CN110611452A - Parameter-adjustable fast-rising leading edge pulse generator and working method - Google Patents
Parameter-adjustable fast-rising leading edge pulse generator and working method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000013307 optical fiber Substances 0.000 claims abstract description 26
- 238000004804 winding Methods 0.000 claims description 52
- 239000003990 capacitor Substances 0.000 claims description 31
- 238000002955 isolation Methods 0.000 claims description 14
- 230000000630 rising effect Effects 0.000 claims description 13
- 238000004146 energy storage Methods 0.000 claims description 9
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- 239000002159 nanocrystal Substances 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 239000003985 ceramic capacitor Substances 0.000 claims description 3
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- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 4
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- 238000005259 measurement Methods 0.000 description 2
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- H—ELECTRICITY
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- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/16—Toroidal transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
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Abstract
The invention provides a parameter-adjustable fast-rising leading edge pulse generator and a working method thereof, wherein the parameter-adjustable fast-rising leading edge pulse generator comprises the following steps: the FPGA controller signal sending end is connected with the optical fiber isolator signal receiving end, the optical fiber isolator signal sending end is connected with the Marx circuit signal receiving end, the FPGA controller control signal output end is connected with the Marx circuit control signal receiving end, and the Marx circuit working signal end is connected with the pulse transformer signal receiving end. The pulse generator is connected with the pulse transformer through the Marx circuit so as to form a pulse generating circuit.
Description
Technical Field
The invention relates to the field of pulse generation circuits, in particular to a parameter-adjustable fast-rising leading edge pulse generator and a working method.
Background
The pulse generator with adjustable parameters can be applied to the industries of industrial wastewater treatment, tumor treatment, national defense and military industry, material manufacturing and the like, is particularly applied to the treatment of industrial wastewater in the aspect of chemical engineering, and can greatly reduce the discharge of the industrial wastewater and improve the reutilization rate of water. According to measurement and calculation, the potential market demand of China's industrial wastewater treatment industry to high-voltage high-frequency solid-state pulse generator in 2020 is about 1000 hundred million yuan, and in the aspect of biological medicine industry, the high-voltage high-frequency solid-state pulse generator can be used for treating tumors and improving the cell fusion rate. According to measurement and calculation, the demand of the biomedical industry for high-voltage high-frequency solid-state pulse generators in 2022 is 1200 hundred million, in the military industry, the unit price of imported equipment is 3-5 times of the average price in China, in the material manufacturing industry, an applicator cannot manufacture a pulse source and a trigger switch manufacturer cannot produce a trigger pulse power supply under the background of interdisciplinary subjects, and moreover, most related enterprises have excessive research and development and production costs on the technology, so that the product price is higher. Particularly, in the field of trigger devices of vacuum trigger switches, there is no pulse generator which can stably complete the work, and it is therefore necessary for those skilled in the art to solve the corresponding technical problems.
Disclosure of Invention
The invention aims to at least solve the technical problems in the prior art, and particularly innovatively provides a parameter-adjustable fast-rising leading edge pulse generator and a working method.
In order to achieve the above object, the present invention provides a fast rising front edge pulse generator with adjustable parameters, comprising: the FPGA controller signal sending end is connected with the optical fiber isolator signal receiving end, the optical fiber isolator signal sending end is connected with the Marx circuit signal receiving end, the FPGA controller control signal output end is connected with the Marx circuit control signal receiving end, and the Marx circuit working signal end is connected with the pulse transformer signal receiving end. The pulse generator is connected with the pulse transformer through the Marx circuit so as to form a pulse generating circuit.
Preferably, the Marx circuit includes: the positive pole of a charging source is connected with one end of a charging resistor, the negative pole of the charging source is grounded, the other end of the charging resistor is connected with the positive pole of a first forward diode, the negative pole of the first forward diode is respectively connected with one end of a first capacitor and the collector of a first triode, the emitter of the first triode is respectively connected with the negative pole of a first fly-wheel diode and the other end of a second capacitor, the other end of the first capacitor is connected with the positive pole of the first fly-wheel diode, the base of the first triode is connected with the signal control end of a fiber isolator, the collector of the first triode is also connected with the positive pole of a second forward diode, the negative pole of the second forward diode is respectively connected with one end of a second capacitor and the collector of a second triode, the emitter of the second triode is connected with the negative pole of the.
Preferably, the optical fiber isolator includes: the power supply end of the logic gate driver is connected with the power supply end of the second power supply module.
Preferably, the pulse transformer includes a primary winding, a secondary winding, and a magnetic core.
Preferably, the primary winding and the secondary winding are wound coaxially.
Preferably, the primary winding and the secondary winding are wound in a primary-secondary side overlapping mode, and the secondary winding is wound in a single layer.
Preferably, the magnetic core is wound by spirally winding the nanocrystal core coil, and the external insulation is tightly wound by winding an insulating tape.
Preferably, the magnetic core adopts an annular closed structure made of a nanocrystalline alloy material.
Preferably, the signal generator is HFBR2412 TZ.
Preferably, the first power module and the second power module are H1505S.
The invention also discloses a working method of the adjustable fast rising leading edge pulse generator, which comprises the following steps:
s1, sending parameter control signals through the FPGA controller, and carrying out signal isolation operation through the optical fiber isolator;
s2, after signal isolation is carried out through the optical fiber isolator, signal input is carried out through a Marx circuit, and a Marx current sends a parameter control signal to the pulse transformer; the fast rising leading edge pulse generation signal is adjusted by parameter control.
Preferably, the S2 includes:
s2-1, winding a primary winding and a secondary winding of the pulse transformer in a coaxial mode; setting the turn ratio M to N of the primary winding and the secondary winding;
s2-2, setting the average magnetic permeability mu of the pulse transformer; residual magnetic induction Br; the magnetic induction intensity Bs is saturated, so that the pulse transformer keeps the output of high-amplitude and large-pulse-width pulse voltage, and meanwhile, the voltage output is carried out in an annular closed mode;
s2-3, the fiber isolator carries out electro-optic and photoelectric conversion on the pulse signal output by the FPGA controller through the signal generator, the power supply module and the logic gate driver chip, the No. 6 interface of the signal generator is connected with the voltage stabilizing capacitor and then grounded, the No. 2 interface of the signal generator is connected with the first voltage stabilizing resistor and then connected with the No. 6 interface of the signal generator in parallel and connected to the No. 4 interface of the first power supply module, the No. 2 interface of the signal generator is connected with the second voltage stabilizing resistor in series, a leading-out node is connected with the No. 2 interface of the logic gate driver, and other interfaces of the logic gate driver are grounded;
s2-4, the interface No. 2 of the first power supply module is connected with +5V high level, and the rest is grounded; the No. 1 and No. 8 interfaces of the logic gate driver are connected with the No. 4 interface of the second power module in parallel and grounded after being connected with the anode of the electrolytic capacitor and the ceramic capacitor, the No. 6 and No. 7 interfaces of the logic gate driver are output in parallel through a resistor Rg and output through the resistor Rg and R1, the interfaces of the rest logic gate drivers are grounded, the No. 1 interface of the second power module is connected with a +15V power supply, and the rest interfaces are grounded;
s2-5, the Marx circuit adopts a two-stage structure and is connected in parallel, and the energy storage capacitor of each stage adopts a high-voltage capacitor for storing energy; the current sharing is carried out through a plurality of triodes in parallel, wherein the conducting current direction of the triodes is consistent with the discharging current direction of the energy storage capacitor; the current flow direction of the fly-wheel diode is opposite to the flow direction of the charging current of the pulse transformer;
s2-6, forming a pulse transformer by spirally winding the nanocrystal core, the primary winding, the isolation layer, and the secondary winding.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the generator is based on the FPGA, and the FPGA can be controlled by a computer to control the solid-state switch, so that the discharge energy can be accurately regulated and controlled. The maximum pulse output voltage can be realized: 10kV, maximum output pulse width: 10 mus, the output parameter completely meets the triggering requirement of TVS: 5kV, 5 mus; the larger pulse and the higher trigger voltage provide enough trigger energy for triggering of the TVS, and the TVS can be reliably and effectively triggered for a long time.
The method has the advantages of low loss and high energy transmission efficiency: the annular closed magnetic core and the coaxial winding are adopted, the leakage inductance and the distributed capacitance of the loop are reduced, the loss is extremely low, and the energy transmission efficiency reaches 94.6%.
The rapid pulse fusion cage is fast in speed, can realize multiple applications, has the pulse rising front edge of only 160ns, has no overshoot phenomenon, and can be used for treating tumors, improving the cell fusion rate, preventing the state and the military industry and the like.
The whole process is operated by a computer, the solid-state switch is controlled by controlling the FPGA, the discharge energy is accurately adjusted by adjusting the input voltage, and the method is simple and convenient.
Fourth, green environmental protection: the high-voltage high-frequency solid pulse generator adopts electric energy, and cannot pollute the environment.
Fifthly, the method is ahead of China and abroad: compared with other trigger devices, the pulse transformer and the MOSFET solid-state switch are proposed firstly as the trigger device of the vacuum switch, the trigger signal with the amplitude of 5KV and the pulse width of 5us can be generated stably, the rising front edge is only 160ns, the conduction synchronism of the vacuum switch can be effectively guaranteed, the capacity loss caused by conduction dispersion is reduced, the maximum efficiency is as high as 94.6%, the conduction consistency of the switch can be adjusted through a program, the loss caused by dispersion is reduced, and the vacuum switch is in a leading position at home and abroad.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a circuit installation diagram of the present invention;
FIG. 2 is a circuit diagram of the present invention;
FIG. 3 is a schematic view of a fiber optic isolator according to the present invention;
FIG. 4 is a schematic diagram of a pulse generator bundling in accordance with the present invention;
fig. 5 is a flow chart of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1-4, the present invention discloses a parameter-adjustable fast-rising leading edge pulse generator, comprising: the FPGA controller signal sending end is connected with the optical fiber isolator signal receiving end, the optical fiber isolator signal sending end is connected with the Marx circuit signal receiving end, the FPGA controller control signal output end is connected with the Marx circuit control signal receiving end, and the Marx circuit working signal end is connected with the pulse transformer signal receiving end. The pulse generator is connected with the pulse transformer through the Marx circuit so as to form a pulse generating circuit.
The Marx circuit comprises: the positive pole of a charging source is connected with one end of a charging resistor, the negative pole of the charging source is grounded, the other end of the charging resistor is connected with the positive pole of a first forward diode, the negative pole of the first forward diode is respectively connected with one end of a first capacitor and the collector of a first triode, the emitter of the first triode is respectively connected with the negative pole of a first fly-wheel diode and the other end of a second capacitor, the other end of the first capacitor is connected with the positive pole of the first fly-wheel diode, the base of the first triode is connected with the signal control end of a fiber isolator, the collector of the first triode is also connected with the positive pole of a second forward diode, the negative pole of the second forward diode is respectively connected with one end of a second capacitor and the collector of a second triode, the emitter of the second triode is connected with the negative pole of the.
The optical fiber isolator includes: the power supply end of the logic gate driver is connected with the power supply end of the second power supply module.
The parameter-adjustable fast rising leading edge pulse generator comprises a pulse transformer, a charging power supply, a charging resistor, a Marx structure, a programmable gate array (FPGA) and a fiber isolator;
the pulse transformer comprises a primary winding, a secondary winding and a magnetic core;
the output ends of the pulse transformer and the secondary winding are used as the output end of the pulse generator;
the charging power supply, the charging resistor and the Marx structure are sequentially connected in series;
the output end of the Marx structure is the input end of the pulse transformer and the input end of the primary winding;
the Marx structure comprises two stages of Marx structures, wherein each stage comprises an energy storage capacitor, an IGBT module, a forward diode and a freewheeling diode;
the programmable gate array (FPGA) is used for generating a control signal;
the optical fiber isolator is used for realizing the electrical isolation between the control signal and the IGBT circuit module.
The primary winding and the secondary winding are wound in a coaxial mode.
The primary winding and the secondary winding are wound in an original side and secondary side overlapping mode, and the secondary winding is wound in a single layer.
The turn ratio of the primary winding to the secondary winding is M: N, wherein M: N is 1: 10.
The magnetic core is made of a nanocrystalline alloy material, the average magnetic conductivity mu is 30000, the residual magnetic induction Br is lower than 0.15T, the saturation magnetic induction Bs is 1.25T, the output of high-amplitude and large-pulse-width pulse voltage can be realized, and an annular closing mode is adopted.
The magnetic core is wound by spirally winding a nanocrystal core coiled material, and the external insulation is tightly wound by winding an insulating adhesive tape instead of sleeving a plastic shell.
The charging power supply adopts an east high-voltage module power supply and provides 0-1kV direct current output, and the maximum output current is 10 mA.
The resistance value of the charging resistor is 1 MOmega, and the withstand voltage value is 1 kV.
The Marx structure comprises two stages which are connected in parallel, and the energy storage capacitor of each stage is a 5 mu F high-voltage capacitor.
The IGBT module in the Marx structure adopts 4 MOSFET triodes to be connected in parallel for current sharing, and the on-off of the MOSFET is controlled through signals, so that the switching function is realized.
And the conducting current direction of the IGBT module in the Marx structure is consistent with the discharging current direction of the energy storage capacitor.
The current flow direction of the freewheeling diode in the Marx structure is opposite to the flow direction of the charging current of the pulse transformer so as to protect the switch, demagnetize the magnetic core and avoid saturation.
The Marx structure is combined with the pulse transformer, the output pulse amplitude is improved, the voltage withstand requirements on a power supply and related devices are reduced, the overall cost is reduced, meanwhile, the pulse transformer can effectively isolate a trigger source from a TVS main circuit, and the equipment safety is guaranteed.
The programmable gate array (FPGA) generates control signals, parameter visualization can be achieved, and pulse width, frequency and pulse number can be automatically adjusted.
The optical fiber isolator realizes the transmission of control signals by adopting optical fibers, controls the on-off of the IGBT after performing electro-optic conversion and photoelectric conversion on the control signals, effectively reduces the interference of a space complex electromagnetic field environment on trigger signals, and greatly enhances the anti-interference capability and signal synchronism.
As shown in fig. 5, the present invention also discloses a working method of the adjustable fast rising front edge pulse generator, which comprises the following steps:
s1, sending parameter control signals through the FPGA controller, and carrying out signal isolation operation through the optical fiber isolator;
s2, after signal isolation is carried out through the optical fiber isolator, signal input is carried out through a Marx circuit, and a Marx current sends a parameter control signal to the pulse transformer; the fast rising leading edge pulse generation signal is adjusted by parameter control.
The invention provides a method for realizing the maximum pulse output voltage: 10kV, maximum output pulse width: 10 mus, the fastest rising leading edge is only 160ns, and the output parameters completely meet the triggering requirements of TVS: 5kV, 5 mus; the larger pulse and the higher trigger voltage provide enough trigger energy for triggering of the TVS, and the TVS can be reliably and effectively triggered for a long time. And the external functional diagrams of the device are respectively an optical fiber interface, a signal wire, a voltage digital display and a voltage adjusting knob, wherein the optical fiber interface is connected with an optical fiber to play a role of isolation, the signal wire transmits a pulse signal, and the voltage adjusting knob is used for adjusting voltage and displaying the voltage on the display.
The most important innovation point of the invention is that the FPGA controller realizes the pulse generation signal of the fast rising front edge through reasonable circuit connection of the optical fiber isolator and the two power supply modules, and the optical fiber isolator performs photoelectric and photoelectric conversion on the pulse signal output by the FPGA through the HFBR2412TZ signal generator, the two H1505S power supply modules and the IXDN609 logic gate driver chip, thereby realizing the electrical isolation between the control signal and the MOSFET circuit module. The optical fiber can isolate high voltage, has high signal transmission speed, strong anti-interference capability and good synchronism, and meets the requirement on electrical isolation in the design of the invention, so the optical fiber is adopted to realize the transmission of control signals, and the control chip is controlled to amplify the signals after the electro-optical conversion and the photoelectric conversion are carried out on the control signals. In the photoelectric isolation circuit consisting of three chips, namely HFBR2412TZ, H1505S and IXDN609, an interface 6 of the HFBR2412TZ is grounded after being connected with a capacitor, an interface 2 is connected with a voltage stabilizing resistor and then is connected with an interface 6 in parallel and is connected to an interface 4 of the H1505S (U1), an interface 2 of the HFBR2412TZ leads out a node in front of a series resistor and is connected to an interface 2 of the LXDN609, and other interfaces are grounded. In which interface H1505S (U1) No. 2 is connected with +5V high level, and the rest is grounded. No. 1 and No. 8 interfaces of the IXDN609 are connected with a No. 4 interface phase of H1505S (U2), the phase is grounded after being connected with the anode of an electrolytic capacitor and a ceramic capacitor, No. 6 and No. 7 interfaces of the IXDN609 are connected with each other and output through a resistor Rg (output from a G port), output through a resistor Rg and R1 (output from an S port), and the other interfaces of the IXDN609 are grounded. Interface H1505S (U2) No. 1 is connected with +15V power supply, and the rest interfaces are grounded.
The Marx structure comprises two stages which are connected in parallel, and the energy storage capacitor of each stage is a 5 mu F high-voltage capacitor. The IGBT module adopts 4 MOSFETs to connect in parallel and flow equalize, and the signal controls the on-off of the MOSFETs to realize the function of switching. The conducting current direction of the IGBT module is consistent with the discharging current direction of the energy storage capacitor. The freewheeling diode has a current flow opposite to the pulse transformer charging current to protect the switch from saturation by demagnetizing the core.
The Marx structure is combined with the pulse transformer, the output pulse amplitude is improved, the voltage withstand requirements on a power supply and related devices are reduced, the overall cost is reduced, meanwhile, the pulse transformer can effectively isolate a trigger source from a TVS main circuit, and the equipment safety is guaranteed.
The pulse transformer adopts an annular closed magnetic core made of a nanocrystalline alloy material, the average magnetic permeability mu is 30000, the residual magnetic induction Br is lower than 0.15T, the saturation magnetic induction Bs is 1.25T, and the output of high-amplitude and large-pulse-width pulse voltage can be realized. The turn ratio of the primary winding to the secondary winding is 1:10, and the influence of stray parameters on output pulses is reduced to the maximum extent by winding in an original secondary side overlapping mode.
Wherein the spiral winding nanocrystal core, the primary winding, the isolation layer and the secondary winding form a pulse transformer body.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A parameter adjustable fast-rising leading edge pulse generator, comprising: the FPGA controller signal transmitting end is connected with the optical fiber isolator signal receiving end, the optical fiber isolator signal transmitting end is connected with the Marx circuit signal receiving end, the FPGA controller control signal output end is connected with the Marx circuit control signal receiving end, the Marx circuit working signal end is connected with the pulse transformer signal receiving end, and the Marx circuit is connected with the pulse transformer to form a pulse generating circuit.
2. The parametrically adjustable fast-rising front-edge pulse generator according to claim 1, wherein the Marx circuit comprises: the positive pole of a charging source is connected with one end of a charging resistor, the negative pole of the charging source is grounded, the other end of the charging resistor is connected with the positive pole of a first forward diode, the negative pole of the first forward diode is respectively connected with one end of a first capacitor and the collector of a first triode, the emitter of the first triode is respectively connected with the negative pole of a first fly-wheel diode and the other end of a second capacitor, the other end of the first capacitor is connected with the positive pole of the first fly-wheel diode, the base of the first triode is connected with the signal control end of a fiber isolator, the collector of the first triode is also connected with the positive pole of a second forward diode, the negative pole of the second forward diode is respectively connected with one end of a second capacitor and the collector of a second triode, the emitter of the second triode is connected with the negative pole of the.
3. The adjustable-parameter fast-rising leading edge pulse generator according to claim 1, wherein the fiber isolator comprises: the power supply end of the logic gate driver is connected with the power supply end of the second power supply module.
4. The adjustable-parameter fast-rising leading-edge pulse generator according to claim 1, wherein the pulse transformer comprises a primary winding, a secondary winding, and a magnetic core.
5. The adjustable-parameter fast-rising leading-edge pulse generator according to claim 4, wherein the primary winding and the secondary winding are coaxially wound.
6. The parameter adjustable fast-rising leading-edge pulse generator according to claim 4, wherein the primary winding and the secondary winding are wound in a primary-secondary overlapping manner, and the secondary winding is wound in a single layer.
7. The adjustable-parameter fast-rising leading-edge pulse generator according to claim 4, wherein the magnetic core is wound with a spirally-wound nanocrystal core coil, and the external insulation is tightly wound with an insulating tape.
8. The parameter tunable fast rising front pulse generator according to claim 7, wherein said magnetic core is an annular closed structure of nanocrystalline alloy material.
9. An adjustable working method of a fast rising leading edge pulse generator is characterized by comprising the following steps:
s1, sending parameter control signals through the FPGA controller, and carrying out signal isolation operation through the optical fiber isolator;
s2, after signal isolation is carried out through the optical fiber isolator, signal input is carried out through a Marx circuit, and a Marx current sends a parameter control signal to the pulse transformer; the fast rising leading edge pulse generation signal is adjusted by parameter control.
10. The method of claim 9, wherein said S2 comprises:
s2-1, winding a primary winding and a secondary winding of the pulse transformer in a coaxial mode; setting the turn ratio M to N of the primary winding and the secondary winding;
s2-2, setting the average magnetic permeability mu of the pulse transformer; residual magnetic induction Br; the magnetic induction intensity Bs is saturated, so that the pulse transformer keeps the output of high-amplitude and large-pulse-width pulse voltage, and meanwhile, the voltage output is carried out in an annular closed mode;
s2-3, the fiber isolator carries out electro-optic and photoelectric conversion on the pulse signal output by the FPGA controller through the signal generator, the power supply module and the logic gate driver chip, the No. 6 interface of the signal generator is connected with the voltage stabilizing capacitor and then grounded, the No. 2 interface of the signal generator is connected with the first voltage stabilizing resistor and then connected with the No. 6 interface of the signal generator in parallel and connected to the No. 4 interface of the first power supply module, the No. 2 interface of the signal generator is connected with the second voltage stabilizing resistor in series, a leading-out node is connected with the No. 2 interface of the logic gate driver, and other interfaces of the logic gate driver are grounded;
s2-4, the interface No. 2 of the first power supply module is connected with +5V high level, and the rest is grounded; the No. 1 and No. 8 interfaces of the logic gate driver are connected with the No. 4 interface of the second power module in parallel and grounded after being connected with the anode of the electrolytic capacitor and the ceramic capacitor, the No. 6 and No. 7 interfaces of the logic gate driver are output in parallel through a resistor Rg and output through the resistor Rg and R1, the interfaces of the rest logic gate drivers are grounded, the No. 1 interface of the second power module is connected with a +15V power supply, and the rest interfaces are grounded;
s2-5, the Marx circuit adopts a two-stage structure and is connected in parallel, and the energy storage capacitor of each stage adopts a high-voltage capacitor for storing energy; the current sharing is carried out through a plurality of triodes in parallel, wherein the conducting current direction of the triodes is consistent with the discharging current direction of the energy storage capacitor; the current flow direction of the fly-wheel diode is opposite to the flow direction of the charging current of the pulse transformer;
s2-6, forming a pulse transformer by spirally winding the nanocrystal core, the primary winding, the isolation layer, and the secondary winding.
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