CN106803751A - A kind of nanosecond steep-sided pulse small generator - Google Patents
A kind of nanosecond steep-sided pulse small generator Download PDFInfo
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- CN106803751A CN106803751A CN201710097591.2A CN201710097591A CN106803751A CN 106803751 A CN106803751 A CN 106803751A CN 201710097591 A CN201710097591 A CN 201710097591A CN 106803751 A CN106803751 A CN 106803751A
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- module
- solid
- state switch
- direct current
- small generator
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
Abstract
The invention discloses a kind of nanosecond steep-sided pulse small generator, including it is arranged at rectification module in same box body, copped wave module, solid-state switch, direct current biasing module, pulse signal generator and radiating module；The inner space of the box body is divided into three regions by barricade, and it is located at first area for forming the rectification module of high-voltage DC power supply needed for solid-state switch and copped wave module, described solid-state switch is individually located at second area, and direct current biasing module, pulse signal generator and radiating module are located at the 3rd region.The present invention realizes the miniaturization of impulse generator, the integrated level of impulse generator is improve on the whole, DC high-voltage source is especially carried out into built-inization treatment, it is easy to use, solid-state switch is individually isolated, avoid the influence that electromagnetic interference is caused so that modules are normal, high-efficiency operation, ensure that device works in rational temperature by radiating module.
Description
Technical field
The present invention relates to a kind of pulse generating unit, and in particular to a kind of nanosecond steep-sided pulse small generator.
Background technology
Pulse electroacoustic method is widely used in grinding the problems such as polymeric material Space-charge, media ages, transient state puncture
Study carefully, it is the main obstruction for limiting current e measurement technology progress to lack high performance impulse generator.Measured as pulse electroacoustic method
The core component of polymer material properties, impulse generator must produce high repetition frequency, the steep-sided pulse of a few nanosecond pulse ranks
High speed, sensitive, accurate measurement could be realized.Improve study hotspot and difficulty that impulse generator performance is always pulse electroacoustic method
Point, principal element is that repetition rate high can cause dissipated power high, the width of circuit layout, encapsulation shield technology to pulse
Value, pulsewidth, waveform influence are very big, and current existing impulse generator is extremely difficult to such technical goal.
In order to realize impulse generator produce high-frequency, the target of nanosecond steep-sided pulse, domestic and foreign scholars using differential circuit,
The technologies such as peaking circuit, pulse-forming line realize the generation of burst pulse, and the square wave that wherein pulse shaping line technology is formed is compared with differential
Circuit, peaking circuit are more square whole, wherein again with the most widely used of Blumlein transmission lines.
At this stage, having there is the technical grade pulse generator module for producing such high-frequency, nanosecond steep-sided pulse, but
It is that this generic module must be aided with HVDC source, 5V DC bias supplies and the resistance for matching, electric capacity in use.
More restrict, shadow of the module heating by outer meeting resistance, electric capacity, stray resistance, stray capacitance and encapsulation shield technology
Sound is particularly evident, if resistance, capacitance selection are improper, circuit layout is not excellent enough, not only can not be by the performance whole of the module
Show, also easily because heating power is too big, radiating deficiency causes module damage.To realize that convenient use pulse electroacoustic method is surveyed
Weight polymers insulating materials property, occurs in the urgent need to developing a kind of set of high-performance, high repetition frequency, nanosecond steep-sided pulse
Device.
The content of the invention
It is an object of the invention to be directed to above-mentioned the problems of the prior art, there is provided a kind of small-sized generation of nanosecond steep-sided pulse
Device, the integrated multiple modules of the generator, and stable and reliable operation, with repetition rate higher, can realize that device is small-sized
Change.
To achieve these goals, the technical solution adopted by the present invention is：
Including the rectification module, copped wave module, solid-state switch, direct current biasing module, the pulse that are arranged in same box body
Signal generator and radiating module；The inner space of the box body is divided into three regions by barricade, and for being formed
The rectification module and copped wave module of high-voltage DC power supply needed for solid-state switch are located at first area, the independent position of described solid-state switch
In second area, direct current biasing module, pulse signal generator and radiating module are located at the 3rd region；Described rectification module
Solid-state switch is connected by current-limiting resistance with after copped wave block coupled in series, solid-state switch is parallel with as the energy storage electricity of energy-storage units
Hold；Pulse signal generator is grounded the build-out resistor that anti-stop signal in parallel reflects at top, and direct current biasing module ground is simultaneously combined
In the matching capacitance for reducing mains ripple；The output end of solid-state switch connects load resistance and load capacitance by coaxial cable,
And export pulse.
Described radiating module includes air suction type radiator and water-filled radiator.
The output end of the solid-state switch is connected to suppress the noise reduction resistance and noise reduction electric capacity of noise.
Described current-limiting resistance uses 1~10K ohm of metalfilmresistor, and build-out resistor is electric using 50 ohm of metal film
Resistance, matching capacitance uses the electrochemical capacitor of 10uF, noise reduction resistance to use 0~50 ohm of metalfilmresistor, noise reduction electric capacity to use 0
The ceramic condenser of~100pF, storage capacitor uses the ceramic condenser of 22nF, load resistance to use 50 ohm of metalfilmresistor,
Load capacitance uses the ceramic condenser of 40pF, and the characteristic impedance of coaxial cable is 50 ohm.
External the first additional capacitor and the second additional capacitor for relaxing output voltage of described solid-state switch.
The rectification module is input into the alternating current of 220V, exports the direct current of 24V；Copped wave module is input into the direct current of 24V,
Export the direct current of 8000V.It is 1.0A, duty for 5V-10V, driving current that the pulse signal generator uses operating voltage
The N555 trigger modules that than adjustable range be 5%-95%, frequency range is 200Hz-3000Hz；The input of direct current biasing module
Voltage is 24V, and output voltage is 5V.The design parameter of the solid-state switch is：8000V DC input voitages, 3V-6V triggering electricity
Signal, 5V DC offset voltages are output as 5ns burst pulses.
Described solid-state switch is switched using the HTS-50-08 models of BEHLKE companies of Germany production.
Described box body and barricade are made by aluminium.
Compared with prior art, the present invention is by by rectification module, copped wave module, solid-state switch, direct current biasing module, arteries and veins
Rush signal generator and radiating module is arranged in same box body, realize the miniaturization of impulse generator, on the whole
The integrated level of impulse generator is improve, DC high-voltage source is especially carried out into built-inization treatment, it is easy to use.The inside of box body
Space is divided into three regions by barricade, the space environment of needs good shielding when solid-state switch works, and rectification module
Can operationally electromagnetic interference be produced to surrounding environment, the motor of radiating module in the process of running also can be to week with copped wave module
Generation electromagnetic interference is enclosed, solid-state switch is individually isolated, it is ensured that normal, the high-efficiency operation of each module.Additionally, solid-state switch
When working in high repetition frequency, heat can be produced due to the charging repeatedly of electric capacity, discharge process, simultaneously because the resistance in circuit
Joule thermal losses is produced, the huge heat that solid-state switch is produced can not only limit giving full play to for its performance, so that can not produce
Required high repetition frequency nanosecond steep-sided pulse, or even burning or puncturing for device can be caused because of overheat.By radiating mould
Block realizes solid-state switch and the overall radiating of device, it is ensured that device works in rational temperature, while playing device to greatest extent
Part performance.
Brief description of the drawings
Each module connection structure block diagram of Fig. 1 present invention；
The space layout schematic diagram of each module of Fig. 2 present invention；
Fig. 3 integrated circuit connection diagrams of the present invention；
In accompanying drawing：1- rectification modules；2- copped wave modules；3- solid-state switches；4- direct current biasing modules；5- pulse signals occur
Device；6- radiating modules；R1- current-limiting resistance；R2- build-out resistor；C1- matching capacitance；C2- the first additional capacitor；C3- the second additional electrical
Hold；CB- storage capacitor；CBP- noise reduction electric capacity；RS- noise reduction resistance；RL- load resistance；CL- load capacitance.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Referring to Fig. 1, the present invention is for high integration, the internal high-voltage used in pulse electroacoustic method Study Polymer Melts material
Source, high repetition frequency nanosecond steep-sided pulse small generator, including it is rectification module 1, copped wave module 2, pulse signal generator 5, straight
Stream biasing module 4, solid-state switch 3, radiating module 6, wherein solid-state switch 3 are using BEHLKE companies of Germany HTS-50-08 models
Switch, radiating module 6 is using air suction type radiator, deflector and water-cooling heat radiating system.The design parameter of rectification module 1
For：Input 220V alternating currents, are output as 24V direct currents；The design parameter of DC chopped-wave module is：It is 24V direct currents to be input into, defeated
It is 8000V direct currents to go out；Pulse signal generator 5 uses N555 trigger modules, and its design parameter is：Operating voltage 5V-10V,
Driving current 1.0A (open collector output), duty cycle adjustment scope 5%-95%, frequency range 200HZ-3000Hz；Direct current
The design parameter of biasing module 4 is：Input 24V, exports 5V；The design parameter of solid-state switch 3 is：Input 8000V HVDCs
Electricity, the trigger signal of 3V-6V, 5V direct current biasings are output as the burst pulse of 5ns；The design parameter of radiating module 6 is：220V is handed over
Stream power supply, 2300 revs/min of air suction type radiator.Alternating current 220V is converted to direct current 24V by rectification module, by copped wave mould
24V direct currents electric boost is 8000V direct currents by block 2, is input into as the HVDC source of solid-state switch 3；Pulse signal generator 5
For solid-state switch 3 provides a trigger voltage；24V DC decompressions are 5V by 5V DC Modules, are that the offer of solid-state switch 3 one is auxiliary
Help voltage；Copper bar adheres to the back of solid-state switch 3, and by water pipe as copper bar gap, water pipe end connects a fan auxiliary heat dissipation,
Air suction type radiator is connect with further heat radiation ability at device back simultaneously.
Referring to Fig. 2, impulse generator of the present invention is by rectification module 1, copped wave module 2, solid-state switch 3, direct current biasing module
4th, pulse signal generator 5 and radiating module 6 amount to six module compositions.The inner space of device is divided into three regions, dress
Put housing and each divisional plane is aluminium plate, only need position to open aperture to realize the connection of each module through wire.
First area is rectification module 1, copped wave module 2, is used to the high-voltage DC power supply needed for forming solid-state switch 3, but
Electromagnetic interference can be produced to solid-state switch 3 in the process of running, therefore by rectification module 1, copped wave module 2 and second area
Solid-state switch 3 separated with aluminium sheet.Second area is solid-state switch 3, and solid-state switch 3 easily receives external electromagnetic ring in use
The interference in border, so the closure in the region must be lifted as far as possible.Believe including direct current biasing module 4, pulse in 3rd region
Number generator 5, radiating module 6 amount to three modules.Copper bar is close to solid-state switch 3, the gap arrangement water pipe of copper bar, water pipe end
Connection small electric fan accelerates radiating, improves device radiation effect using air suction type radiator, because radiating module 6 and extraneous ring
Border connects, and motor in the process of running can be to around producing electromagnetic interference, so second area is adequately isolated with the 3rd region.
Referring to Fig. 3, solid-state switch is connected by current-limiting resistance R1 after rectification module of the present invention 1 and the series connection of copped wave module 2
3, solid-state switch 3 is parallel with as the storage capacitor C of energy-storage unitsB；The ground connection of pulse signal generator 5 is parallel with anti-stop signal and exists
The build-out resistor R of top reflection2, direct current biasing module 4 is grounded and is parallel with matching capacitance C for reducing mains ripple1；Solid-state
The output end of switch 3 connects load resistance R by coaxial cableLAnd load capacitance CL, and export pulse.
Current-limiting resistance R1It is 1~10K ohm of metalfilmresistor；
Build-out resistor R2It is 50 ohm of metalfilmresistor, realizes top impedance matching, it is to avoid reflection of the signal at top；
Matching capacitance C1It is the electrochemical capacitor of 10uF, it is in parallel with 5V bias supplies, to reduce the pulsation of 5V voltages；
First additional capacitor C2With the second additional capacitor C3It is the very small electric capacity of numerical value, is used to relax output voltage；
Noise reduction resistance RSUsing 0~50 ohm of metalfilmresistor, with noise reduction electric capacity CBPCoordinate, to reduce, suppress noise；
Noise reduction electric capacity CBPUsing the ceramic condenser of 0~100pF, with noise reduction resistance RSCoordinate, to reduce, suppress noise；
Storage capacitor CBIt is in parallel with solid-state switch 3 using the ceramic condenser of 22nF, as energy-storage units；
Load resistance RLIt is 50 ohm of metalfilmresistor；
Load capacitance CLIt is the ceramic condenser of 40pF；
The characteristic impedance of coaxial cable is 50 ohm.
Integrated circuit of the present invention has following requirement in terms of wiring：1. each element connects as far as possible near solid-state switch 3
Wiring is short as far as possible, while considering to reduce the inductance of circuit；2. wire resistor is prohibitted the use of；3. the loop area of inductive sensor
Should be small as far as possible；4. star-like single-point grounding, avoids ground loop as far as possible, reduces grounded inductor.
Claims (10)
1. a kind of nanosecond steep-sided pulse small generator, it is characterised in that：Including the rectification module being arranged in same box body
(1), copped wave module (2), solid-state switch (3), direct current biasing module (4), pulse signal generator (5) and radiating module (6)；
The inner space of the box body is divided into three regions by barricade, and for forming HVDC needed for solid-state switch (3)
The rectification module (1) and copped wave module (2) of power supply are individually located at second area positioned at first area, described solid-state switch (3),
Direct current biasing module (4), pulse signal generator (5) and radiating module (6) are positioned at the 3rd region；
By current-limiting resistance (R after described rectification module (1) and copped wave module (2) series connection1) connection solid-state switch (3), solid-state is opened
(3) are closed to be parallel with as the storage capacitor (C of energy-storage unitsB)；Pulse signal generator (5) is grounded anti-stop signal in parallel at top
Build-out resistor (the R of reflection2), direct current biasing module (4) ground connection matching capacitance (C for reducing mains ripple in parallel1)；Solid-state
The output end for switching (3) connects load resistance (R by coaxial cableL) and load capacitance (CL), and export pulse.
2. nanosecond steep-sided pulse small generator according to claim 1, it is characterised in that：Described radiating module (6) bag
Include air suction type radiator and water-filled radiator.
3. nanosecond steep-sided pulse small generator according to claim 1, it is characterised in that：The solid-state switch (3) it is defeated
Go out the noise reduction resistance (R that end is connected to suppress noiseS) and noise reduction electric capacity (CBP)。
4. nanosecond steep-sided pulse small generator according to claim 3, it is characterised in that：Described current-limiting resistance (R1) adopt
With 1~10K ohm of metalfilmresistor, build-out resistor (R2) using 50 ohm of metalfilmresistors, matching capacitance (C1) use
The electrochemical capacitor of 10uF, noise reduction resistance (RS) using 0~50 ohm of metalfilmresistor, noise reduction electric capacity (CBP) use 0~100pF
Ceramic condenser, storage capacitor (CB) using the ceramic condenser of 22nF, load resistance (RL) using 50 ohm of metalfilmresistors,
Load capacitance (CL) using the ceramic condenser of 40pF, the characteristic impedance of coaxial cable is 50 ohm.
5. nanosecond steep-sided pulse small generator according to claim 1, it is characterised in that：Described solid-state switch (3) is outward
Meet the first additional capacitor (C for relaxing output voltage2) and the second additional capacitor (C3)。
6. nanosecond steep-sided pulse small generator according to claim 1, it is characterised in that：Rectification module (1) is input into 220V
Alternating current, export 24V direct current；Copped wave module (2) is input into the direct current of 24V, exports the direct current of 8000V.
7. nanosecond steep-sided pulse small generator according to claim 1, it is characterised in that：The pulse signal generator
(5) it is that 1.0A, duty cycle adjustment scope are that 5%-95%, frequency range are for 5V-10V, driving current to use operating voltage
The N555 trigger modules of 200Hz-3000Hz；The input voltage of direct current biasing module (4) is 24V, and output voltage is 5V.
8. nanosecond steep-sided pulse small generator according to claim 1, it is characterised in that：Solid-state switch (3) set
Counting parameter is：8000V DC input voitages, 3V-6V triggering electric signals, 5V DC offset voltages are output as 5ns burst pulses.
9. the nanosecond steep-sided pulse small generator according to claim 1 or 8, it is characterised in that：Described solid-state switch (3)
The HTS-50-08 models produced using German BEHLKE companies are switched.
10. nanosecond steep-sided pulse small generator according to claim 1, it is characterised in that：Described box body and shielding
Plate is made by aluminium.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710097591.2A CN106803751A (en) | 2017-02-22 | 2017-02-22 | A kind of nanosecond steep-sided pulse small generator |
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| CN201710097591.2A CN106803751A (en) | 2017-02-22 | 2017-02-22 | A kind of nanosecond steep-sided pulse small generator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2666353C1 (en) * | 2017-06-28 | 2018-09-07 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Sub-nanosecond electrons accelerator |
| RU2699231C1 (en) * | 2018-08-29 | 2019-09-04 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Subnanosecond electron accelerator |
| RU2711213C1 (en) * | 2019-05-13 | 2020-01-15 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Subnanosecond electron accelerator |
| CN114280411A (en) * | 2021-11-19 | 2022-04-05 | 中国电建集团河北省电力勘测设计研究院有限公司 | Test method for obtaining high-frequency response of cable |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2666353C1 (en) * | 2017-06-28 | 2018-09-07 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Sub-nanosecond electrons accelerator |
| RU2699231C1 (en) * | 2018-08-29 | 2019-09-04 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Subnanosecond electron accelerator |
| RU2711213C1 (en) * | 2019-05-13 | 2020-01-15 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Subnanosecond electron accelerator |
| CN114280411A (en) * | 2021-11-19 | 2022-04-05 | 中国电建集团河北省电力勘测设计研究院有限公司 | Test method for obtaining high-frequency response of cable |
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Application publication date: 20170606 |