CN217769486U - Hundred million net twine electromagnetic protection circuit and protection component - Google Patents
Hundred million net twine electromagnetic protection circuit and protection component Download PDFInfo
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- CN217769486U CN217769486U CN202222296585.9U CN202222296585U CN217769486U CN 217769486 U CN217769486 U CN 217769486U CN 202222296585 U CN202222296585 U CN 202222296585U CN 217769486 U CN217769486 U CN 217769486U
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Abstract
The utility model discloses a hundred million net twine electromagnetic protection circuit and protection subassembly relates to electromagnetic protection technical field, uses two the same protection units to protect two pairs of differential signal lines respectively between input interface and the output interface, and the protection unit includes gas discharge tube V1, and gas discharge tube V1 receives the input signal; the TVS array is connected respectively after the resistor R1 and the resistor R2 are connected with the two ends of the gas discharge tube V1, the common mode inductor L2 is connected after the common mode inductor L1, the capacitor C1 and the capacitor C2 of the TVS array, the common mode inductor L3 is connected after the common mode inductor L2 is connected with the capacitor C3 and the capacitor C4, and the common mode inductor L3 is connected with the capacitor C5 and the capacitor C6 and then outputs signals. The utility model discloses carry out powerful pulse protection to the net twine, response time reaches the nanosecond rank to the delay is low, no packet loss phenomenon.
Description
Technical Field
The utility model relates to an electromagnetic protection technical field, specific hundred million net twine electromagnetic protection circuits and protective assembly that says so.
Background
The electromagnetic threat not only comprises the electromagnetic destruction of high-power electromagnetic pulses to the equipment, but also comprises the potential threat of natural phenomena such as thunder and lightning to the equipment. With the development of the technology, the response time of the high-power electromagnetic pulse can reach a nanosecond level, and the radiation power is greatly improved, so that a severe test is provided for the electromagnetic protection of equipment. Since most of the information is transmitted through the network, high power electromagnetic protection of the network cable is very important. At present, most of electromagnetic protection components for network cables have the phenomena of long response time, high delay, packet loss, peak leakage and the like, the performance of equipment is greatly reduced while the equipment is protected, and normal communication is influenced. Therefore, designing an electromagnetic protection assembly with short response time and high power bearing capacity becomes an urgent task.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hundred million net twine electromagnetic protection circuits and protective component for solve among the prior art net twine the electromagnetic protection component have most response time long, delay high, appear losing packet and peak reveal the scheduling problem.
The utility model discloses a following technical scheme solves above-mentioned problem:
a hundred mega network cable electromagnetic protection circuit comprises an input interface and an output interface, two pairs of differential signal lines are respectively protected by two identical protection units between the input interface and the output interface, each protection unit comprises a gas discharge tube V1, a resistor R2, a TVS array, a common mode inductor L1, a common mode inductor L2, a common mode inductor L3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5 and a capacitor C6, and a first end and a second end of the gas discharge tube V1 are respectively connected with two pins of the input interface; the resistor R1 is connected with a first end of the gas discharge tube V1, a first end of the resistor R2 is connected with a second end of the gas discharge tube V1, a second end of the resistor R1 is connected with a first end of the TVS array, a second end of the resistor R2 is connected with a fourth end of the TVS array, the first end and the second end of the common-mode inductor L1 are respectively connected with a fifth end and an eighth end of the TVS array, the first end of the capacitor C1 is respectively connected with a third end of the common-mode inductor L1 and a first end of the common-mode inductor L2, the first end of the capacitor C2 is respectively connected with a fourth end of the common-mode inductor L1 and a second end of the common-mode inductor L2, the first end of the capacitor C3 is respectively connected with a third end of the common-mode inductor L2 and a first end of the common-mode inductor L3, the first end of the capacitor C4 is respectively connected with a fourth end of the common-mode inductor L2 and a second end of the common-mode inductor L3, the first end of the capacitor C5 is connected with another pin of the output interface; the third end of the gas discharge tube V1 is grounded, the second end, the third end, the sixth end and the seventh end of the TVS array are grounded, and the second ends of the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C5 and the capacitor C6 are grounded.
The utility model discloses a gas discharge tube V1 of first order can effectively increase protection circuit's power capacity, and the TVS array of second order can protect accurately, improves effect speed. And simultaneously, the utility model discloses still add filter network, carried out fine suppression to the electromagnetic pulse of stop band, consequently can reduce the peak and reveal the phenomenon, promoted protection efficiency greatly. The utility model discloses by LC filter circuit (common mode inductance L1, electric capacity C1 and electric capacity C2; common mode inductance L2, electric capacity C3 and electric capacity C4; common mode inductance L3, electric capacity C5 and electric capacity C6) and bleeder devices (gas discharge tube V1, TVS array) constitute, wherein bleeder devices centering low frequency high power interference protects, filter circuit protects high frequency interference, add resistance (resistance R1 and resistance R2) simultaneously and absorb reflection signal, guarantee the integrality of signal.
Further, the gas discharge tube V1 is an insert type gas discharge tube.
Further, the resistor R1 and the resistor R2 are thin film resistors.
Further, the TVS array is a miniaturized label TVS array.
Further, the common mode inductor L1, the common mode inductor L2, and the common mode inductor L3 are patch common mode inductors.
Further, the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C5, and the capacitor C6 are multilayer ceramic dielectric capacitors.
The utility model provides a hundred million net twine electromagnetic protection subassemblies, includes shielding cavity base, apron and circuit board, shielding cavity base and apron pass through the screw fastening and form the metal shielding cavity, the circuit board arrange in the metal shielding cavity in, a hundred million net twine electromagnetic protection circuit set up on the circuit board.
Rectangular openings for installing network cable interfaces are formed in the two sides of the metal shielding cavity.
The shielding cavity base is provided with four bosses for mounting and fixing the circuit board, and the circuit board is provided with metalized through holes for fixing with the shielding cavity base.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
(1) The utility model provides an electromagnetic protection subassembly of hundred million net twines of a section can effectually carry out powerful pulse protection to the net twine, and response time reaches the nanosecond rank to it is low to postpone, does not have the packet loss phenomenon.
(2) The utility model discloses a first order gas discharge tube can effectively increase protector's power capacity, and the TVS array of second level can protect accurately, improves effect speed. And simultaneously, the utility model discloses filter network has still been added, has carried out fine suppression to the electromagnetic pulse of stop band, consequently can reduce the peak and reveal the phenomenon, has promoted protection efficiency greatly.
(3) The utility model discloses utilize devices such as gas discharge tube, TVS array, common mode inductance, resistance, electric capacity to constitute filter circuit and two-stage bleeder circuit, electromagnetic pulse outside the passband can be protected with filter circuit, and electromagnetic pulse in the passband protects through two-stage bleeder circuit, can be with the voltage amplitude ten thousand volts, response speed 1 nanosecond's transient state electromagnetic pulse control at safe level, compare in other product greatly reduced the influence that the peak was revealed.
(4) The utility model discloses still design supporting metallic shield cavity and cavity apron with it, can provide good shielding effect for this protection circuit, prevent that electromagnetic pulse from increasing new coupling route, can be used for fields such as sensitive equipment protection, electromagnetic pulse protection.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention;
fig. 2 is a structural diagram of the metal shielding cavity of the present invention, wherein (a) is a schematic diagram of a cover plate and (b) is a schematic diagram of a base of the shielding cavity;
wherein, J1-input interface; j2-output interface; u1-a first TVS array; u2-a second TVS array; 1-shielding a cavity base; 2-a rectangular opening; 3-cover plate; 4-a circuit board.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Example 1:
referring to fig. 1, a hundred-megabyte network cable electromagnetic protection circuit includes an input interface J1 and an output interface J2, two pairs of differential signal lines are respectively protected by two protection units between the input interface J1 and the output interface J2, the protection units do not work for normal network cable signals, and mainly deal with the damage of electromagnetic pulses, which are all from left to right (from left to right in fig. 1). Specifically, the first protection unit comprises a gas discharge tube V1, a resistor R2, a first TVS array U1, a common mode inductor L2, a common mode inductor L3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5 and a capacitor C6, wherein a first end and a second end of the gas discharge tube V1 are respectively connected to a pin 1 and a pin 2 of an input interface J1; the resistor R1 is connected with a first end of the gas discharge tube V1, a first end of the resistor R2 is connected with a second end of the gas discharge tube V1, a second end of the resistor R1 is connected with a first end of the first TVS array U1, a second end of the resistor R2 is connected with a fourth end of the first TVS array U1, a first end and a second end of the common mode inductor L1 are respectively connected with a fifth end and an eighth end of the first TVS array U1, a first end of the capacitor C1 is respectively connected with a third end of the common mode inductor L1 and a first end of the common mode inductor L2, a first end of the capacitor C2 is respectively connected with a fourth end of the common mode inductor L1 and a second end of the common mode inductor L2, a first end of the capacitor C3 is respectively connected with a third end of the common mode inductor L2 and a first end of the common mode inductor L3, a first end of the capacitor C4 is respectively connected with a fourth end of the common mode inductor L2 and a second end of the common mode inductor L3, a first end of the capacitor C5 is connected with a pin 1 of the output interface J2, and a first end of the capacitor C6 is connected with a pin 2 of the output interface J2; a third end of the gas discharge tube V1 is grounded, a second end, a third end, a sixth end and a seventh end of the first TVS array U1 are grounded, and second ends of the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C5 and the capacitor C6 are grounded;
the second protection unit comprises a gas discharge tube V2, a resistor R3, a resistor R4, a second TVS array U2, a common mode inductor L4, a common mode inductor L5, a common mode inductor L6, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11 and a capacitor C12, wherein the first end and the second end of the gas discharge tube V2 are respectively connected with a pin 3 and a pin 6 of an input interface J1; the resistor R3 is connected to a first end of the gas discharge tube V2, a first end of the resistor R4 is connected to a second end of the gas discharge tube V2, a second end of the resistor R3 is connected to a first end of the second TVS array U2, a second end of the resistor R4 is connected to a fourth end of the second TVS array U2, a first end and a second end of the common mode inductor L4 are respectively connected to a fifth end and an eighth end of the second TVS array U2, a first end of the capacitor C7 is respectively connected to a third end of the common mode inductor L4 and a first end of the common mode inductor L5, a first end of the capacitor C8 is respectively connected to a fourth end of the common mode inductor L4 and a second end of the common mode inductor L5, a first end of the capacitor C9 is respectively connected to a third end of the common mode inductor L5 and a first end of the common mode inductor L6, a first end of the capacitor C10 is respectively connected to a fourth end of the common mode inductor L5 and a second end of the common mode inductor L6, a first end of the capacitor C11 is connected to a pin 3 of the output interface J2, and a first end of the capacitor C12 is connected to a pin 6 of the output interface J2; the third end of the gas discharge tube V2 is grounded, the second end, the third end, the sixth end and the seventh end of the second TVS array U2 are grounded, and the second ends of the capacitor C7, the capacitor C8, the capacitor C9, the capacitor C10, the capacitor C11 and the capacitor C12 are grounded.
The utility model discloses a gas discharge tube of first order can effectively increase protection circuit's power capacity, and the TVS array of second level can protect accurately, improves effect speed. And simultaneously, the utility model discloses still add filter network, carried out fine suppression to the electromagnetic pulse of stop band, consequently can reduce the peak and reveal the phenomenon, promoted protection efficiency greatly. The utility model discloses by LC filter circuit (common mode inductance L1, electric capacity C1 and electric capacity C2; common mode inductance L2, electric capacity C3 and electric capacity C4; common mode inductance L3, electric capacity C5 and electric capacity C6 and common mode inductance L4, electric capacity C7 and electric capacity C8; common mode inductance L5, electric capacity C9 and electric capacity C10; common mode inductance L6, electric capacity C11 and electric capacity C12) and bleeder device (gas discharge tube V1, first TVS array U1; gas discharge tube V2, second TVS array U2) are constituteed, wherein the bleeder device protects low frequency high power interference, filter circuit protects high frequency interference, add resistance (resistance R1 and resistance R2) simultaneously and absorb reflection signal, guarantee the integrality of signal.
Further, the gas discharge tubes V1 and V2 are plug-in gas discharge tubes.
Further, the resistor R1, the resistor R2, the resistor R3, and the resistor R4 are thin film resistors.
Further, the first TVS array U1 and the second TVS array U2 are miniaturized labeled TVS arrays.
Further, the common mode inductor L1, the common mode inductor L2, the common mode inductor L3, the common mode inductor L4, the common mode inductor L5, and the common mode inductor L6 are patch common mode inductors.
Furthermore, the capacitors C1-C12 are multilayer ceramic dielectric chip capacitors.
Example 2:
on the basis of embodiment 1, as shown in fig. 2, a hundred mega network cable electromagnetic protection assembly includes a shielding cavity base 1, a cover plate 3 and a circuit board 4, wherein the shielding cavity base 1 and the cover plate 3 are fastened by screws to form a metal shielding cavity, the circuit board 4 is disposed in the metal shielding cavity, and the hundred mega network cable electromagnetic protection circuit is disposed on the circuit board 4.
Four bosses used for installing and fixing the circuit board 4 are arranged on the shielding cavity base 1, and metallized through holes are formed in the circuit board 4 and used for being fixed with the shielding cavity base 1.
Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are merely preferred embodiments of the present invention, it is to be understood that the present invention is not limited thereto, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.
Claims (4)
1. The hundred-megabyte network cable electromagnetic protection circuit is characterized by comprising an input interface and an output interface, wherein two pairs of differential signal lines are respectively protected by two same protection units between the input interface and the output interface, each protection unit comprises a gas discharge tube V1, a resistor R2, a TVS array, a common-mode inductor L1, a common-mode inductor L2, a common-mode inductor L3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5 and a capacitor C6, and a first end and a second end of the gas discharge tube V1 are respectively connected with two pins of the input interface; the resistor R1 is connected with a first end of the gas discharge tube V1, a first end of the resistor R2 is connected with a second end of the gas discharge tube V1, a second end of the resistor R1 is connected with a first end of the TVS array, a second end of the resistor R2 is connected with a fourth end of the TVS array, the first end and the second end of the common-mode inductor L1 are respectively connected with a fifth end and an eighth end of the TVS array, the first end of the capacitor C1 is respectively connected with a third end of the common-mode inductor L1 and a first end of the common-mode inductor L2, the first end of the capacitor C2 is respectively connected with a fourth end of the common-mode inductor L1 and a second end of the common-mode inductor L2, the first end of the capacitor C3 is respectively connected with a third end of the common-mode inductor L2 and a first end of the common-mode inductor L3, the first end of the capacitor C4 is respectively connected with a fourth end of the common-mode inductor L2 and a second end of the common-mode inductor L3, the first end of the capacitor C5 is connected with another pin of the output interface; the third end of the gas discharge tube V1 is grounded, the second end, the third end, the sixth end and the seventh end of the TVS array are grounded, and the second ends of the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C5 and the capacitor C6 are grounded.
2. A hundred million net twine electromagnetic protection subassembly characterized by, including shielding cavity base, apron and circuit board, shielding cavity base and apron pass through screw fastening and form the metal shielding cavity, the circuit board is arranged in the metal shielding cavity, a hundred million net twine electromagnetic protection circuit of claim 1 sets up on the circuit board.
3. The hundreds of millions of network cable electromagnetic protection assemblies of claim 2, wherein the metal shielding cavity is provided with rectangular openings on two sides for installing network cable interfaces.
4. The electromagnetic protection assembly for the hundred mega network cable according to claim 2, wherein four bosses for mounting and fixing a circuit board are arranged on the shielding cavity base, and a metalized through hole is arranged on the circuit board and used for being fixed with the shielding cavity base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222296585.9U CN217769486U (en) | 2022-08-31 | 2022-08-31 | Hundred million net twine electromagnetic protection circuit and protection component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222296585.9U CN217769486U (en) | 2022-08-31 | 2022-08-31 | Hundred million net twine electromagnetic protection circuit and protection component |
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| Publication Number | Publication Date |
|---|---|
| CN217769486U true CN217769486U (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222296585.9U Active CN217769486U (en) | 2022-08-31 | 2022-08-31 | Hundred million net twine electromagnetic protection circuit and protection component |
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| Country | Link |
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| CN (1) | CN217769486U (en) |
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2022
- 2022-08-31 CN CN202222296585.9U patent/CN217769486U/en active Active
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