TWM523227U - Lightning protection and noise filtering circuit for electric signal - Google Patents

Description

Lightning protection and noise filtering circuit for electronic signals

The present invention provides an anti-lightning and noise filtering circuit for electronic signals, especially for network signals transmitted by the network signal processing circuit, including noise filtering, and eliminating high voltage and surge of lightning strikes. And to achieve the purpose of eliminating noise or high voltage, surge and other interference of network signals.

According to the rapid development of computer technology today, many electronic and electrical products provide convenience and comfort in daily life and work, and electronic devices commonly used in daily life or work such as desktop computers, notebook computers, tablets or Smart phones, etc., have been widely found in every corner of the society. The development trend of electronic devices is also moving toward the direction of computing power, speed and small size. As network communication technology is also rapidly developing, And bring people's life, study, work and leisure into a new realm that is different from the past, so that people can transmit the required instant information, advertisements or correspondences through the Internet communication, and at the same time Searching for information, instant messaging or online games on the Internet makes the relationship between people and the Internet more intense and inseparable.

For various electronic devices or parts of the network, there are two ways to transmit data by using cable connection and wireless transmission. The cable connection technology needs to be equipped with an electrical connector, with the use of electronic devices and networks. Increasingly wide, electronic signals transmitted by electronic devices and networks The capacity of the data transmitted on the network is also increasing. The network manufacturers have been increasing the speed of network transmission in order to meet the needs of users, from 10Mbps to 100Mbps or 1Gbps, and even the current optical network transmission speed can reach More than 10 Gbps, however, whether it is an electronic signal or a network signal, when it is affected by lightning, the electronic signal connected to the electronic signal or the network signal line receives the lightning high voltage signal, which will be processed by the instantaneous high voltage. Damage to the chip, electronic components, etc. of the electronic device electrically connected to the circuit, in addition to affecting the unstable transmission, interruption or complete failure of the electronic signal or network signal, and even the circuit board mounted on the chip of the electronic device Or electronic devices (such as computers or sharing devices), etc., will be damaged or damaged by the impact of instantaneous high voltage; however, the type of general network can be roughly divided into regional networks according to the geographical scope covered by the computer. , metro network, WAN, wireless network, Internet channel, etc., while connecting, uploading, downloading, etc. During the operation, it is easy to be disturbed by noises such as signals and electromagnetic waves of surrounding electronic components, or when various electronic devices transmit electronic signals, they are also susceptible to interference from signals such as surrounding electronic components and electromagnetic waves. In the case of unstable electronic signal transmission and network signal transmission, filter components, lightning protection devices and signal coupling devices must be provided in the electronic device or electrical connector for signal filtering and lightning protection. Etc., to reduce the interference of high voltage, surge, etc. of noise, electromagnetic waves or lightning strikes.

Therefore, how to solve the problem that the electronic device is subjected to lightning strikes to generate instantaneous high voltage, resulting in damage to the chip, electronic parts or lines, or the loss of electronic signal transmission by external electromagnetic waves, noise, etc., and the quality of the electronic signal transmission is changed. The troubles and troubles of poor transmission, interruption or suspension of transmission content are the direction that those who are engaged in this industry want to improve.

Therefore, in view of the above-mentioned problems and deficiencies, the creators have collected relevant information, and through multi-party assessments and considerations, and through years of experience in the industry, through continuous trial and modification, they have designed to transmit signals for electronic signals. The birth of a new type of patent for lightning protection and noise filtering circuits for electronic signals that are stable for electronic signal transmission, including electromagnetic waves (EMI), noise interference, or transient high voltages of lightning strikes.

The main purpose of the present invention is that the lightning protection and noise filtering circuit is electrically connected to the first electronic device and the second electronic device by using the electronic signal processing circuit, and the processing circuit is the first electronic device and the second electronic device. A plurality of circuit channels are disposed between the devices, and capacitors and autotransformers are electrically connected to one or more circuit channels, and the plurality of autotransformers are respectively wound on the iron core and two groups are wound a coil winding, wherein one set of coil windings includes a first coil winding and a second coil winding to form a common mode inductor unit, and the other set of coil windings includes a third coil winding and a fourth coil winding, thereby becoming an autotransformer, and It can reduce the interference of electronic signals by electromagnetic waves or noise, and eliminate the transient high voltage and surge caused by lightning strikes, so as to stabilize the transmission of electronic signals.

The secondary purpose of the present invention is that the set of coil windings of the autotransformer comprises a first coil winding and a second coil winding, wherein the first coil winding and the second coil winding are electrically connected to any two adjacent circuit channels respectively. And form a common mode inductance unit having an inductance value of 90 ohms (Ω, ohms) to 1000 ohms (Ω, ohms), and the inductance value of the preferred embodiment is 800 ohms (Ω, ohms); The other coil winding of the coupling transformer includes a third coil winding and a fourth coil winding, and is electrically connected to the circuit channel of the adjacent side by the third input end of the third coil winding of the respective coupling transformer, and each third coil The third output end of the winding is electrically connected to the fourth input end of each fourth coil winding, and then each fourth coil The fourth output end of the winding is electrically connected to the adjacent other side circuit channel, respectively, and the inductance value of each coupling transformer is between 30μH and 350μH, and the DC resistance is 0.5~2 ohms (Ω, ohms), and The sensing value of the preferred embodiment is 80 μH, and the DC resistance (DCR) is 1 ohm (Ω, ohms), and the inductive reactance value (ohm) of each coupled transformer is 2πxFxL, and the parameter F is the operating frequency [unit : Hertz (Hz)]; the reference number L is the inductance [unit: micro hertz (μH)]; π = 3.14159, the autotransformer includes a core in the shape of a ring or a rectangular frame, and can The rectangular frame-shaped iron core winds the first coil winding, the second coil winding, the third coil winding, and the fourth coil winding of the two sets of coil windings on each side.

Another purpose of the creation is that the first electronic device for the lightning protection of the lightning protection can be a chip on a circuit board such as a desktop computer, a notebook mainframe, a tablet host or a smart phone host. Or a processor, etc., and the processing circuit can be electrically connected to the preset circuit board, and then electrically connected to the external second electronic device through the circuit board (can be a desktop computer host, a notebook computer host) , electrical connectors such as tablet mainframes or smart phone mainframes (such as USB electrical connectors or network connectors) or portable storage devices (such as flash drives or removable hard drives); or the first electronic The device and the processing circuit are electrically connected to the circuit board, and then electrically connected to the external first electronic device by the circuit board; and the first wire winding and the second coil of the coil winding of the autotransformer The winding is electrically connected to the adjacent two circuit passages through a circuit layout on the preset circuit board; and the third coil winding of the other coil winding of the autotransformer is preset through the third input end Circuit The upper circuit layout is electrically connected to the circuit channel adjacent to one side, and the third output end of the third coil winding is also electrically connected to the fourth input end of the fourth coil winding through the circuit layout of the preset circuit board, and then By default The circuit board preset circuit layout is electrically connected to the ground side, and the fourth output end of the fourth coil winding is electrically connected to the adjacent adjacent circuit channel through a circuit layout of the preset circuit board.

Another object of the present invention is that the plurality of autotransformers are respectively wound on the iron core with two sets of coil windings, wherein one set of coil windings includes a first coil winding and a second coil winding to form a common mode inductor unit. The other coil winding includes the third coil winding and the fourth coil winding, which becomes an autotransformer, and the common mode inductor unit and the autotransformer share the same core, thereby reducing the manufacturing cost and facilitating the autotransformer. It can be assembled in one or more circuit channels of the processing circuit, which can shorten the processing time, save time and labor, and is more economical.

1‧‧‧First electronic device

11‧‧‧Feet set

111‧‧‧ pins

2‧‧‧Second electronic device

21‧‧‧Terminal group

211‧‧‧ terminal feet

3‧‧‧Processing circuit

31‧‧‧ Circuit Channel

4‧‧‧Autotransformer

41‧‧‧ iron core

42‧‧‧ coil winding

420‧‧‧Common mode inductance unit

421‧‧‧First coil winding

4211‧‧‧ first input

4212‧‧‧ first output

422‧‧‧second coil winding

4221‧‧‧second input

4222‧‧‧second output

43‧‧‧ coil winding

431‧‧‧third coil winding

4311‧‧‧ third input

4312‧‧‧ third output

432‧‧‧fourth coil winding

4321‧‧‧ fourth input

4322‧‧‧ fourth output

44‧‧‧ Grounding side

5‧‧‧Circuit board

The first diagram is a circuit block diagram of the creation.

The second picture is a simplified circuit diagram of the creation.

The third figure is a circuit block diagram of the preferred embodiment of the present invention.

The fourth figure is a circuit diagram of the authoring autotransformer.

In order to achieve the above objectives and effects, the technical means used in the creation, its construction, the method of implementation, etc., are described in detail in the preferred embodiment of the present invention, and the features and functions are as follows.

Please refer to the first, second, third and fourth figures for the circuit block diagram, simple circuit diagram, circuit block diagram of the preferred embodiment, and circuit diagram of the autotransformer. It can be clearly seen from the figure. The lightning protection and noise filtering circuit of the electronic signal of the creation includes the first An electronic device 1, a second electronic device 2, and a processing circuit 3, wherein: the first electronic device 1 has a pin group 11 for transmitting an electronic/voltage signal, and the second electronic device 2 has a signal for transmitting electrons/voltage The terminal group 21 of the signal is electrically connected to the processing circuit 3 between the pin group 11 and the terminal group 21, and the processing circuit 3 includes one or more circuit channels 31, one or more of which are The circuit channels 31 are electrically connected to the autotransformer 4 in parallel, and the respective coupling transformers 4 are wound on the iron core 41 to wind two coil windings 42, 43, and one set of coil windings 42 includes the first coil winding. 421, the second coil winding 422, the first coil winding 421 is electrically connected to the adjacent circuit channel 31 by a first input end (A+) 4211 and a first output end (A-) 4212, and The second coil winding 422 is electrically connected in series to the other adjacent circuit channel 31 by the second input end (B+) 4221 and the second output end (B-) 4222, and is provided for the first coil winding 421 and the second. The coil windings 422 are electrically connected to any two adjacent circuit channels 31 to form a common mode inductance unit 4 20; The other coil winding 43 includes a third coil winding 431 and a fourth coil winding 432, and the third input end 4311 (A+) of the third coil winding 431 of the coil winding 43 is electrically connected to the adjacent one. The circuit output 31 and the third output end 4312 (A-) of the third coil winding 431 are electrically connected to the fourth input end 4321 (B+) of the fourth coil winding 432, and are electrically connected to the ground side 44, and The fourth output end 4322 (B-) of the fourth coil winding 432 is electrically connected to the adjacent another circuit channel 31 to form a loop of the autotransformer 4; the autotransformer 4 is attached to the iron core 41. At the same time, two sets of coil windings 42 are wound, and one set of coil windings 42 constitutes a common mode inductor unit 420, and the other set of coil windings 43 constitutes a loop of the autotransformer 4 to reach the common mode inductor unit 420 and the autotransformer 4 Share The purpose of the same core 41 is to reduce the expense of manufacturing the common mode inductor unit 420 and the autotransformer 4, and to facilitate assembling the autotransformer 4 to one or more circuit paths 31 of the processing circuit 3, Shorten the processing time, save time and labor, and more economical.

And the first electronic device 1 (which may be a chip or processor on a circuit board such as a desktop computer, a notebook mainframe, a tablet host or a smart phone host) and the processing circuit 3, and the above-mentioned network signal, The electrical device can be electrically connected to the circuit board 5, and then electrically connected to the external second electronic device 2 through the circuit board 5, and the second electronic device 2 can be a desktop computer and a notebook. Electrical connectors such as computer mainframes, tablet mainframes or smart phone mainframes (such as USB electrical connectors or network connectors) or portable storage devices (such as flash drives or removable hard drives); The second electronic device 2 and the processing circuit 3 are electrically connected to the circuit board 5, and then electrically connected to the external first electronic device 1 by the circuit board 5; and the first electronic device 1 is provided by the circuit board 5. The power supply required by the circuit such as the second electronic device 2 and the processing circuit 3, and the circuit board 5 can be provided with a power supply (such as a dry battery, a rechargeable battery, a lithium battery or a button type battery, or the power through the power line) Connected to the external power supply, etc. 5 the required power circuit board), but about a first electronic device 1, 2 and the second electronic device to the system configuration of the conventional art, the detailed structure and detailed case to the creation of a non-points, it will not be repeated herein.

In addition, the processing circuit 3 is electrically connected to each pin 111 of the pin group 11 of the first electronic device 1 by using one end of each circuit channel 31 (each pin 111 can be MD0+, MD0-, MD1+, MD1+ respectively). , MD2+, MD2-, MD3+, and MX3-, are only the numbers that are distinguished by the pins 111, and the numbers can still be changed according to the actual design requirements, which is not limited to the patent scope of the creation); and the processing circuit 3 is advantageous. The other end of each circuit channel 31 is electrically connected to each terminal pin 211 of the terminal group 21 of the second electronic device 2 (each terminal pin 211 can be MX0+, MX0-, MX1+, MX1-, MX2+, MX2- respectively). , MX3+ and MD3-, only as the number of each terminal pin 211, the number can be changed according to the actual design requirements, which is not limited to the scope of the patent.

Furthermore, the respective coupling transformers 4 can wind two sets of coil windings 42 and 43 on the iron core 41, and the first coil winding 421 and the second coil winding 422 of one of the coil windings 42 can be first. The coil winding 421 is electrically connected to the adjacent circuit channel 31 by a first input end (A+) 4211 and a first output end (A-) 4212 through a predetermined circuit layout on the circuit board 5, and the second coil winding 422 is The second input terminal (B+) 4221 and the second output terminal (B-) 4222 are also electrically connected to another adjacent circuit channel 31 by using a predetermined circuit layout on the circuit board 5, and the first coil winding 421 is provided. The second coil winding 422 is respectively configured by a predetermined circuit layout on the circuit board 5 and electrically connected to any two adjacent circuit channels 31 to form a common mode inductor unit 420. The inductance value of the common mode inductor unit 420 is Between 90 ohms (Ω, ohms) and 1000 ohms (Ω, ohms), and according to the network signal processing circuit 3, when the network signal is transmitted on each circuit channel 31, the noise conditions of various signals are different, The inductance value of the preferred embodiment of the mode inductor unit 420 can be 800 ohms (Ω, ohms); and in each of the processing circuits 3 During the signal transmission process of the circuit channel 31, when other signals enter and generate interference such as electromagnetic waves (EMI) or noise, the common mode inductance unit 420 can adopt an inductance value of about 800 ohms (( Ω, ohms) However, in practical applications, the inductance value can be adjusted according to actual needs or circuit design, thereby improving the high frequency network signal. The stability of the transmission], the signal frequency band (CIS PR22_CLASS-B, 125MHz) and the octave band signal transmitted in each circuit channel 31 will have a larger intensity (dB) harmonic (such as 250MHz, 375MHz, 500MHz, 625MHz, 750MHz and other frequency bands), but will not exceed the -4dB limit range, and cause electromagnetic waves (EMI) or noise (noise) can not pass, and can effectively filter out electromagnetic waves or noise and other interference; The first input end 4211 (A+) of the first coil winding 421 of the coil winding 42 is electrically connected to the adjacent circuit path 31, and the first output end 4212 (A-) of the first coil winding 421 is a transparent circuit board. The preset circuit layout mode is electrically connected to the second input end 4221 (B+) of the second coil winding 422, and then electrically connected to the ground side 43 through the preset circuit layout of the circuit board 5, and the second coil is The second output end 4222 (B-) of the winding 422 is electrically connected to the adjacent another circuit channel 31 by a predetermined circuit layout of the circuit board 5 for the third coil winding 431 and the fourth winding of the coil winding 43. The coil winding 432 forms a loop of the autotransformer 4 in conjunction with the predetermined line layout of the circuit board 5.

The plurality of autotransformers 4 are respectively composed of a third coil winding 431 and a fourth coil winding 432 of the coil winding 43 and each having a low resistance value (about 0.1 Ω to 10 Ω), and a lightning strike impact. The instantaneous high voltage generated can reach several KV (仟V), and the sudden high voltage, surge, etc. of the lightning strike can be transmitted to the respective coupling transformer 4 via the circuit channel 31, that is, through the third coil of the autotransformer 4. The winding 431 and the fourth coil winding 432 are wound on the iron core 41 in a series connection manner, and the instantaneous high voltage is transmitted to the ground side 44, and the voltage is stepped down and buffered, and the circuit paths 31 are respectively connected by the transformer 4. The network signal in the middle is separated from the instantaneous high voltage, and will not let the instantaneous high voltage The electronic signals are offset each other, and the instantaneous high voltage is transmitted to the ground side 44, which does not affect the network signal transmission between the circuit channels 31, and can be used for each circuit channel 31 to stably transmit electronic signals, thereby reducing lightning strikes. The instantaneous high voltage forms an unstable or interrupted transmission of the electronic signal, and does not cause damage to the network system. The network is simulated by a lightning strike generator of the electronic device to describe the data obtained. The DC filter circuit used in the network circuit of the electronic device can be used to filter the DC and low frequency noise, and the spur generated by the DC or low frequency noise such as static electricity or lightning strike is extremely short duration. It is a low-frequency signal. As for the surge generated by static electricity or lightning strike, its amplitude is about several volts, the frequency is about 1 kHz~1 MHz, and the Rise Time is about 1~10 microseconds (μs). However, the high-speed transmission of electrical connectors such as network electrical connectors, the transmission rate of which mostly falls from 10Mb/s to 1Gb/s, and the corresponding transmission signal frequency ranges from 2.5MHz to 125MHz, both far exceeding 1MH. Therefore, the DC high-pass filter circuit can set a frequency threshold value, for example, 1 MHz, and only pass the signal whose frequency exceeds the threshold value, thereby filtering out the low-frequency signal, and the impact of the instantaneous high voltage generated by the lightning strike is according to IEC 60950. The lightning strike generator of the -4-5 specification uses a 10/700 lightning strike waveform with an internal resistance of approximately 15 ohms. The external resistance of the lightning strike generator must be equal to 25 Ω, if used as a network 10 When the /100M network route is composed of eight lines, each line is connected in series with eight 200Ω resistors (eight 200Ω resistors are connected in parallel to become an external 25Ω equivalent resistor), for example, when a lightning strike occurs. The device generates a transient high voltage (low frequency direct current) of 6KV (仟V), which is stepped down via an autotransformer 4 (which may have a resistance value of 0.1 Ω to 10 Ω, and a predetermined preferred resistance value of 1 Ω). The formula for calculation is: 6KV / (15 + 200 + 1) X1 Ω (the preferred preset resistance of the autotransformer 4 is 1 Ω) ≒ 27.778V.

Then, the lightning strike received by the second electronic device 2 is stepped down to 27.778V through the low resistance value of the autotransformer 4, and the remaining large voltage values (about 5.97KV) are electrically connected to the ground side 44 through the respective coupling transformers 4. Excluding, and the residual voltage value of the processing circuit 3 after the autotransformer 4 is processed is only 27.778V, which is the voltage value that the processing circuit 3 can withstand [the network line can withstand tens to hundreds of volts (V) The voltage value of the processing circuit 3 can be 0.1μF of the coupling capacitor, which can withstand a voltage of about 50V], that is, the instantaneous high voltage of the second electronic device 2 when subjected to lightning strike, can pass through a set of coil windings of the autotransformer 4 43 is wound on the autotransformer 4 in such a manner that the third coil winding 431 and the fourth coil winding 432 are connected in series, and the instantaneous high voltage of the lightning strike can be stepped down and buffered, and the instantaneous high voltage is used by the second electronic device 2 In each circuit channel 31 of the processing circuit 3, that is, through the respective coupling transformers 4 between the circuit channels 31, the instantaneous high voltage is transmitted to the ground side 44 by the third coil winding 431 and the fourth coil winding 432, and the instantaneous high voltage is applied. versus The electronic signal or the network signal in the circuit channel 31 is separated, and the respective coupling transformer 4 does not cause the electronic signal or the network signal to be offset by the instantaneous high voltage, that is, the instantaneous high voltage is not transmitted to the first electronic device 1. The pins 111 of the pair of pins 11 prevent the instantaneous high voltage generated by the lightning strike from causing damage to the processing circuit 3 and the first electronic device 1 or the like, or the attenuation of the electronic signal or the network signal, etc. The circuit channel 31 continues to stably transmit the network signal, which does not cause instability such as interruption or suspension of the electronic signal, provides smooth transmission of the electronic signal, and improves the quality of the electronic signal transmission.

Furthermore, the respective coupling transformers 4 are wound around the core 41 and wound around a group of coils. The third coil winding 431 and the fourth coil winding 432 of the group 43 are electrically connected to the adjacent circuit channel 31 and the third coil winding 431 by the third input terminal 4311 (A+) of the third coil winding 431. The third output end 4312 (A-) is electrically connected to the fourth input end 4321 (B+) of the fourth coil winding 432, electrically connected to the ground side 44, and is the fourth output end of the fourth coil winding 432. 4322 (B-) is electrically connected to another adjacent circuit channel 31 to form a loop of the autotransformer 4, and when the circuit channel 31 of the processing circuit 3 is applied to the transmission of the network signal (ie, alternating current) The transmission amount of the autotransformer 4 may be between 40 μH and 800 μH (microhenry) depending on the different strokes (and the sensitivity value of the preferred embodiment may be 80 μH), if calculated according to the equivalent impedance value. When the equivalent group resistance is at 100 MHz, the value of the autotransformer 4 can be between 200 ohms (Ω) and 10,000 ohms (Ω), which is on the frequency band line transmitted by the network of the electronic device. The impedance presented does not affect the transmission of the network signal. The signal transmission amount of the general network signal is 10M, 100M or 1G. Smoothly passing through the processing circuit without causing interruption, pause or attenuation of the network signal, without being disturbed or affected by the autotransformer 4, and the inductive reactance value of the autotransformer 4 can be calculated by the following formula: Resistance value (ohm) = 2πxFxL

Where: the parameter F is the operating frequency [unit: Hertz (Hz)]; the reference number L is the inductance [unit: Henry (μH)], and π = 3.14159.

In the case of a network signal (high-frequency signal), its operating frequency (F) is 10,000,000 Hz, and the inductance (L) is 80 μH, and the inductance of the autotransformer 4 is calculated, then the auto-coupling The inductive value of transformer 4 is: 2x3.14159x10,000,000x80=50, 265.44 ohms (ohms) ≒ 50K ohms (ohms).

The instantaneous high voltage generated by the lightning strike (low frequency signal) of the electronic device 1, 2 or the network (when 10/700 lightning strike waveform is used, the operating frequency is 10μs+700μs≒1mμs≒1KHz=F) (F=1000Hz) When the inductance of the autotransformer 4 (L=80μH) is obtained, the inductive reactance value of the autotransformer 4 is: 2x3.14159x1,000x80=5.026544 ohms (ohms) ≒5 ohms equivalent impedance [The value of autotransformer 4 can be between 200 ohms (Ω) and 10,000 ohms (Ω)], then the instantaneous high voltage generated by lightning strike can be known by the above formula, inductive reactance and operating frequency and inductance. The sense value is proportional, so the inductive reactance will increase as the signal operating frequency increases, but the increase in the inductive reactance will increase the attenuation of the signal, so an electronic signal or network break will occur. The line or network transmission speed is slow, but it can effectively reduce the inductance (effectively reduce the inductive value to about 5 ohms) through the coupling buffer of the autotransformer 4, which can effectively reduce the signal attenuation. Degree, but can prevent the instability of electronic signal or network signal transmission, interrupt or pause, etc. Phenomenon can be avoided by each circuit channel 31 due to lightning and generate an electronic signal transmission or network interruption or pause phenomenon, so each circuit channel 31 can still be an electronic signal or network signal transmission smooth, free from the influence of lightning.

The plurality of autotransformers 4 are wound on the core 41 to wind the two coil windings 42, 43, and the first coil winding 421 and the second coil winding 422 of the coil winding 42 of the coil winding 42 form a common mode inductance unit 420; The third coil winding 431 and the fourth coil winding 432 of the group coil winding 43 constitute a loop of the autotransformer 4, and the autotransformer formed by the common mode inductor unit 420 and the other coil coil 43 formed by one coil winding 42 In order to separately perform circuit signal processing modes of different frequencies, the common mode inductance unit 420 of one set of coil windings 42 is filtered by external electromagnetic waves or noises for the high frequency network signal, and the other set of coil windings 43 Then, the autotransformer 4 protects against high-frequency instantaneous high voltage, surge, and the like when the lightning strike is performed. The two sets of coil windings 42 and 43 respectively perform network signal processing in different frequency bands, and thus are on the iron core 41 of the autotransformer 4. Simultaneous winding of the two sets of coil windings 42, 43 does not cause mutual interference, conflict, etc.; the autotransformer 4 can respectively perform high-frequency network signal electromagnetic waves, noise, etc., and the low-frequency lightning strike signal is instantaneously high. If the voltage, the glitch, etc. are excluded, the network signal processing circuit 3 can achieve the purpose of multiple protection effects such as external high-voltage, surge, and the like due to external noise, electromagnetic waves, or lightning strikes, so that the first electronic device 1 receives the external After the electronic signal, the anti-lightning and noise filtering of the electronic signal is processed by the autotransformer 4 and the signal coupling capacitor of the processing circuit 3, and the stable electronic signal is transmitted to the first power. 1 device, ensure that the electronic signal transmission and so less prone to interruption or pause for electronic signal applications more smoothly, and improve the quality of transmission of electrical signals.

Therefore, the above description is only a preferred embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. The lightning protection and noise filtering circuit of the electronic signal of the present invention is based on the first electronic device 1 and The two electronic devices 2 are electrically connected by the processing circuit 3, and an autotransformer 4 is electrically connected between a group or a group of adjacent circuit channels 31 of each circuit channel 31, and the autotransformer 4 is Two sets of coil windings 42 and 43 are wound on the iron core 41, and a common mode inductance unit 420 is formed through a set of coil windings 42 to transmit electromagnetic waves (EMI) or impurities contained in the network signal received by the network connector. The noise or the like is filtered through the ground side 44 of the respective coupling transformer 4, and the other coil winding 43 constitutes the autotransformer 4 circuit, which can eliminate the transient high voltage, surge and the like when the lightning strikes, and can reach Processing electricity Each circuit channel 31 of the circuit 3 is free from interferences such as lightning strikes and noise, and can stably transmit electronic signals, reduce external electromagnetic waves or noise, and the like, and can reduce the first electronic device 1, the second electronic device 2, and the circuit. Channel 31 and related electronic components are affected by lightning, high voltage, glitch or electromagnetic waves, noise, etc., to avoid signal processing circuit 3 due to lightning strikes, electromagnetic waves, noise, etc., and use common mode inductance unit The mode in which the 420 and the autotransformer 4 share the same core 41 can reduce the manufacturing cost, and the information affects the instability of the electronic signal or does not meet the requirements of the detection regulations. Therefore, the structure and device that can achieve the aforementioned effects are subject to the present invention. Such simple modifications and equivalent structural changes shall be included in the scope of the patent of this creation and shall be combined with Chen Ming.

Therefore, the present invention is mainly designed for the lightning protection device of the electronic signal processing circuit, and uses the first electronic device, the second electronic device, and the circuit channel to electrically connect the processing circuit and the circuit channels of the processing circuit. The signal coupling capacitor is electrically connected, and the autotransformer is electrically connected, and the autotransformer is wound on the iron core to wind two sets of coil windings, and one set of coil windings constitutes a common mode inductance unit, and the other set of coil windings The loop that constitutes the autotransformer can be used to filter the instantaneous high voltage generated by the lightning strike of the network signal and the external signal of the network signal is filtered as the main protection focus, which can prevent the instantaneous high voltage from causing the first electron. The device, the second electronic device, the circuit channel or related electronic components are impacted and damaged, and are protected from electromagnetic noise, so that the electronic signal can be protected from the impact of lightning and noise. The transmission of electronic signals is smoother, the data transmission is not interrupted or suspended, and the common mode inductor unit and autotransformer Sharing the same core can reduce the manufacturing cost. However, the above description is only a preferred embodiment of the present invention, and thus does not limit the scope of the patent of the creation. Therefore, the simple modification of the creation of the instruction manual and the graphic content is adopted. and The equivalent structural changes shall be included in the scope of the patent of this creation and shall be combined with Chen Ming.

In summary, the lightning protection and noise filtering circuit of the above-mentioned electronic signal processing circuit is actually implemented and implemented, so as to achieve its efficacy and purpose, the creation is an excellent research and development. In order to meet the application requirements of the new patent, 提出 apply in accordance with the law, and hope that the trial committee will grant the case as soon as possible to protect the creators' hard work in research and development, and if the arbitral tribunal has any doubts, please do not hesitate to give instructions to the creator. Strive to cooperate, the real sense of virtue.

1‧‧‧Network Chip

11‧‧‧Feet set

111‧‧‧ pins

2‧‧‧Network connector

21‧‧‧Terminal group

211‧‧‧ terminal feet

3‧‧‧Processing circuit

31‧‧‧ Circuit Channel

4‧‧‧Autotransformer

41‧‧‧ iron core

42‧‧‧ coil winding

420‧‧‧Common mode inductance unit

421‧‧‧First coil winding

4211‧‧‧ first input

4212‧‧‧ first output

422‧‧‧second coil winding

4221‧‧‧second input

4222‧‧‧second output

43‧‧‧ coil winding

432‧‧‧fourth coil winding

4321‧‧‧ fourth input

4322‧‧‧ fourth output

44‧‧‧ Grounding side

Claims (8)

An anti-lightning and noise filtering circuit for an electronic signal, comprising: a first electronic device, a processing circuit, and a second electronic device, wherein: the first electronic device comprises a pin group having a plurality of pins; the processing circuit Electrically connected to the pin group of the first electronic device, and provided with one or more than one circuit channel electrically connected to each pin of the pin group, and then respectively connected to any two adjacent circuit channels The connection is provided with an autotransformer, and the plurality of autotransformers are respectively wound with two sets of coil windings, and each of the plurality of coil windings of the coupling transformer includes a first coil winding and a second coil winding for the first coil winding and the second coil winding The coil windings are electrically connected between any two adjacent circuit channels to form a common mode inductor unit having an inductance value of 90 ohms (Ω ohms) to 1000 ohms (Ω ohms), each of which is coupled to another coil winding of the transformer. That is, the third coil winding and the fourth coil winding are included, and the third input end of the third coil winding of the respective coupling transformer is electrically connected to the circuit channel of the adjacent side, and the third output ends of the third coil windings are respectively respectively Electrical Connected to the fourth input end of each fourth coil winding, and then the fourth output end of each fourth coil winding is electrically connected to the adjacent other side circuit channel respectively, and the sensing value of each coupling transformer is between 30μH ~350μH, and the DC resistance is 0.5~2 ohms (Ω, ohms); and the second electronic device is electrically connected to the processing circuit, and is provided with terminals respectively electrically connected to the circuit channels and having a plurality of terminal pins group. The lightning protection and noise filtering circuit of the electronic signal according to the first aspect of the patent application, wherein the first electronic device and the second electronic device are respectively electronic devices (such as a desktop computer host and a notebook computer host). , tablet host or smart phone host) chip, electricity Connector or network chip, network connector or electrical connector (such as USB electrical connector or network) installed in an electronic device (such as a desktop computer, a notebook host, a tablet host, or a smart phone host) Road connector), portable storage device (such as a flash drive or a removable hard drive). The lightning protection and noise filtering circuit of the electronic signal according to the first aspect of the patent application, wherein the first coil winding of the coil winding of the plurality of autotransformers is the first input end and the first output end The series connection is electrically connected to the adjacent one side circuit channel, and the second coil winding is electrically connected in series to the adjacent other side circuit channel by the second input end and the second output end. The anti-lightning and noise filtering circuit of the electronic signal according to claim 1, wherein the first coil winding and the second coil winding of the plurality of autotransformers constitute a common mode inductor unit, and the preferred embodiment thereof The inductance value is 800 ohms (Ω, ohms). The lightning protection and noise filtering circuit of the electronic signal according to the first aspect of the patent application, wherein the sensing value of the third coil winding and the fourth coil winding of the plurality of autotransformers is induced by the preferred embodiment The value is 80μH, and the DC resistance (DCR) is 1 ohm (Ω, ohms), and the inductive reactance value (ohm) of each transformer is 2πxFxL. The parameter F is the operating frequency [unit: Hertz (Hz)] The reference number L is the inductance [unit: micro hertz (μH)]; π = 3.14159. The anti-lightning and noise filtering circuit of the electronic signal according to the first aspect of the patent application, wherein the plurality of autotransformers comprise a rectangular frame-shaped iron core and two sides of each side of the rectangular frame-shaped iron core a first coil winding, a second coil winding, a third coil winding, and a fourth coil winding of the coil winding. The lightning protection and noise filtering circuit of the electronic signal according to the first aspect of the patent application, wherein the first electronic device and the processing circuit are electrically connected to the predetermined circuit board, and then transmitted through the circuit board. The second electronic device is connected to the external electronic device; or the second electronic device and the processing circuit are electrically connected to the circuit board, and then electrically connected to the external first electronic device by the circuit board. For example, the lightning protection and noise filtering circuit of the electronic signal according to the first aspect of the patent application, wherein the plurality of autotransformers have two sets of coil windings, and the first coil winding of one set of coil windings is through the preset circuit board. The upper circuit layout is electrically connected to the adjacent one side circuit channel, and the second coil winding is also electrically connected to the adjacent other side circuit channel through a circuit layout on the preset circuit board; the third coil winding of the other group of coil windings is The three-input terminal is electrically connected to one adjacent circuit channel through a circuit layout on the preset circuit board, and the third output end of the third coil winding is also electrically connected to the fourth coil winding through a circuit layout of the preset circuit board. After the fourth input end, the preset circuit board preset circuit layout is electrically connected to the ground side, and the fourth output end of the fourth coil winding is electrically connected to the other side through the circuit layout of the preset circuit board. Adjacent circuit channel.