated based on the equivalent impedance value and the equivalent impedance value is 100 MHz, the value of the autotransformer 4 can be between 200Ω and 10000Ω, and the impedance appearing on the line of the frequency band transmitting the network. Does not affect the transmission of network signals. That is, signal transmission amounts such as 10M, 100M, and 1G, which are general network signals, can smoothly pass through the processing circuit, and are not affected or affected by the autotransformer 4.

  The above description shows an embodiment of the present invention, and does not limit the scope of the present invention. In the lightning strike prevention apparatus for a network processing circuit according to the present invention, the network chip 1 and the network connector 2 are electrically connected by the processing circuit 3. Between at least one set of two adjacent circuit channels 31 of the processing circuit 3, a signal coupling capacitor 32 is electrically connected to each other, and an autotransformer 4 is connected in parallel. Since the autotransformer 4 is the coil winding 42 wound around the core 41, the coupling action by the autotransformer 4 is realized, and the instantaneous generated by the external lightning strike received by the network connector 2 The high voltage is filtered to realize a function of reducing the influence of the instantaneous high voltage on the network chip 1, the circuit channel 31, and related electronic elements, and the instantaneous high voltage generated by the lightning strike on the circuit channel 31. It is possible to prevent failure due to voltage. Here, structures, devices, and the like that can realize the above-described effects are included in the present invention, and simple modifications and changes that are equivalent effects are included in the present invention.

  That is, the present invention provides a lightning strike prevention device for a network processing circuit, wherein a processing circuit is electrically connected between a network chip and a network connector, and a signal coupling capacitor is provided in each circuit channel of the processing circuit. In addition to being electrically connected to each other, autotransformers are connected in parallel. Due to the coupling action of the autotransformer, the instantaneous high voltage generated by the lightning strike received by the network signal processing circuit can be filtered. As a result, it is possible to prevent the network chip and related electronic elements from being shocked or damaged by an instantaneous high voltage, and to prevent the network signal processing circuit from being subjected to the shock generated by the effect of lightning strike. Can do. Thereby, the application of the network signal is further smoothed and the data transmission is not interrupted. The above description shows a preferred embodiment of the present invention, and does not limit the scope of the present invention. Any modifications that are simple modifications and equivalent effects of the contents of this specification and the drawings are all described. It is included in the scope of the utility model registration request of the present invention.

  As can be seen from the above description, when the lightning strike prevention device for the network signal processing circuit of the present invention is implemented, the above-described effects and objects can be reliably realized, and the present invention is a device that is excellent in practicality. .

DESCRIPTION OF SYMBOLS 1 Network chip 11 Pin group 111 Pin 2 Network connector 21 Terminal group 211 Terminal pin 3 Processing circuit 31 Circuit channel 32 Signal coupling capacitor 4 Single volume transformer 41 Core 42 Coil winding 421 Input end 422 Output end 43 Ground side 5 Circuit substrate

Claims (4)

A lightning strike prevention device for a network processing circuit comprising a network chip, a processing circuit, and a network connector for transmitting a network signal,
The network chip is electrically connected to the network connector using the processing circuit, and the processing circuit is provided with a plurality of circuit channels between the network chip and the network connector, and at least one set A signal coupling capacitor is electrically connected to each of the two adjacent circuit channels.
The processing circuit includes at least one set of two adjacent circuit channels interposed between the signal coupling capacitor and the network connector, and an instantaneous high voltage change between the two adjacent circuit channels. A network signal processing circuit, wherein the autotransformers for reducing the voltage are electrically connected in a parallel manner, and each autotransformer is electrically connected to a ground side for filtering high voltage. Lightning strike prevention device.   The self-winding transformer has a core and a coil wound on the core, and both ends of the coil are electrically connected to the two adjacent circuit channels, respectively. Item 2. A lightning strike prevention device for a network signal processing circuit according to Item 1.   The network signal processing circuit according to claim 1, wherein the autotransformer includes a core and a coil wound on the core, and the core has a ring shape or a rectangular frame shape. Lightning strike prevention device.   2. The lightning strike prevention device for a network signal processing circuit according to claim 1, wherein an electrical resistance value of 0.1Ω to 10Ω is previously provided in the autotransformer.

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