CN206650599U - A kind of high voltage pulse circuit with sub-micro second-time rising and falling edges - Google Patents
A kind of high voltage pulse circuit with sub-micro second-time rising and falling edges Download PDFInfo
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- CN206650599U CN206650599U CN201720436780.3U CN201720436780U CN206650599U CN 206650599 U CN206650599 U CN 206650599U CN 201720436780 U CN201720436780 U CN 201720436780U CN 206650599 U CN206650599 U CN 206650599U
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Abstract
It the utility model is related to a kind of high voltage pulse circuit with sub-micro second-time rising and falling edges, circuit unit and half-bridge driven chopper circuit unit are adjusted including inversion transformation high direct voltage, described inversion transformation high direct voltage regulation circuit unit output high direct voltage, described half-bridge driven chopper circuit unit includes the two-way NMOS tube being connected with waveform generator and two-way MOSFET pipes, two-way NMOS tube produces copped wave pulse, driving two-way MOSFET pipes carry out recommending copped wave to the high direct voltage of inversion transformation high direct voltage regulation circuit unit output, export rising edge and the high voltage pulse of trailing edge steepness.The utility model can obtain rising edge by two-way push-pull drive copped wave and trailing edge is no more than 500ns high voltage pulse；Adjusted by the digitlization of copped wave pulse, can control the frequency, pulsewidth and output number of pulses of output high-voltage pulse, and the composite pulse of exportable multiple waveforms.
Description
Technical field
The utility model is related to a kind of pulsed high-voltage source circuit, and in particular to one kind have sub-micro second-time rise and under
The high voltage pulse circuit on edge is dropped, belongs to the close of the Applications of Nuclear Technology such as neutron well logging and minor diameter accelerator for neutron production used in association area
Seal the power source special of the scientific research application instrument such as neutron tube ion gun anode high voltage and nuclear physics experiment.
Background technology
Sealing neutron tube is the core for the controllable accelerator for neutron production of high-performance that can meet all kinds of neutron technology application requirements
Part, has the cramped construction feature of compact accelerator, the general Penning gas ion gun for using small size, and its anode needs to apply
1200V to 2500V amplitudes high voltage power supply.
The fusion of deuterium tritium produces 14MeV high-energy neutrons, is collided with characteristic nuclide generation non-ballistic in test substance and launches feature
Gamma-rays, radiation capture then occurs in moderating process and priming reaction also launches Characteristic γ ray, available for characteristic element
Detection and analysis；After usual high-energy neutron only about 10 μ S i.e. slowing down and capture reaction occurs.Use rising edge and trailing edge time for
The pulsed anode high pressure of sub-micro second-time, square wave formula pulsed neutron emission mode is realized, so as to meet above-mentioned fast thermal neutron analysis
Application requirement.
Analyze and apply for the underground such as oil well logging, uranium exploration neutron, minor diameter (Φ 18 to Φ 25mm) sealing used
Neutron tube must be equipped with the anodic pulse high voltage power supply of miniaturization.
For scientific researches such as nuclear physics experiments, digitized pulse neutron source need to be provided, realize different neutron pulse numbers and
Neutron analysis requirement of experiment under a variety of pulse duty factor combination conditions.
Domestic and international market can not yet purchase the power supply product for meeting above-mentioned application at present；Therefore, develop on sub-micro second-time
Rise and the digitized pulse high voltage power supply of trailing edge has important practical significance.
Utility model content
The purpose of this utility model is in view of the shortcomings of the prior art, there is provided a kind of circuit structure is simple, in disclosure satisfy that
Electronic generator whole application places need and are applied to minimize accelerator for neutron production have a sub-micro second-time rising and falling edges
High voltage pulse circuit.
The technical solution of the utility model is as follows：A kind of pulsed high-voltage with sub-micro second-time rising and falling edges
Road, including inversion transformation high direct voltage regulation circuit unit and half-bridge driven chopper circuit unit, described inversion transformation direct current
HV trimming circuit unit exports high direct voltage, and described half-bridge driven chopper circuit unit includes being connected with waveform generator
Two-way NMOS tube and two-way MOSFET pipe, two-way NMOS tube produce copped wave pulse, driving two-way MOSFET pipes to inversion transformation
The high direct voltage of high direct voltage regulation circuit unit output carries out recommending copped wave, and the pulse for exporting rising edge and trailing edge steepness is high
Pressure.
Further, there is the high voltage pulse circuit of sub-micro second-time rising and falling edges as described above, wherein, it is described
Inversion transformation high direct voltage regulation circuit unit includes DC voltage digitlization regulation circuit module, the high frequency transformation being sequentially connected
Device, rectification filtering module, low-voltage DC is through high frequency transformer caused by described DC voltage digitlization regulation circuit module
After boosting, high direct voltage is obtained by rectification filtering module rectification.
Further, there is the high voltage pulse circuit of sub-micro second-time rising and falling edges as described above, wherein, it is described
High frequency transformer is the high frequency transformer using push-pull drive.
The beneficial effects of the utility model are as follows：High voltage pulse circuit provided by the utility model passes through DC voltage numeral
Change the control that regulation circuit module realizes inversion transformation input voltage, it is high that output direct current can be continuously adjusted in the range of 0 to 2500V
Pressure amplitude value.The utility model can obtain the pulse height of rising edge and trailing edge no more than 500ns by two-way push-pull drive copped wave
Pressure；Adjusted by the digitlization of copped wave pulse, can control the frequency, pulsewidth and output number of pulses of output high-voltage pulse, and can
Export the composite pulse of multiple waveforms.
Brief description of the drawings
Fig. 1 is the theory diagram for the high voltage pulse circuit that the utility model has sub-micro second-time rising and falling edges；
Fig. 2 is the circuit diagram of the utility model DC voltage digitlization regulation circuit module；
Fig. 3 is the circuit diagram of the utility model half-bridge driven chopper circuit unit.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
The utility model provides a kind of new digitized pulse high-tension electricity with musec order rising and falling edges
Road, it is a kind of anodic pulse that can meet accelerator for neutron production whole application places needs and be applied to miniaturization accelerator for neutron production
High voltage power supply.The utility model is worked using low-voltage DC supply, and output pulse amplitude, frequency and pulsewidth are adjustable, most heavy
What is wanted is the rising edge of output high-voltage pulse, trailing edge is respectively less than 500nS, to meet accelerator for neutron production for anode high voltage arteries and veins
Rush the requirement of power supply.
Become as shown in figure 1, the digitized pulse high-tension circuit with musec order rising and falling edges mainly includes inversion
Straightening stream HV trimming circuit unit and half-bridge driven chopper circuit unit.Described inversion transformation high direct voltage regulation circuit list
First mainly high frequency transformer and rectifying and wave-filtering mould including DC voltage digitlization regulation circuit module and using push-pull drive
Block.Described half-bridge driven chopper circuit includes the two-way NMOS tube being connected with waveform generator and two-way MOSFET pipes, main
Copped wave pulse is produced by two-way NMOS tube, drive double MOSFET pipes to the regulation circuit unit output of inversion transformation high direct voltage
High direct voltage recommend copped wave, export rising edge and the high voltage pulse of trailing edge steepness.
The utility model half-bridge driven chopper circuit substitutes traditional spark switch or multiple serial semiconductor switch, and
And the upper and lower bridge arm for realizing copped wave so not only enables output high voltage pulse waveform change directly from high pressure, high speed metal-oxide-semiconductor
It is kind, and circuit structure is simple, while avoid the series of problems because caused by mismatching the parameter between different components.
The digitized pulse high-tension circuit output rising edge of pulse, trailing edge be less than 500nS, output high pressure from 0~
2.5kV is adjustable, and maximum output current reaches 2.5mA.The more importantly efficiency of the anode high voltage pulse power of the circuit design
Height, it is low in energy consumption, solve the heat dissipation problem of power supply well.Make whole power supply long-term installed in the cylinder interior energy of a small size
Steady operation.
DC voltage digitlization as specific embodiment adjusts the structure of circuit module as shown in Fig. 2 using two panels 256
Level AD5290 digital regulation resistance series connection, the accurate control for exporting DC voltage is realized to LM2576 voltage stabilizings output in the range of 0 to 15V
System.Then rectifying and wave-filtering after high frequency transformer boosts is inputted by recommending, obtains 0 to 2500V high direct voltages.
As specific embodiment half-bridge driven chopper circuit unit structure as shown in Fig. 2 using two panels operating voltage
Only 12V, driving force form two-way Chopper driving circuit up to 4A UCC27325 MOS driving chips, pressure-resistant to 2 to reach 4500V
IXTF02N450 type MOSFET FETs realize recommend copped wave, so as to realize 0 to 2500V high voltage pulses export, rising edge
It is no more than 500ns high voltage pulse with trailing edge, peak point current reaches 2.5mA；Meanwhile the composite pulse of exportable multiple waveforms.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if belonging to the utility model claims to these modifications and variations of the present utility model
And its within the scope of equivalent technology, then the utility model is also intended to comprising including these changes and modification.
Claims (3)
- A kind of 1. high voltage pulse circuit with sub-micro second-time rising and falling edges, it is characterised in that：Become straightening including inversion HV trimming circuit unit and half-bridge driven chopper circuit unit are flowed, described inversion transformation high direct voltage regulation circuit unit is defeated Go out high direct voltage, described half-bridge driven chopper circuit unit includes two-way NMOS tube and the two-way being connected with waveform generator MOSFET is managed, and two-way NMOS tube produces copped wave pulse, and driving two-way MOSFET pipes adjust circuit list to inversion transformation high direct voltage The high direct voltage of member output carries out recommending copped wave, exports rising edge and the high voltage pulse of trailing edge steepness.
- 2. there is the high voltage pulse circuit of sub-micro second-time rising and falling edges as claimed in claim 1, it is characterised in that：Institute The inversion transformation high direct voltage regulation circuit unit stated includes DC voltage digitlization regulation circuit module, the high frequency being sequentially connected Transformer, rectification filtering module, low-voltage DC caused by described DC voltage digitlization regulation circuit module become through high frequency After depressor boosting, high direct voltage is obtained by rectification filtering module rectification.
- 3. there is the high voltage pulse circuit of sub-micro second-time rising and falling edges as claimed in claim 2, it is characterised in that：Institute The high frequency transformer stated is the high frequency transformer using push-pull drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720436780.3U CN206650599U (en) | 2017-04-24 | 2017-04-24 | A kind of high voltage pulse circuit with sub-micro second-time rising and falling edges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720436780.3U CN206650599U (en) | 2017-04-24 | 2017-04-24 | A kind of high voltage pulse circuit with sub-micro second-time rising and falling edges |
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| Publication Number | Publication Date |
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| CN206650599U true CN206650599U (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720436780.3U Active CN206650599U (en) | 2017-04-24 | 2017-04-24 | A kind of high voltage pulse circuit with sub-micro second-time rising and falling edges |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412453A (en) * | 2018-10-31 | 2019-03-01 | 重庆大学 | It is a kind of based on the front and back of MMC along adjustable high pressure millimicrosecond pulse generator |
-
2017
- 2017-04-24 CN CN201720436780.3U patent/CN206650599U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412453A (en) * | 2018-10-31 | 2019-03-01 | 重庆大学 | It is a kind of based on the front and back of MMC along adjustable high pressure millimicrosecond pulse generator |
| CN109412453B (en) * | 2018-10-31 | 2020-07-21 | 重庆大学 | MMC-based front and back edge adjustable high-voltage nanosecond pulse generator |
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