CN106602918A - 32KV electron gun pulse modulation power supply - Google Patents
32KV electron gun pulse modulation power supply Download PDFInfo
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- CN106602918A CN106602918A CN201611051102.1A CN201611051102A CN106602918A CN 106602918 A CN106602918 A CN 106602918A CN 201611051102 A CN201611051102 A CN 201611051102A CN 106602918 A CN106602918 A CN 106602918A
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- power supply
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- modulation power
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Classifications
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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
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention relates to a 32KV electron gun pulse modulation power supply and relates to the field of electron gun pulse modulation. The purpose of the invention is to solve a problem that a traditional electronic gun modulation power supply is large in size, not continuously adjustable in a wide range, and low in efficiency. The modulation power supply comprises a pre-stage modulation power supply, a modulator, a pulse transformer and a controller. The voltage signal output end of the pre-stage modulation power supply is connected with the voltage signal input end of the modulator and the voltage signal input end of the controller. The control signal output end of the controller is connected with the control signal input end of the modulator. The modulation signal output end of the modulator is connected with the modulation signal input end of the pulse transformer. The pulse transformer outputs pulse high voltage. The voltage obtained by the pre-modulated power supply is converted into the pulse high voltage through the switching of and off of the modulator and the pulse transformer. The 32KV electron gun pulse modulation power supply adopts a full-bridge phase shifting mode to realize the ZVS of a power tube, thereby reducing the switching loss and achieving efficiency up to over 90%.
Description
Technical field
The present invention relates to electron gun impulse modulation field.
Background technology
Electron gun is that one kind uses photoelectric effect, highfield is set up in resonator cavity using High-Power Microwave, to accelerate
The electronics launched by the hot cathode positioned at resonance intracavity, makes electronics quickly reach the device of relativistic velocity.Its needs has：1.
More than tens of kilovolts of accelerating potential ensures the energy of electric field.2. enough pulse powers can be given.
At present some electron gun impulse modulation power supplys can export the voltage strength for meeting electron gun demand, but volume is general
All over very big, how to design such high voltage power supply and safe and reliable work be able to will face under so narrow volume
A difficult problem.
The content of the invention
The technical problem to be solved is to provide a kind of 32KV electron guns impulse modulation power supply, it is therefore intended that solve
Conditional electronic rifle modulation power source volume is big, it is impossible to wide scope continuously adjustabe, the low problem of efficiency.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of 32KV electron guns impulse modulation power supply, including
Prime modulation power source, manipulator, pulse transformer and controller,
The voltage signal output end of prime modulation power source and the voltage signal inputs of manipulator and the electricity of controller
Pressure signal input part connection；
The control signal output of controller is connected with the control signal input of manipulator；
The modulated signal outfan of manipulator is connected with the modulated signal input of pulse transformer；
Pulse transformer exports high voltage pulse.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, the prime modulation power source includes rectification circuit, soft starting circuit, full-bridge phase shifting inverter circuit, transformation
Device and voltage doubling rectifing circuit,
The rectified signal outfan of the rectification circuit is connected with the rectified signal input of soft starting circuit,
The enabling signal outfan of soft starting circuit is connected with the enabling signal input of full-bridge phase shifting inverter circuit,
The inverter signal outfan of full-bridge phase shifting inverter circuit is connected with the former limit of transformator,
The secondary of transformator is connected with the inverter signal input of voltage doubling rectifing circuit,
The rectified signal outfan of voltage doubling rectifing circuit is connected with the rectified signal input of controller,
The control signal output of controller is connected with the control signal input of full-bridge phase shifting inverter circuit.
Further, the rectification circuit is connected including four diode D1 to D4, wherein D1 and D3, and D2 and D4 connects, and two
Individual series circuit is in parallel.
Further, the full-bridge phase shifting inverter circuit is connected including four groups of switching tube Q1 to Q4, wherein Q1 and Q4, Q2 and Q3
Series connection, two series circuit parallel connections.
Further, the no-load voltage ratio of the transformator is 1:20.
Further, LC filter circuits are also in series between the soft starting circuit and full-bridge phase shifting inverter circuit.
Further, the controller controls the dutycycle of pwm signal using Voltage Feedback mode, exports two phase contrasts
180 ° of PWM driving pulses control respectively two switch tubes Q1 and Q4 and Q2 Jing after isolation is amplified and Q3 is simultaneously turned on or cut
Only, DC input voitage is transformed into into the former limit that high frequency square wave alternating voltage is added to transformator, in the secondary Jing full-bridges of transformator
Shifting inversion circuit output.
Further, the controller is SG1525 controllers.
Further, the former limit of the transformator is in series with capacitance.
Beneficial effect：The voltage that the present invention obtains prime modulation power source, turns off and arteries and veins through controlling opening for manipulator
Rush transformator and obtain high voltage pulse.The present invention adopts full-bridge phase shifting pattern, makes power tube realize ZVS, damages so as to reduce switch
Consumption, efficiency is up to more than 90%.The front step voltage that modulation power source is obtained opens shut-off, Jing high pressure through control modulation switch
Pulse transformer obtains high pressure.Full-bridge rectification is constituted by four diodes, by the AC rectification of 220V/50Hz into direct current, is passed through
Soft starting circuit exports again LC filter circuits, is then added in and constitutes phase-shifting full-bridge translation circuit two ends by four groups of switching tubes, becomes
The exchange for changing 50kHz into obtains the voltage of prime about 4kV by transformator and high-frequency rectification circuit output, through manipulator and arteries and veins
Transformer boost is rushed to 32kV.
The advantage of the power supply is the parameter that make use of transformator, realizes high voltage power supply miniaturization, and size only has 4U, work
Make voltage high, switching loss is little, improves the efficiency of power supply.With traditional high voltage power supply ratio, program small volume, start from scratch
Wide scope continuously adjustabe, efficiency and reliability are high.
Description of the drawings
Fig. 1 is the principle schematic of the electron gun described in the embodiment of the present invention；
Fig. 2 is the principle schematic figure of the modulation power source described in the embodiment of the present invention；
Fig. 3 is the circuit diagram of the prime modulation power source described in the embodiment of the present invention.
Specific embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
It is non-for limiting the scope of the present invention.
The operation principle of electron gun is illustrated in figure 1, the performance parameter of electron gun power supply directly influences electron gun electronics
The main performance index such as efficiency, life-span, gain, linear, it requires electron gun power good, reliable, and wide scope is adjustable.
The present embodiment proposes a kind of 32KV electron guns impulse modulation power supply, as shown in Fig. 2 including prime modulation power source, adjusting
Device processed, pulse transformer and controller,
The voltage signal output end of prime modulation power source and the voltage signal inputs of manipulator and the electricity of controller
Pressure signal input part connection；
The control signal output of controller is connected with the control signal input of manipulator；
The modulated signal outfan of manipulator is connected with the modulated signal input of pulse transformer；
Pulse transformer exports high voltage pulse.
The voltage that prime modulation power source is obtained, open shut-off and the pulse transformer through controlling manipulator obtains pulse
High pressure.
Wherein prime modulation power source is by rectification circuit, soft starting circuit, full-bridge phase shifting inverter circuit, transformator and multiplication of voltage
Rectification circuit is constituted.Power input is added in switching tube composition phase-shifting full-bridge translation circuit two by soft starting circuit, filter circuit
End, the exchange for being transformed into 50kHz obtains the voltage of prime about 4kV by transformator and high-frequency rectification circuit output, through modulation
Device and pulse transformer boost to 32kV.
Understand that the power requirement output voltage is up to 32kV by analytical parameters, but but require small volume, export from zero
Start continuously adjustabe, how to design such high voltage power supply and can safe and reliable work will be under so narrow volume
The difficult problem for facing.The following is several design difficulties analysis of the power supply：
The high voltage power supply has necessarily become smaller, high frequency, and efficiency must be very high.Series resonance soft switch technique is combined
The advantage of harmonic technology and pulse modulation technology can be very good to meet above-mentioned requirements.
Serial-resonant Switching Technique is exactly, using the principle of resonance, to press the electric current (or voltage) in switching device
The change of sinusoidal or quasi sine rule.Resonance is produced when changer master switch carries out the change of current, voltage and electricity on master switch is forced
Stream vanishing, so as to provide the switching context of a no-voltage or zero current for master switch.Serial-resonant switch converters are former
Can be with the equivalent series resonant circuit into a strip resistance load in reason.
It is necessary using soft switch transducer from reducing power volume, reducing heating and reducing the angle of EMI.But
If realizing from very low voltage starting, wide scope is adjustable, and best selection is exactly full-bridge phase shifting circuit, when Sofe Switch is realized
Energy is provided by secondary inductance and former limit inductance, and it can realize the ZVT change of current in power device commutation moment, and reduction is opened
Close loss.Therefore ZVS can be realized in wider loading range.
Phase-shifting full-bridge ZVT (ZVS) pwm converter maintain quasi-resonance contactor loss it is little, work in fixation
The advantage of switching frequency, and compared with common hard switching full-bridge circuit, increase only a resonant inductance.In the change of current using humorous
The ZVT (ZVS) of the existing switching device of jolt ramming, eliminates switching loss, improves circuit efficiency, circuit is operated in
Higher frequency.The ZVS of all switching devices is realized in big loading range, can be in one big electricity of transformer primary side series connection
Sense, or increase transformer leakage inductance.The increase of inductance has considerable influence to transducer performance, can cause the loss of dutycycle,
Meanwhile, there is reversely restoring process in output rectifier tube, on output rectifier tube due to voltage spikes and voltage oscillation can be produced, this needs
Compromise considers that the parameter of resonance circuit is selected.
The present embodiment adopts full-bridge phase shifting pattern, makes power tube realize ZVS, and so as to reduce switching loss, efficiency is reachable
More than 90%.The front step voltage that modulation power source is obtained opens shut-off, Jing high voltage pulse transformers through control modulation switch
Obtain high pressure.Prime kilovolt power supply is by rectification circuit, soft starting circuit, full-bridge phase shifting inverter circuit, transformator, voltage multiplying rectifier electricity
Road and controller are constituted.Full-bridge rectification is constituted by four diodes, by the AC rectification of 220V/50Hz into direct current, by soft
Start-up circuit exports again LC filter circuits, is then added in and constitutes phase-shifting full-bridge translation circuit two ends by four groups of switching tubes, conversion
Exchange into 50kHz obtains the voltage of prime about 4kV by transformator and high-frequency rectification circuit output, through manipulator and pulse
Transformer boost is to 32kV.
System main circuit adopts ZVS Full-bridge phase-shift topological structure.The simplification of front level power supply is obtained into main circuit substantially former
Reason is as shown in figure 3, V1 to V4 is main switch in figure；C1 to C4 is switching tube two ends shnt capacitor；And C1=C2=C3=
C4, L2 are resonant inductance；Including the leakage inductance of transformator, switch transformer includes two windings, and no-load voltage ratio is 1：20, C5 is transformation
Device secondary distribution capacity conversion is to primary electric capacity.V1 and V3 are simultaneously turned on and turned off, and V2 and V4 is simultaneously turned on and turned off, both
Between drive signal opposite in phase and have certain dead band.
Switching tube V1 and V4 are set as lagging leg, and V2 and V3 is set as leading-bridge.Input rectification circuit have inductance and
Polar capacitor carries out low frequency filtering, obtains stable direct current output.Switch K and R1 composition soft starting circuits, prevent on main circuit
When electric, excessive surge current is produced during polar capacitor initial charge, damage input rectifying bridge.During start, K disconnects, by prolonging
When, during normal operation circuit, K closures.
Because the drive circuit of power switch pipe is inconsistent, the tune of power switch pipe discreteness and voltage error amplifier
Section is acted on so that contain less DC component in the ac square-wave voltage of inverter bridge.The DC component will make high frequency transformer
Magnetic circuit saturation, causes inverter bridge to be burnt.The simple approach for suppressing DC component is to concatenate capacitance in high frequency transformer former limit
C5.L2 is the leakage inductance and resonant inductance sum of transformator, by adjusting L2, it is possible to achieve the ZVT of lagging leg.
Controller is the control core of whole high voltage power supply, and using the method for Voltage Feedback the dutycycle of pwm signal is controlled,
The PWM driving pulses of two 180 ° of phase contrasts of output control respectively two switch tubes Q1, Q4 and Q2, Q3 simultaneously Jing after isolation is amplified
On or off, is transformed into the former limit that high frequency square wave alternating voltage is added to transformator, in the pair of transformator by DC input voitage
Side Jing full-bridge rectifications and LC filtering are exported.Because the voltage and current stress of full bridge structure breaker in middle pipe is relatively small, become
Depressor utilization rate is high, the relatively low switching tube of pressure voltage can be selected in design, with reduces cost.
A reference source inside controller SG1525 is 5.1V, and it is defeated that the reference voltage that foot 16 is exported adds to homophase Jing after partial pressure
Enter to hold foot 2, voltage feedback signal is added to into inverting input foot 1, can be set by adjusting the size of Dead Time resistance R8
The width of Dead Time, R8 is bigger, and dead band is wider.According to the dynamic and static requirement of system, it is appropriate to access between foot 9 and foot 1
Compensation network.Output voltage does not also set up when just being started due to circuit, and now internal error comparator output voltage is higher,
Pwm signal pulsewidth is very big, and output voltage is elevated, and in the soft start foot external capacitor C5 of foot 8, in the starting stage of upper electricity, passes through
Electric capacity charges makes dutycycle gradually be increased by zero, realizes soft start function, it is to avoid ovennodulation of the output voltage in initial start stage
Phenomenon.Can add error protection signal in foot 10, when the current sampling voltage of output current sensor is higher than setting voltage, meeting
Output pulse signal is blocked immediately.After external blockade signal is removed, SG1525 also will could be weighed through a soft start-up process
It is new to start working.The external direct-to-ground capacitance C6 of foot 9 is 0.5uF, suppresses the gain near switching frequency, to eliminate pulse width period not
Symmetry.The reference voltage that foot 16 is exported all is utilized, it is favourable to the precision of voltage regulation.It is 51 that Dead Time adjusts resistance R8
Ω, Dead Time is 1us, and external capacitor C5 is 10uF, and soft-start time is about 0.6s.
Edge is steep before and after drive circuit is required, to reduce the loss of main switch.The design is using forward converter as driving
Circuit, using TC4424 and isolation drive transformator mode, realize controller with the electric isolution for being driven MOSFET grids and
Occur providing protection during excessively stream, this drive circuit has before and after drive waveforms along steep, the characteristics of fast response time, the rise time is only
There is hundreds of nanosecond, considerably reduce the loss of switch, and drive waveforms are good.
ZVS characteristics are obtained in changer full-load range, loss is reduced, volume is reduced, frequency range also compared with
It is little.Design has carried out maximum utilization to parasitic parameters such as the leakage inductances and distribution capacity of transformator, simplify transformator with
The design of power supply.Therefore the circuit topology especially requires higher Special high-voltage power supply in high voltage-small current to power volume
In have higher using value.
The foregoing is only presently preferred embodiments of the present invention, not to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (9)
1. a kind of 32KV electron guns impulse modulation power supply, it is characterised in that including prime modulation power source, manipulator, pulse transforming
Device and controller,
The voltage signal output end of prime modulation power source is believed with the voltage of the voltage signal inputs of manipulator and controller
The connection of number input；
The control signal output of controller is connected with the control signal input of manipulator；
The modulated signal outfan of manipulator is connected with the modulated signal input of pulse transformer；
Pulse transformer exports high voltage pulse.
2. a kind of 32KV electron guns impulse modulation power supply according to claim 1, it is characterised in that the prime modulation electricity
Source includes rectification circuit, soft starting circuit, full-bridge phase shifting inverter circuit, transformator and voltage doubling rectifing circuit,
The rectified signal outfan of the rectification circuit is connected with the rectified signal input of soft starting circuit,
The enabling signal outfan of soft starting circuit is connected with the enabling signal input of full-bridge phase shifting inverter circuit,
The inverter signal outfan of full-bridge phase shifting inverter circuit is connected with the former limit of transformator,
The secondary of transformator is connected with the inverter signal input of voltage doubling rectifing circuit,
The rectified signal outfan of voltage doubling rectifing circuit is connected with the rectified signal input of controller,
The control signal output of controller is connected with the control signal input of full-bridge phase shifting inverter circuit.
3. a kind of 32KV electron guns impulse modulation power supply according to claim 2, it is characterised in that the rectification circuit bag
Four diode D1 to D4, wherein D1 and D3 series connection is included, D2 and D4 connects, two series circuit parallel connections.
4. a kind of 32KV electron guns impulse modulation power supply according to claim 3, it is characterised in that the full-bridge phase shifting is inverse
Become circuit to connect including four groups of switching tube Q1 to Q4, wherein Q1 and Q4, Q2 and Q3 connects, two series circuit parallel connections.
5. a kind of 32KV electron guns impulse modulation power supply according to claim 4, it is characterised in that the change of the transformator
Than for 1:20.
6. a kind of 32KV electron guns impulse modulation power supply according to any one of claim 2 to 5, it is characterised in that described
LC filter circuits are also in series between soft starting circuit and full-bridge phase shifting inverter circuit.
7. a kind of 32KV electron guns impulse modulation power supply according to claim 6, it is characterised in that the controller is adopted
Voltage Feedback mode controls the dutycycle of pwm signal, and the PWM driving pulses for exporting two 180 ° of phase contrasts divide Jing after isolation is amplified
Do not control two switch tubes Q1 and Q4 and Q2 and Q3 is simultaneously turned on or ended, DC input voitage is transformed into into high frequency square wave and is handed over
Stream voltage is added to the former limit of transformator, exports in the secondary Jing full-bridge phase shiftings inverter circuit of transformator.
8. a kind of 32KV electron guns impulse modulation power supply according to claim 7, it is characterised in that the controller is
SG1525 controllers.
9. a kind of 32KV electron guns impulse modulation power supply according to claim 2, it is characterised in that the original of the transformator
While being in series with capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611051102.1A CN106602918A (en) | 2016-11-24 | 2016-11-24 | 32KV electron gun pulse modulation power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611051102.1A CN106602918A (en) | 2016-11-24 | 2016-11-24 | 32KV electron gun pulse modulation power supply |
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| CN106602918A true CN106602918A (en) | 2017-04-26 |
Family
ID=58593173
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| CN201611051102.1A Pending CN106602918A (en) | 2016-11-24 | 2016-11-24 | 32KV electron gun pulse modulation power supply |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171588A (en) * | 2017-06-26 | 2017-09-15 | 北京无线电测量研究所 | A kind of modulator approach and system of the low energy storage broad pulse based on high voltage power supply |
| CN108923653A (en) * | 2018-07-06 | 2018-11-30 | 江苏海明医疗器械有限公司 | A kind of medical electric rifle grid power supply |
| CN109104075A (en) * | 2018-10-23 | 2018-12-28 | 北京无线电测量研究所 | The all solid state rigid pipe modulation circuit of transformer coupling type, modulator approach and modulator |
| WO2022142608A1 (en) * | 2020-12-31 | 2022-07-07 | 华为技术有限公司 | Resonant power source, primary feedback excitation power supply controller and method, and control device |
| CN117811352A (en) * | 2024-03-01 | 2024-04-02 | 南京信息工程大学 | Cathode quick start power supply based on computer control |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107171588A (en) * | 2017-06-26 | 2017-09-15 | 北京无线电测量研究所 | A kind of modulator approach and system of the low energy storage broad pulse based on high voltage power supply |
| CN108923653A (en) * | 2018-07-06 | 2018-11-30 | 江苏海明医疗器械有限公司 | A kind of medical electric rifle grid power supply |
| CN108923653B (en) * | 2018-07-06 | 2019-10-18 | 江苏海明医疗器械有限公司 | A kind of medical electric rifle grid power supply |
| CN109104075A (en) * | 2018-10-23 | 2018-12-28 | 北京无线电测量研究所 | The all solid state rigid pipe modulation circuit of transformer coupling type, modulator approach and modulator |
| WO2022142608A1 (en) * | 2020-12-31 | 2022-07-07 | 华为技术有限公司 | Resonant power source, primary feedback excitation power supply controller and method, and control device |
| CN117811352A (en) * | 2024-03-01 | 2024-04-02 | 南京信息工程大学 | Cathode quick start power supply based on computer control |
| CN117811352B (en) * | 2024-03-01 | 2024-05-14 | 南京信息工程大学 | Cathode quick start power supply based on computer control |
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Application publication date: 20170426 |