Compact high-voltage large-current gas switch triggered by weak laser, device and Marx driving source

Abstract

The invention belongs to the field of high-voltage large-current gas switches, and particularly relates to a compact high-voltage large-current gas switch triggered by weak laser, a device and a Marx driving source. The technical problems that an existing trigger switch comprises three electrodes, a trigger loop, a photoconductive switch trigger light path and other complex parts, the structure is not compact enough, and the Marx driving source application requirement is difficult to meet are mainly solved. The gas switch comprises a high-voltage electrode, a low-voltage electrode, a trigger electrode, a supporting insulator, an insulating cover, a reversal element, a photoconductive switch and an energy transmission optical fiber. By adopting the innovative structural design, the compact assembly of the three-electrode gas switch, the photoconductive switch, the reversing element and other parts is realized, and the gas switch has the characteristics of compact structure, convenience in assembly and the like.

Description

Technical Field

[0001] The present invention relates to a high-voltage and high-current gas switch, and more particularly to a compact high-voltage and high-current gas switch triggered by weak laser, a device and a Marx driver source. Background Art

[0002] The high-voltage and high-current gas switch is an important component of the high-power Marx driver source, and its working stability and synchronization are of great significance to the stable operation of the driver source. In addition, in recent years, in order to ensure good output waveforms, the industry has been continuously increasing the requirements for the compactness of the Marx driver source. How to achieve the compactness of the Marx driver source is an important research topic in the field, and the compact design of the gas switch is an important aspect among them.

[0003] Currently, commonly used gas switches include laser-triggered gas switches and electric-triggered gas switches, etc. Laser-triggered gas switches are difficult to be applied in Marx driver sources with high compactness requirements due to the high energy requirements of lasers and the complex optical paths. The ground potential of electric-triggered gas switches cannot be floating, and the triggering ability is weak when outputting fast-front pulses. If it is used as the triggering switch of the Marx driver source, problems such as the potential rise at the output end of the triggering switch causing insulation failure and the difficulty in achieving synchronous conduction between multi-stage triggering switches are likely to occur, which is not conducive to the rapid establishment and stable operation of the Marx driver source.

[0004] Chinese Patent ZL202211041621.5 discloses a repetitive frequency gas switch triggered by weak laser energy and its implementation method. This gas switch has the advantages of strong triggering ability, floating ground potential, and optical isolation between the triggering switch and the low-voltage triggering circuit. If it is used as the triggering switch of the Marx driver source, it is expected to achieve the synchronous and stable operation of the Marx driver source. However, the above-mentioned triggering switch includes complex components such as three electrodes, a triggering circuit, and an optical path for triggering the photoconductive switch. If it is applied as the triggering switch of the Marx driver source, there are certain difficulties in the compact design.

[0005] In summary, the high-voltage repetitive frequency gas switch triggered by weak laser energy, as the triggering switch of the Marx driver source, is expected to achieve the synchronous and stable operation of the Marx driver source. However, due to the special requirements of the Marx driver source in terms of structural compactness, it poses relatively high requirements for the compact design of the gas switch. Summary of the Invention

[0006] The object of the present invention is to solve the technical problem that the existing triggering switch has a non-compact structure and is difficult to meet the application requirements of the Marx driver source due to complex components such as three electrodes, a triggering circuit, and an optical path for triggering the photoconductive switch, and to provide a compact high-voltage and high-current gas switch triggered by weak laser, a device and a Marx driver source.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] A compact high-voltage and high-current gas switch triggered by weak laser, which is characterized in that:

[0009] It includes a high-voltage electrode, a low-voltage electrode, a trigger electrode, a support insulator, an insulating cover, a reversal element, an optical waveguide switch, and an energy transmission optical fiber;

[0010] Both the high-voltage electrode and the low-voltage electrode are of annular structures, and their inner sides are respectively installed at the outer edges of both ends of the support insulator;

[0011] The insulating cover is sleeved on the outer sides of the high-voltage electrode and the low-voltage electrode;

[0012] A sealed gas working space is formed by the sides of the high-voltage electrode and the low-voltage electrode close to each other, the inner peripheral surface of the insulating cover, and the outer peripheral surface of the support insulator;

[0013] A first installation groove extending circumferentially is provided on the outer peripheral surface of the support insulator. The trigger electrode is installed in the first installation groove, and its outer end extends out of the first installation groove and is placed in the gas working space; an installation through hole is provided axially in the support insulator, and the inner end of the trigger electrode passes through the inner peripheral surface of the support insulator and is placed in the installation through hole;

[0014] A second installation groove extending circumferentially and a third installation groove extending axially are provided on the end surface of the support insulator close to the low-voltage electrode, and the second installation groove and the third installation groove are communicated with each other;

[0015] The reversal element is installed in the second installation groove, and one end of it is connected to the low-voltage electrode; the optical waveguide switch is installed in the third installation groove and includes an optical waveguide base body, and a high-voltage pole and a low-voltage pole respectively installed at both ends of the optical waveguide base body; the high-voltage pole is located on the side of the support insulator close to the low-voltage electrode and is connected to the other end of the reversal element, and the low-voltage pole is connected to the inner end of the trigger electrode;

[0016] The output end of the energy transmission optical fiber is connected to the optical waveguide base body of the optical waveguide switch, and the input end is connected to an external laser for transmitting the laser output by the external laser to the optical waveguide base body.

[0017] Further, the number of trigger electrodes is N, and N>1;

[0018] N first installation grooves are provided on the outer peripheral surface of the support insulator, the N first installation grooves are evenly distributed circumferentially, and the N trigger electrodes are respectively installed in the N first installation grooves, and their inner ends all pass through the inner peripheral surface of the support insulator and are placed in the installation through hole;

[0019] The inner ends of the N trigger electrodes are connected to each other.

[0020] Furthermore, the inner ends of the N trigger electrodes are interconnected through a connecting member; the connecting member is connected to the low-voltage electrode through a connecting wire.

[0021] Furthermore, the trigger electrode includes a sector-shaped ring plate and a connecting plate with one end mounted on the inner side of the sector-shaped ring plate;

[0022] The outer radius of the sector-shaped ring plate is greater than the radius of the support insulator, and the outer peripheral surface of the sector-shaped ring plate serves as the outer end of the trigger electrode and is placed in the gas working space;

[0023] The other end of the connecting plate serves as the inner end of the trigger electrode and is connected to the low-voltage electrode.

[0024] Furthermore, the optical waveguide substrate is of a cuboid structure, and the high-voltage electrode and the low-voltage electrode are respectively mounted at both ends of the optical waveguide substrate along the length direction;

[0025] The energy transmission optical fiber includes a cylindrical section and a frustum section;

[0026] One end of the cylindrical section serves as the input end of the energy transmission optical fiber, and its diameter is adapted to the size of the laser light plate output by the external laser, and the other end is connected to the small end of the frustum section;

[0027] The large end of the frustum section serves as the output end of the energy transmission optical fiber and is connected to the optical waveguide substrate, and its cross-section is adapted to the cross-section of the optical waveguide substrate.

[0028] Furthermore, the high-voltage electrode and the low-voltage electrode have the same structure and both include an annular plate and a resilient ring located on one end face of the annular plate;

[0029] The inner sides of the annular plates of the high-voltage electrode and the low-voltage electrode are respectively mounted at the outer edges of two opposite end faces of the support insulator;

[0030] The resilient rings of the high-voltage electrode and the low-voltage electrode are arranged oppositely, and there is a gap between the two, and the outer end of the trigger electrode is arranged facing the gap.

[0031] Furthermore, annular grooves are respectively arranged at the outer edges of both ends of the support insulator and at both ends of the inner peripheral surface of the insulating cover, and the depth of the annular groove is adapted to the thickness of the annular plates of the high-voltage electrode and the low-voltage electrode;

[0032] The inner sides of the annular plates of the high-voltage electrode and the low-voltage electrode are respectively mounted in the two annular grooves of the support insulator, and the outer sides are respectively mounted in the two annular grooves of the insulating cover.

[0033] Furthermore, the second installation groove is an arc-shaped groove, and the inversion element is an inversion inductor or an inversion resistor.

[0034] The present invention also provides a compact high-voltage and high-current gas switch triggered by weak laser, which is characterized in that: it includes the aforementioned compact high-voltage and high-current gas switch triggered by weak laser, and a laser; the laser is used to output laser and trigger the photoconductive matrix to conduct through an energy transmission optical fiber.

[0035] Meanwhile, the present invention also provides a Marx driver, which includes a multi-stage trigger switch, and is characterized in that: the trigger switch is the aforementioned compact high-voltage and high-current gas switch triggered by weak laser.

[0036] The beneficial effects of the present invention are as follows:

[0037] 1. The present invention adopts an innovative structural design, solves the compact assembly of components such as three-electrode gas switches, photoconductive switches and inversion elements, and has the characteristics of compact structure and convenient assembly.

[0038] 2. The trigger gas switch of the present invention can be used as a multi-stage trigger switch of the Marx driver. Due to the compact design of the present invention, the potential differences between the inversion element, the photoconductive switch, the high-voltage electrode, the low-voltage electrode and the trigger electrode are relatively constant. Even during the establishment of the Marx driver, although the potential of the subsequent-stage trigger gas switch will continuously increase as the previous-stage trigger switch conducts, it will not cause damage to components such as the photoconductive switch and isolation inductor of the compact trigger gas switch of the present invention due to the enhanced electric field, thus increasing the reliability of the trigger switch of the Marx driver. Brief Description of the Drawings

[0039] Figure 1 is a cross-sectional view of an embodiment of the compact high-voltage and high-current gas switch triggered by weak laser of the present invention;

[0040] Figure 2 is a schematic structural diagram of the high-voltage electrode in an embodiment of the compact high-voltage and high-current gas switch triggered by weak laser of the present invention;

[0041] Figure 3 is a schematic structural diagram of the low-voltage electrode in an embodiment of the compact high-voltage and high-current gas switch triggered by weak laser of the present invention;

[0042] Figure 4 is a schematic structural diagram of the trigger electrode in an embodiment of the compact high-voltage and high-current gas switch triggered by weak laser of the present invention;

[0043] Figure 5 is a schematic structural diagram of the support insulator in an embodiment of the compact high-voltage and high-current gas switch triggered by weak laser of the present invention;

[0044] Figure 6 is a schematic structural diagram of the connecting member in an embodiment of the compact high-voltage and high-current gas switch triggered by weak laser of the present invention;

[0045] Figure 7 It is a schematic structural diagram of an insulating cover in an embodiment of a compact high-voltage and high-current gas switch triggered by weak laser in the present invention;

[0046] Figure 8 It is a schematic structural diagram of an inversion element in an embodiment of a compact high-voltage and high-current gas switch triggered by weak laser in the present invention;

[0047] Figure 9 It is a schematic structural diagram of an optical waveguide switch in an embodiment of a compact high-voltage and high-current gas switch triggered by weak laser in the present invention;

[0048] Figure 10 It is a schematic structural diagram of an energy transmission optical fiber in an embodiment of a compact high-voltage and high-current gas switch triggered by weak laser in the present invention.

[0049] Explanation of reference numerals in the drawings: 1 - high-voltage electrode, 2 - low-voltage electrode, 3 - trigger electrode, 4 - support insulator, 5 - connecting piece, 6 - insulating cover, 7 - inversion element, 8 - optical waveguide switch, 9 - energy transmission optical fiber, 10 - laser, 11 - annular plate, 12 - flexible ring, 13 - sector-shaped annular plate, 14 - connecting plate, 15 - first installation groove, 16 - second installation groove, 17 - third installation groove, 18 - optical waveguide base body, 19 - high-voltage pole, 20 - low-voltage pole, 21 - frustum section, 22 - cylindrical section. Detailed implementation manners

[0050] To make the objectives, advantages, and features of the present invention clearer, the following further elaborates in detail on a weak-laser-triggered compact high-voltage and high-current gas switch, device, and Marx driver source proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. According to the following specific implementation manners, the advantages and features of the present invention will be clearer. It should be noted that: the accompanying drawings are all in a very simplified form and use non-precise scales, only for conveniently and clearly assisting in explaining the objectives of the embodiments of the present invention; secondly, the structures shown in the accompanying drawings are often part of the actual structures.

[0051] See Figure 1 , an embodiment of a weak-laser-triggered compact high-voltage and high-current gas switch device mainly includes parts such as a high-voltage electrode 1, a low-voltage electrode 2, a trigger electrode 3, a support insulator 4, a connecting piece 5, an insulating cover 6, an inversion element 7, an optical waveguide switch 8, an energy transmission optical fiber 9, and a laser 10.

[0052] Attached Figure 1 The specific structure of the high-voltage electrode 1 shown is as Figure 2 shown, its material is metal, and it is composed of an annular plate 11 and a flexible ring 12 combined together. The flexible ring 12 is on one (left) side of the annular plate 11, and the end is rounded.

[0053] As shown in the attached Figure 3As shown, the material of the low-voltage electrode 2 is metal, which is also composed of a ring plate 11 and a flexible ring 12. However, during installation, the flexible ring 12 is located on the other (right) side of the ring plate 11.

[0054] As shown in the Figure 4 attachment, the material of the trigger electrode 3 is also metal. Its main structure is a sector-shaped ring plate 13 with the edges of the sector ring 13 rounded. At the midpoint of the inner arc of the sector ring 13, a long connecting plate 14 extends inward along the normal direction of the arc surface. The sector ring plate 13 and the connecting plate 14 have the same thickness.

[0055] As shown in the Figure 5 attachment, the material of the support insulator 4 is an insulating material with high mechanical strength, and its structure is a circumferential ring structure with a certain thickness. At the axial midpoint position of the support insulator 4, first mounting grooves 15 leading from the outer ring surface to the inner ring surface are uniformly designed along the circumferential direction (two are evenly distributed in the figure, and one or more are also possible). The first mounting grooves 15 are in a tight fit relationship with the trigger electrode 3 in terms of dimensions.

[0056] As shown in the Figure 7 attachment, the material of the insulating cover 6 is the same as that of the support insulator 4, and its structure is also a coaxial ring. Its axial length is similar to that of the support insulator 4, and the inner ring diameter is larger than the outer ring diameter of the support insulator 4.

[0057] As shown in the Figure 1 attachment, the high-voltage electrode 1, low-voltage electrode 2, trigger electrode 3, support insulator 4, and insulating cover 6 are tightly fitted together to form the main body of the three-electrode gas switch.

[0058] During assembly, the trigger electrode 3 is inserted and fixed to the support insulator 4 from the outside to the inside through the first mounting grooves 15 on the support insulator 4. Moreover, the outer arc surface of the sector ring plate 13 of the trigger electrode 3 protrudes to the outside of the outer ring surface of the support insulator 4, and together with the high-voltage electrode 1 and low-voltage electrode 2 installed on the left and right sides of the support insulator 4, they form the three electrodes of the gas switch; while the end of the connecting plate 14 of the trigger electrode 3 pierces out from the inner ring of the support insulator, facilitating connection to the trigger circuit composed of the inversion element 7 and the optical switch 8. To ensure that the two trigger electrodes 3 evenly distributed circumferentially are at the same potential, as shown in the Figure 6The trigger electrode connector 5 made of the shown metal material connects the ends of the connecting plates 14 of the two trigger electrodes 3 inside the inner hole of the support insulator 4 to achieve good electrical contact. During installation, the insulating cover 6 is coaxially located outside the support insulator 4 and is fixed in position by cooperating with the high-voltage electrode 1 and the low-voltage electrode 2. Among them, the high-voltage electrode 1 is cooperatively installed on one (right) side of the axis of the support insulator 4 and the insulating cover 6, and the low-voltage electrode 2 is cooperatively installed on the other (left) side of the axis. Moreover, the resilient rings 12 of the high-voltage electrode 1 and the low-voltage electrode 2 are in a facing relationship. The high-voltage electrode 1, the low-voltage electrode 2, the support insulator 4, and the insulating cover 6 form a quasi-closed cavity, which is the working cavity of the gas switch. This can prevent the powdered products after the breakdown of the gas switch from spreading randomly within the entire device and affecting the insulation of other components outside the switch.

[0059] To achieve the compact installation of the inversion element 7, on the side where the support insulator 4 and the low-voltage electrode 2 are assembled, an arc-shaped second installation groove 16 with a radian of 270° is designed. The second installation groove 16 is radially located in the area between the inner ring of the low-voltage electrode 2 and the inner ring of the support insulator 4. The second installation groove 16 is used to place the inversion element 7. As shown in the appendix Figure 8 As shown, the inversion element 7 is an inversion inductor or an inversion resistor, which is a flexible structure. After being bent into an arc shape, it basically fills the 270° radian area. A long strip-shaped third installation groove 17 along the axis is provided at the starting end of the second installation groove 16 for placing the optical switch 8.

[0060] The used optical switch 8 is as shown in the appendix Figure 9 As shown, it is quasi-long strip-shaped and consists of an optical guide substrate 18, a high-voltage electrode 19, and a low-voltage electrode 20. The high-voltage electrode 19 is located at the radially outer end of the third installation groove 17, and the low-voltage electrode 20 is located at the radially inner end. The high-voltage electrode 19 is connected to the starting end of the inversion element 7, and the low-voltage electrode 20 is connected to the connector 5 through a connecting wire. The end of the inversion element 7 is connected to the low-voltage electrode 2. A through hole is provided at the position where the third installation groove 17 in the support insulator 4 faces the right side surface of the optical guide substrate 18. This through hole is connected to the third installation groove 17, so that the input end of the energy transmission optical fiber 9 passes through the support insulator 4 from right to left through this through hole. After injecting the laser energy through the output end, it is transmitted to the surface of the optical guide substrate 18 to achieve its trigger conduction. The used energy transmission optical fiber 9 is as Figure 10 shown, which is an existing non-standard product. Its input end is a cylindrical section 23, which matches the incident light spot of the laser 10, so that the laser energy is evenly transmitted to the end. While the output end is a frustum of a pyramid section 22. The input end to the output end of the energy transmission optical fiber 9 is wedge-shaped from a circular cross-section to a square cross-section by using the tapering process, which matches the cross-section of the optical guide substrate 18 while ensuring the transmission efficiency.

[0061] Through a structurally compact design, the inversion element 7 of the trigger gas switch, the photoconductive switch 8, etc. are located near the high-voltage electrode 1, the low-voltage electrode 2, and the trigger electrode 3. During the operation of the switch, the potential difference between the above-mentioned components is relatively constant. Even if the potential of the switch electrode rises significantly, the electric field on the vulnerable components such as the inversion element 7 and the photoconductive switch 8 will not increase significantly. Thus, the invented trigger gas switch can be used as a multi-stage trigger switch for the Marx driver source. Even during the establishment of the Marx driver source, the potential of the subsequent trigger gas switch will continuously increase as the previous trigger switch conducts. Due to the special advantages of the invented compact trigger gas switch, components such as the photoconductive switch 8 and the isolation inductor 7 will not be damaged due to the enhancement of the high electric field. More importantly, the simultaneous operation of multiple trigger switches can be controlled by a fiber optic cable with one input and multiple outputs, which is simple and convenient.

Claims

1. A compact high-voltage and high-current gas switch triggered by a weak laser, characterized in that: It comprises a high voltage electrode (1), a low voltage electrode (2), a trigger electrode (3), a supporting insulator (4), an insulating cover (6), a reversing element (7), a photoconductive switch (8) and an energy transmission optical fiber (9); The high-voltage electrode (1) and the low-voltage electrode (2) are both annular structures, and the inner sides thereof are respectively mounted on the outer edges of both ends of the supporting insulator (4); The insulating cover (6) is sleeved on the outer sides of the high-voltage electrode (1) and the low-voltage electrode (2); The side where the high-voltage electrode (1) and the low-voltage electrode (2) are close to each other, the inner circumference of the insulating cover (6) and the outer circumference of the supporting insulator (4) form a sealed gas working space; A first mounting groove (15) extending in the circumferential direction is provided on the outer circumferential surface of the support insulator (4); the trigger electrode (3) is installed in the first mounting groove (15), and its outer end extends out of the first mounting groove (15) and is placed in the gas working space; the support insulator (4) is provided with a mounting through hole along the axial direction, and the inner end of the trigger electrode (3) passes through the inner circumferential surface of the support insulator (4) and is placed in the mounting through hole; A second mounting groove (16) extending in the circumferential direction and a third mounting groove (17) extending in the axial direction are arranged on the end surface of the support insulator (4) close to the low-voltage electrode (2), and the second mounting groove (16) and the third mounting groove (17) are connected to each other; The reversing element (7) is installed in the second installation groove (16), and one end of the reversing element (7) is connected to the low-voltage electrode (2); the photoconductive switch (8) is installed in the third installation groove (17), and the photoconductive switch (8) comprises a photoconductive substrate (18), and a high-voltage electrode (19) and a low-voltage electrode (20) respectively installed at two ends of the photoconductive substrate (18); the high-voltage electrode (19) is located on a side of the supporting insulator (4) close to the low-voltage electrode (2), and is connected to the other end of the reversing element (7), and the low-voltage electrode (20) is connected to the inner end of the trigger electrode (3); The output end of the energy transmission optical fiber (9) is connected to the optical substrate (18) of the optical switch (8), and the input end is connected to an external laser (10), so as to transmit the laser light output by the external laser (10) to the optical substrate (18).

2. The compact high-voltage and high-current gas switch triggered by weak laser according to claim 1 is characterized in that: The number of the trigger electrodes (3) is N, where N>1; The outer circumferential surface of the support insulator (4) is provided with N first installation grooves (15), the N first installation grooves (15) are evenly distributed along the circumferential direction, and the N trigger electrodes (3) are respectively installed in the N first installation grooves (15), and the inner ends thereof respectively pass through the inner circumferential surface of the support insulator (4) and are placed in the installation through hole; The inner ends of the N trigger electrodes (3) are connected to each other.

3. The compact high-voltage and high-current gas switch triggered by weak laser according to claim 2 is characterized in that: The inner ends of the N trigger electrodes (3) are connected to each other via a connecting piece (5); the connecting piece (5) is connected to the low voltage pole (20) via a connecting line.

4. The compact high-voltage and high-current gas switch triggered by weak laser according to any one of claims 1 to 3, characterized in that: The trigger electrode (3) comprises a sector-shaped ring plate (13) and a connecting plate (14) with one end mounted on the inner side of the sector-shaped ring plate (13); The outer radius of the sector-shaped ring plate (13) is greater than the radius of the supporting insulator (4); the outer peripheral surface of the sector-shaped ring plate (13) serves as the outer end of the trigger electrode (3) and is placed in the gas working space; The other end of the connecting plate (14) serves as the inner end of the trigger electrode (3) and is connected to the low voltage pole (20).

5. The compact high-voltage and high-current gas switch triggered by weak laser according to claim 1, characterized in that: The light-conducting base (18) is a rectangular parallelepiped structure, and the high-voltage electrode (19) and the low-voltage electrode (20) are respectively installed at two ends of the light-conducting base (18) along the length direction; The energy transmission optical fiber (9) comprises a cylindrical section (22) and a quadrangular pyramid section (21); One end of the cylindrical section (22) serves as the input end of the energy transmission optical fiber (9), and its diameter is adapted to the size of the laser light plate output by the external laser (10), and the other end is connected to the small end of the quadrangular pyramid section (21); The large end of the quadrangular pyramid segment (21) serves as the output end of the energy transmission optical fiber (9), is connected to the optical fiber matrix (18), and its cross section is adapted to the cross section of the optical fiber matrix (18).

6. The compact high-voltage and high-current gas switch triggered by weak laser according to claim 5, characterized in that: The high-voltage electrode (1) and the low-voltage electrode (2) have the same structure, and both comprise an annular plate (11) and a tough ring (12) located on one end surface of the annular plate (11); The inner sides of the annular plates (11) of the high voltage electrode (1) and the low voltage electrode (2) are respectively mounted on the outer edges of both ends of the supporting insulator (4); The tough rings (12) of the high-voltage electrode (1) and the low-voltage electrode (2) are arranged opposite to each other, with a gap provided between them, and the outer end of the trigger electrode (3) is arranged facing the gap.

7. The compact high-voltage and high-current gas switch triggered by weak laser according to claim 6, characterized in that: Annular grooves are respectively provided at the outer edges of both ends of the support insulator (4) and at both ends of the inner circumference of the insulating cover (6), and the depth of the annular grooves is adapted to the thickness of the annular plates (11) of the high-voltage electrode (1) and the low-voltage electrode (2); The inner sides of the annular plates (11) of the high-voltage electrode (1) and the low-voltage electrode (2) are respectively installed in two annular grooves of the support insulator (4), and the outer sides are respectively installed in two annular grooves of the insulation cover (6).

8. The compact high-voltage and high-current gas switch triggered by weak laser according to claim 7, characterized in that: The inversion element (7) is an inversion inductor or an inversion resistor.

9. A low-voltage, high-current gas switch device triggered by a weak laser, characterized in that: A compact high-voltage and high-current gas switch triggered by weak laser according to any one of claims 1 to 8, and a laser (10); The laser (10) is used to output laser light and trigger the light-conducting matrix (18) to conduct through the energy transmission optical fiber (9).

10. A Marx drive source, comprising a multi-stage trigger switch; characterized in that: The trigger switch is a compact high-voltage and high-current gas switch triggered by a weak laser as described in any one of claims 1-8.

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