CN105915102A - High-voltage pull-down pulse generation device - Google Patents
High-voltage pull-down pulse generation device Download PDFInfo
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- CN105915102A CN105915102A CN201610431069.9A CN201610431069A CN105915102A CN 105915102 A CN105915102 A CN 105915102A CN 201610431069 A CN201610431069 A CN 201610431069A CN 105915102 A CN105915102 A CN 105915102A
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- main circuit
- high pressure
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- drop
- generating unit
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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
- H02M11/00—Power conversion systems not covered by the preceding groups
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Abstract
The invention discloses a high-voltage pull-down pulse generation device which comprises a main circuit and a driving circuit. In the driving circuit, a unipolar high-voltage direct-current power supply is connected with a switch module end of a rapid switch part and a pulse output end through serial high-voltage resistors. The other end of the switch circuit is grounded. A synchronous pulse signal source is connected with a trigger module of the rapid switch part so as to control the on-off state of the switch module of the rapid switch part. In the main circuit, a main pulse input end is connected with a driving pulse output end and is connected with first ends of a first current divider and a second current divider through a main circuit first filtering module. A second end of the current divider is connected with a second output end of the main circuit, and a second end of the second current divider is connected with a first output end of the main circuit. By adopting the device provided by the invention, the sensitivity and the resolution ratio of the flight time mass spectrum are improved, the structure is simple, and the cost is lowered.
Description
Technical field
The invention belongs to MALDI TOF MS field, particularly relate to a kind of pulse generating unit.
Background technology
Matrix Assisted Laser Desorption ion source refers in a small region, in extremely short time interval, laser provides high energy to sample, the heating that they are exceedingly fast, so can avoid heat sensitive compound heat resolve, substrate molecule can effectively absorb the energy of laser, and indirectly pass to sample molecule, thus ionized, owing to the process of laser bombardment sample completes in a very short time, the electric field needing a high voltage electric field and a nanosecond sudden change coordinates with laser pulse, make the ion after ionization can leave sample panel after laser bombardment, time delay in high voltage electric field, acceleration is quickly obtained in nanosecond sudden change electric field, and then be transferred in mass analyzer, so electric field of high pressure sudden change needs the switching of fastish impulse circuit and high voltage power supply to provide.
Electric field controls in Matrix Assisted Laser Desorption ion source, sensitivity and resolution for flight time mass spectrum have vital effect, and the main high pressure using 0 ~ ± 800v in prior art, pulse amplitude only has ± 800V, pulse width is up to about 100ms, cannot meet required precision, the most corresponding circuit structure is the most complicated, reacts the slowest.
Summary of the invention
In view of this, need to overcome at least one in drawbacks described above of the prior art.The invention provides a kind of drop-down pulse generating unit of high pressure, including main circuit and drive circuit；Described drive circuit includes unipolar high voltage DC source, synchronization pulse source, high-speed switch parts, driving pulse outfan；Described unipolar high voltage DC source is coupled with switch module one end and the described pulse output end of described high-speed switch parts by tandem high pressure resistance, described on-off circuit other end ground connection, described synchronization pulse source couples opening or closing of the described switch module to control described high-speed switch parts with the trigger module of described high-speed switch parts；Described main circuit includes main pulse input, main dc power supply, main circuit the first outfan, main circuit the second outfan；Described main pulse input couples with described driving pulse outfan, described main pulse input is coupled by the first end of main circuit the first filtration module and the first diverter and the second diverter, second end of described first diverter couples with described main circuit the second outfan, and the second end of described second diverter couples with described main circuit the first outfan.
According in this patent background technology to described in prior art, the main high pressure using 0 ~ ± 800v in prior art, pulse amplitude only ± 800V, pulse width is up to about 100ms, cannot meet required precision, the most corresponding circuit structure is the most complicated, reacts the slowest；And the drop-down pulse generating unit of high pressure disclosed by the invention, by high-speed switch is used > rising edge of 2V triggers, make the rapid adhesive of high-speed switch, form effective drop-down pulse, relatively conventional high-tension switchs, it is not necessary to heating power or the drive circuit of complexity, the most also has the shortest recovery time and low jitter advantage, to achieve simple in construction, cost lower for main circuit simultaneously, and performance is more stable and the more preferable advantage of filtering performance.
It addition, according to the drop-down pulse generating unit of high pressure disclosed by the invention also there is following additional technical feature:
Further, described tandem high pressure resistance includes the first high-tension resistive and second high-tension resistive of series connection.
Further, there is main circuit the first filtration module between described first high-tension resistive and described second high-tension resistive.
Preferably, described main circuit the first filtration module includes multiple shunt capacitance.
Further, described second high-tension resistive is parallel with the second stabilivolt (D2).
Further, described high-speed switch parts are HTS150 high-speed switch.
Further, described pulse driving circuit also includes the 11st stabilivolt and the 10th stabilivolt, 1 end of described 11st stabilivolt couples with 2 ends of described high-speed switch parts, 2 end ground connection of described high-speed switch parts, 2 ends and 1 end of described 10th stabilivolt of described 11st stabilivolt couple with 1 end of described high-speed switch parts, and 2 ends of described 10th stabilivolt couple with 3 ends of described high-speed switch parts.
Further, described pulse driving circuit also includes the capacitance group that two ends couple with 2 ends and 3 ends of described high-speed switch parts.
Further, described pulse driving circuit also includes the inductance component that one end ground connection other end couples with 2 ends of described high-speed switch parts.
Further, a described 11st stabilivolt resistance the most in parallel.
In an embodiment of this case, unipolar high voltage DC source PIEHV signal is connected to one end of the switch module of high-speed switch parts after main circuit the first filtration module, connect upper first high-tension resistive and the second high-tension resistive；Now synchronization pulse source sends one > rising edge of 2V triggers signal, high-speed switch module Guan Bi makes pulse output end and GND short circuit, so that pulse output end obtains the drop-down pulse of a PIEHV à 0, the amplitude of this pulse is decided by the voltage of PIEHV, and width is decided by the closing time of high-speed switch.
High-speed switch in this case uses HTS150 switch, it can generate accurate amplitude and be up to the high-voltage pulse of 15KV, HTS150 has 5 pins, when synchronization pulse source provides a quick forward position and low pulse, HTS150 switch, rapid adhesive, relatively conventional high-tension switchs, it need not the drive circuit of heating power or complexity, the most also has the shortest recovery time and low jitter advantage.
Further, described main circuit the first filtration module includes multiple series capacitance.
Further, described main circuit also includes main circuit the second filtration module, one end ground connection of described main circuit the second filtration module, and the other end couples with described main circuit the first outfan.
Further, series resistance between described main circuit the second filtration module and described main circuit the first outfan.
Further, the first end of described first diverter and described second diverter passes through resistance and inductance component ground connection.
In an embodiment of this case, in main circuit, the first end of the first diverter R31 and the second diverter (R39 and R33 series connection) is by resistance (R36, R37, R38, R40 connect) and inductance L6 ground connection；Main dc power supply HV passes through the resistance (R29 with R30 series connection) the first end respectively with the first diverter and the second diverter and is connected, and thus, makes circuit stability.
Under main circuit the first filtration module (tetra-series capacitances of C50, C51, C52, C53) acts on, the high-voltage pulse power source that main pulse input produces can generate ± the pulse voltage of 10KV；The segment pulse of main circuit the second wave filter (C44, C45, C46, C47, C48, C49 are in parallel) filtered voltage, makes the high direct voltage that main circuit the first outfan HV out1 output is stable；Thus, making simple in construction, low price, stable performance, filtering performance is good.
Wherein, PLSin1 is 0～10KV, 10us level pulse signal from drive circuit input, HV is 0～30KV adjustable DC high pressure of high-voltage DC power supply input, C50, C51, C52, C53 are pressure 40KV, the electric capacity of 1000pF, PLSin1 is coupled out a drop-down pulse by these 4 series capacitances with HV, then is pulse amplitude by the resistance R31 output i.e. HV out2(HV out2=HV-PLSin1, PLSin1 of a 1K)；HV out1 output is still that HV is constant, R39 position high pressure adjustable potentiometer, for the fine setting to parameter.
When the high pressure of HV output 30KV, if the pulse signal of main pulse input output 10KV → 0, the then high direct voltage of outfan HV out1 output 30KV, the high voltage pulse of outfan HV out2 output 30KV → 20KV.
Aspect and advantage that the present invention adds will part be given in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage will be apparent from easy to understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the driving circuit principle figure of the drop-down pulse generating unit of high pressure；
Fig. 2 is the main circuit schematic diagram of the drop-down pulse generating unit of high pressure.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, and the most same or similar label represents same or similar element or has the element of same or like function.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
In describing the invention, it will be appreciated that, term " on ", D score, " end ", " top ", "front", "rear", " interior ", " outward ", " horizontal ", the orientation of the instruction such as " erecting " or position relationship be based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or hint indication device or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " connects ", " connection ", " being connected ", should be interpreted broadly " connection ", " cooperation ", connects for example, it may be fixing, it is integrally connected, it is also possible to be to removably connect；It can be the connection of two element internals；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary；For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood with concrete condition.
The inventive concept of the present invention is as follows, by using easier high-speed switch to operate, and more stable circuit structure, compare conventional high-tension switch, need not the drive circuit of heating power or complexity, the most also having the shortest recovery time and a low jitter advantage, to achieve simple in construction, cost lower for main circuit simultaneously, and performance is more stable and the more preferable advantage of filtering performance.
Describing the present invention below with reference to accompanying drawings, wherein Fig. 1 is the driving circuit principle figure of the drop-down pulse generating unit of high pressure；Fig. 2 is the main circuit schematic diagram of the drop-down pulse generating unit of high pressure.
As shown in Figure 1-2, according to embodiments of the invention, the drop-down pulse generating unit of described high pressure includes: include main circuit (as shown in Figure 2) and drive circuit (as shown in Figure 1)；Described drive circuit includes unipolar high voltage DC source PEIHV, synchronization pulse source TTL Trig, high-speed switch parts K4, driving pulse outfan PLSOut；Described unipolar high voltage DC source PEIHV is coupled with switch module one end 4 and the described pulse output end PLSOut of described high-speed switch parts K4 by tandem high pressure resistance (R1 and R2), described on-off circuit 5 other end ground connection, the trigger module (1,2,3) of described synchronization pulse source TTL Trig and described high-speed switch parts K4 couples opening or closing of described switch module (4,5) to control described high-speed switch parts K4；Described main circuit includes main pulse input PLSIn1, main dc power supply HV, main circuit the first outfan HVOut1, main circuit the second outfan HVOut2；Described main pulse input PLSIn1 couples with described driving pulse outfan PLSOut, described main pulse input PLSIn1 is coupled by the first end of main circuit the first filtration module and the first diverter R31 and the second diverter (series connection of R33 and R39), second end of described first diverter R31 couples with described main circuit the second outfan HVOut2, and the second end of described second diverter (series connection of R33 and R39) couples with described main circuit the first outfan HVOut1.
It addition, according to the drop-down pulse generating unit of high pressure disclosed by the invention also there is following additional technical feature:
According to some embodiments of the present invention, described tandem high pressure resistance includes the first high-tension resistive R1 and the second high-tension resistive R2 of series connection, as shown in Figure 1.
Preferably, there is main circuit the first filtration module, as shown in Figure 1 between described first high-tension resistive R1 and the second high-tension resistive R2.
Preferably, described main circuit the first filtration module includes multiple shunt capacitance, as it is shown in figure 1, include C1-C7.
Preferably, described second high-tension resistive R2 is parallel with the second stabilivolt (D2).
According to some embodiments of the present invention, described high-speed switch parts K4 is HTS150 high-speed switch.
According to one embodiment of present invention, described pulse driving circuit also includes the 11st stabilivolt D11 and the 10th stabilivolt D10,1 end of described 11st stabilivolt D11 couples with 2 ends of described high-speed switch parts K4, the 2 end ground connection of described high-speed switch parts K4,2 ends of described 11st stabilivolt D11 and 1 end of described 10th stabilivolt D10 couple with 1 end of described high-speed switch parts K4,2 ends of described 10th stabilivolt D10 couple, as shown in Figure 1 with 3 ends of described high-speed switch parts K4.
According to one embodiment of present invention, described pulse driving circuit also includes the capacitance group (C101, C102, C22) that two ends couple with 2 ends and 3 ends of described high-speed switch parts K4, as shown in Figure 1.
According to one embodiment of present invention, described pulse driving circuit also includes one end ground connection, the inductance component L3 that the other end couples with 2 ends of described high-speed switch parts K4.
According to one embodiment of present invention, a described 11st stabilivolt resistance R13 the most in parallel.
In an embodiment of this case, unipolar high voltage DC source PIEHV signal is connected to one end of the switch module (4,5) of high-speed switch parts K4 after main circuit the first filtration module (C1-C7), the upper first high-tension resistive R1 and the second high-tension resistive R2 that connects；Now synchronization pulse source TTL Trig sends one > rising edge of 2V triggers signal, high-speed switch module Guan Bi (4,5 short circuit) makes pulse output end PLSOut and GND short circuit, so that pulse output end PLSOut obtains the drop-down pulse of a PIEHV à 0, the amplitude of this pulse is decided by the voltage of PIEHV, and width is decided by the closing time of high-speed switch parts K4.
High-speed switch parts K4 in this case uses HTS150 switch, it can generate accurate amplitude and be up to the high-voltage pulse of 15KV, HTS150 has 5 pins, when synchronization pulse source TTL Trig provides a quick forward position and low pulse, HTS150 switch, rapid adhesive, relatively conventional high-tension switchs, it need not the drive circuit of heating power or complexity, the most also has the shortest recovery time and low jitter advantage.
According to some embodiments of the present invention, described main circuit the first filtration module includes multiple series capacitance C50, as shown in Figure 2.
According to some embodiments of the present invention, described main circuit also includes main circuit the second filtration module, one end ground connection of described main circuit the second filtration module, and the other end couples, as shown in Figure 2 with described main circuit the first outfan HVOut1.
Further, series resistance (R34, R35) between described main circuit the second filtration module and described main circuit the first outfan HVOut1, as shown in Figure 2.
According to some embodiments of the present invention, the first end of described first diverter R31 and described second diverter (R39 and R33 series connection) is by resistance (R36, R37, R38, R40 connect) and inductance component L6 ground connection.
In an embodiment of this case, in main circuit (as shown in Figure 2), the first end of the first diverter R31 and the second diverter (R39 and R33 series connection) is by resistance (R36, R37, R38, R40 connect) and inductance L6 ground connection；Main dc power supply HV passes through the resistance (R29 with R30 series connection) the first end respectively with the first diverter R31 and the second diverter (R39 and R33 series connection) and is connected, and thus, makes circuit stability.
Under main circuit the first filtration module (tetra-series capacitances of C50, C51, C52, C53) acts on, the high-voltage pulse power source that main pulse input PLSin1 produces can generate ± the pulse voltage of 10KV；The segment pulse of main circuit the second wave filter (C44, C45, C46, C47, C48, C49 are in parallel) filtered voltage, makes the high direct voltage that main circuit the first outfan HV out1 output is stable；Thus, making simple in construction, low price, stable performance, filtering performance is good.
Wherein, PLSin1 is 0～10KV, 10us level pulse signal from drive circuit input, HV is 0～30KV adjustable DC high pressure of high-voltage DC power supply input, C50, C51, C52, C53 are pressure 40KV, the electric capacity of 1000pF, PLSin1 is coupled out a drop-down pulse by these 4 series capacitances with HV, then is pulse amplitude by the resistance R31 output i.e. HV out2(HV out2=HV-PLSin1, PLSin1 of a 1K)；HV out1 output is still that HV is constant, R39 position high pressure adjustable potentiometer, for the fine setting to parameter.
When the high pressure of HV output 30KV, if the pulse signal of main pulse input PLSin1 output 10KV → 0, the then high direct voltage of outfan HV out1 output 30KV, the high voltage pulse of outfan HV out2 output 30KV → 20KV.
Any mention that " embodiment ", " embodiment ", " illustrative examples " etc. mean to combine concrete component, structure or feature that this embodiment describes and be contained at least one embodiment of the present invention.In this specification, this schematic representation everywhere is not necessarily referring to identical embodiment.And, when combining any embodiment and describing concrete component, structure or feature, advocated, realize such component, structure or feature in conjunction with other embodiment and all fall within the scope of those skilled in the art.
Although the detailed description of the invention of the present invention is described in detail by the multiple illustrative examples with reference to the present invention, it must be understood that, those skilled in the art can be designed that multiple other improvement and embodiment, these improve and embodiment will fall within spirit and scope.Specifically, within the scope of aforementioned disclosure, accompanying drawing and claim, rational modification and improvement can be made in terms of the layout of parts and/or sub-combination layout, without departing from the spirit of the present invention.Except the modification in terms of parts and/or layout and improvement, its scope is defined by the appended claims and the equivalents thereof.
Claims (10)
1. the drop-down pulse generating unit of high pressure, it is characterised in that including:
Main circuit and drive circuit；
Described drive circuit includes unipolar high voltage DC source, synchronization pulse source, high-speed switch parts, driving pulse outfan；
Described unipolar high voltage DC source is coupled with switch module one end and the described pulse output end of described high-speed switch parts by tandem high pressure resistance, described on-off circuit other end ground connection, described synchronization pulse source couples opening or closing of the described switch module to control described high-speed switch parts with the trigger module of described high-speed switch parts；
Described main circuit includes main pulse input, main dc power supply, main circuit the first outfan, main circuit the second outfan；
Described main pulse input couples with described driving pulse outfan, described main pulse input is coupled by the first end of main circuit the first filtration module and the first diverter and the second diverter, second end of described first diverter couples with described main circuit the second outfan, and the second end of described second diverter couples with described main circuit the first outfan.
The drop-down pulse generating unit of high pressure the most according to claim 1, it is characterised in that described tandem high pressure resistance includes the first high-tension resistive and second high-tension resistive of series connection.
The drop-down pulse generating unit of high pressure the most according to claim 2, it is characterised in that there is between described first high-tension resistive and described second high-tension resistive main circuit the first filtration module.
The drop-down pulse generating unit of high pressure the most according to claim 3, it is characterised in that described main circuit the first filtration module includes multiple shunt capacitance.
The drop-down pulse generating unit of high pressure the most according to claim 2, it is characterised in that described second high-tension resistive is parallel with the second stabilivolt (D2).
The drop-down pulse generating unit of high pressure the most according to claim 1, it is characterised in that described high-speed switch parts are HTS150 high-speed switch.
The drop-down pulse generating unit of high pressure the most according to claim 1, it is characterised in that described main circuit the first filtration module includes multiple series capacitance.
The drop-down pulse generating unit of high pressure the most according to claim 1, it is characterised in that described main circuit also includes main circuit the second filtration module, one end ground connection of described main circuit the second filtration module, the other end couples with described main circuit the first outfan.
The drop-down pulse generating unit of high pressure the most according to claim 8, it is characterised in that series resistance between described main circuit the second filtration module and described main circuit the first outfan.
The drop-down pulse generating unit of high pressure the most according to claim 1, it is characterised in that the first end of described first diverter and described second diverter passes through resistance and inductance component ground connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610431069.9A CN105915102A (en) | 2016-06-17 | 2016-06-17 | High-voltage pull-down pulse generation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610431069.9A CN105915102A (en) | 2016-06-17 | 2016-06-17 | High-voltage pull-down pulse generation device |
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| CN201610431069.9A Pending CN105915102A (en) | 2016-06-17 | 2016-06-17 | High-voltage pull-down pulse generation device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202550984U (en) * | 2012-03-16 | 2012-11-21 | 江苏天瑞仪器股份有限公司 | Pulse generator, high-voltage pulse circuit and laser analysis ion source device |
| JP2013123574A (en) * | 2011-12-15 | 2013-06-24 | Toto Ltd | Heated toilet seat device |
| CN205693579U (en) * | 2016-06-17 | 2016-11-16 | 江苏天瑞仪器股份有限公司 | A kind of drop-down pulse generating unit of high pressure |
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2016
- 2016-06-17 CN CN201610431069.9A patent/CN105915102A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013123574A (en) * | 2011-12-15 | 2013-06-24 | Toto Ltd | Heated toilet seat device |
| CN202550984U (en) * | 2012-03-16 | 2012-11-21 | 江苏天瑞仪器股份有限公司 | Pulse generator, high-voltage pulse circuit and laser analysis ion source device |
| CN205693579U (en) * | 2016-06-17 | 2016-11-16 | 江苏天瑞仪器股份有限公司 | A kind of drop-down pulse generating unit of high pressure |
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Effective date of registration: 20200714 Address after: No.5, Taikang Road, building 38, Jianqiao Industrial Park, Dadukou District, Chongqing Applicant after: Chongqing topu Bioengineering Co., Ltd Address before: 215347 Tian Tian Industrial Park, No. 1888 Zhonghua Garden Road, Yushan Town, Kunshan, Jiangsu, Suzhou Applicant before: Jiangsu Tianrui Instrument Co.,Ltd. |
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Application publication date: 20160831 |