CN103878466A - Direct-current-reactor Combination Coupling Coils - Google Patents
Direct-current-reactor Combination Coupling Coils Download PDFInfo
- Publication number
- CN103878466A CN103878466A CN201310565641.7A CN201310565641A CN103878466A CN 103878466 A CN103878466 A CN 103878466A CN 201310565641 A CN201310565641 A CN 201310565641A CN 103878466 A CN103878466 A CN 103878466A
- Authority
- CN
- China
- Prior art keywords
- core
- direct current
- coupling coil
- coiling
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/303—Clamping coils, windings or parts thereof together
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
Abstract
The present invention provides a direct-current-reactor combination coupling coils (11), even in larger pressure secondary winding winding (18) will not damage 1 core (15) and primary winding (16).The invention of the coupling coil (11) and used as dc reactor startup in welding arc as the coupling coil, after the welding arc starting as dc reactor, and possess: made of the formation of cylindrical ferrite core 1 core (15), the primary winding (16), the profile is formed of words by has the concave part of silicon steel plate (17 a) 2 (17), and the secondary winding (18).Through winding around the core (15) 1 of the primary winding (16), the primary winding (15) (16) winding in 1 core set to become one of the structure to the concave part (a) 17, in the second core winding around the secondary winding is produced.As a result, able to form a pre-determined pressure appropriate secondary winding winding in around 2 core.
Description
Technical field
The present invention relates to be used in the coupling coil that is also used as direct current reactor after being enhanced in power supply for TIG (Tungsten Inert Gas) welding.
Background technology
Fig. 5 is the figure that represents the coupling coil that is also used as direct current reactor for TIG welding power supply of prior art.In the figure, the 1st core 1 that is also used as the coupling coil 4 of direct current reactor is the core that has used the material that permeability also can not decline in the case of frequency domain more than 20MHz for example, for example, be ferrite core.The 2nd core 2 is to have used the core that also can guarantee the material of high permeability in the situation that for example about 0.1MHz, for example stacked core (pile iron core) for being made up of silicon steel plate.These the 1st cores 1 and the 2nd core 2 are lined up and formed fit core 3, reel around this zoarium core 3 elementary coiling 5 of overlapped high-frequency voltage, around this elementary coiling 5, insulating materials 6 is set, around this insulating materials 6, reels and passed into the secondary rolling thread 7 of welding current.
The above-mentioned coupling coil 4 that is also used as direct current reactor, in the time that welding arc starts, as moving taking the 1st core 1 as the coupling coil of fit core 3, after welding arc starts, conduct is moved taking the 2nd core 2 as the direct current reactor of fit core 3., by arranging the 1st core 1 and the 2nd core 2, thereby formed the coupling coil that is also used as direct current reactor 4 (for example, with reference to patent documentation 1) of the function that possesses direct current reactor and coupling coil.
Formerly technical literature
Patent documentation
Patent documentation 1: Japanese kokai publication hei 2-200377 communique
Summary of the invention
(inventing problem to be solved)
The coupling coil that is also used as direct current reactor 4 of above-mentioned prior art, the elementary coiling 5 of coiling around the fit core 3 of the 1st core 1 and the 2nd core 2 being arranged and obtain, around this elementary coiling 5 across insulating materials 6 coiling secondary rolling threads 7.So because can stream super-high-current secondary rolling thread be thick and hard coiling in secondary rolling thread, thereby exerting pressure of coil winding machine need to be by coiling secondary rolling thread 7 time be set greatlyr.In this case, because of for the 1st core 1 that is made up of ferrite core is more crisp, so easily rupture in the time imposing the exerting pressure of secondary rolling thread 7.In addition, thus be that thick and hard this situation of coiling is relative with the large electric current secondary rolling thread that can flow in secondary rolling thread, so be thin coiling because elementary coiling 5 is only applied to the elementary coiling 5 of high frequency voltage.In this case, if around elementary coiling 5 coiling secondary rolling thread 7, the unfavorable condition that exists exerting pressure of secondary rolling thread 7 can make elementary coiling 5 break or can make the insulating paper of elementary coiling 5 break.
On the contrary, if the exerting pressure of coil winding machine during by coiling secondary rolling thread 7 set littlely, because secondary rolling thread 7 can not be closely contacted in the stacked core as the 2nd core 2, thereby each coiling of secondary rolling thread 7 is easily movable.In the coupling coil 4 that is also used as direct current reactor moves as direct current reactor, because the electric current of the secondary rolling thread 7 of flowing through is large, its electromagnetic force is also large, thereby each coiling of secondary rolling thread 7 attracts each other, thereby the distance of winding department diminishes.In this case, because concentrating on, heating attracts each other and the winding department of close secondary rolling thread 7, so there are the misgivings that secondary rolling thread 7 can burning.
Even if the object of the present invention is to provide a kind of coupling coil that is also used as direct current reactor that also can not damage the 1st core and elementary coiling with the coiling secondary rolling thread of exerting pressure more greatly.
(for solving the means of problem)
In order to solve the problems of the technologies described above, the invention of technical scheme 1 is a kind of coupling coil that is also used as direct current reactor, for TIG welding power supply, in the time that starting, welding arc moves as coupling coil, after starting, welding arc moves as direct current reactor, it is characterized in that possessing: by the 1st core that is formed as columned ferrite core and forms; Elementary coiling; Section is formed as the 2nd core that the silicon steel plate by having recess of コ word shape forms; And secondary rolling thread, described in be also used as direct current reactor coupling coil by the described elementary coiling of reeling around described the 1st core, described elementary coiling is wound in to the structure that described the 1st core becomes one is set to described recess, the described secondary rolling thread of coiling is produced out around described the 2nd core.
The invention of technical scheme 2 is in the coupling coil that is also used as direct current reactor described in technical scheme 1, it is characterized in that, be wound in described the 1st core and mode that the periphery of structure that becomes one and the inner face of described recess contact has formed described recess according to described elementary coiling.
(invention effect)
The coupling coil that is also used as direct current reactor of the present invention, even if be set as exerting pressure of the coil winding machine of coiling secondary rolling thread optimum value and also can not damage the 1st core and elementary coiling with the coiling secondary rolling thread of exerting pressure more greatly.
Brief description of the drawings
Fig. 1 is the block diagram that has used the TIG welding power supply of the coupling coil that is also used as direct current reactor of the present invention.
Fig. 2 has used the high frequency of the TIG welding power supply of the coupling coil 11 that is also used as direct current reactor of the present invention to produce the block diagram of circuit HF.
Fig. 3 is the figure of the structure of the 1st core 15, elementary coiling 16 and the 2nd core 17 of the explanation coupling coil 11 that is also used as direct current reactor of the present invention.
Fig. 4 is the figure of the structure of the explanation coupling coil 11 that is also used as direct current reactor of the present invention.
Fig. 5 is the figure that is used in the coupling coil that be also used as direct current reactor of TIG welding in power supply that represents prior art.
Detailed description of the invention
[embodiment 1]
Based on embodiment, with reference to accompanying drawing, working of an invention mode is described.Fig. 1 is the block diagram that has used the TIG welding power supply of the coupling coil that is also used as direct current reactor of the present invention.In the figure, TIG welding with the electric power main circuit PM of power ps using the source power supply (omitting diagram) of 3 phase 200V etc. as inputting, carry out the output control based on inverter control according to driving signal Dv described later, and output is suitable for welding current Iw and the weldingvoltage Vw of arc welding.
Although omitted diagram, electric power main circuit PM be configured to for example comprise to source power supply carry out a rectifier of rectification, to the direct current after being rectified carry out level and smooth capacitor, by the DC converting after smoothed become the inverter circuit of high-frequency ac, high-frequency ac step-down is become to be suitable for arc welding voltage high frequency transformer and to carried out the secondary rectifier of rectification by the high-frequency ac after step-down.In the time that welding arc starts, make electrode 13 and the mother metal W starting the arc non-contiguously.For this reason, in by the direct current after electric power main circuit PM rectification, the high frequency voltage that high frequency generation circuit HF produces is applied between welding torch 12 and mother metal W by being also used as the coupling coil 11 of direct current reactor, produces thus electric arc.After welding arc starts, smoothed by being also used as the coupling coil 11 of direct current reactor by the direct current after electric power main circuit PM rectification.
Cleaning (cleaning) unit CU is the unit in order effectively to arrange to electric arc 14 transition from high-frequency spark, is made up of resistance and capacitor.Be accumulated in the electric charge in the capacitor of cleaning unit CU, with spark discharge simultaneously and promptly flow to the circuit of electric arc 14, to supplement the undercurrent from electric power main circuit PM, thus can be stably to electric arc 14 transition.
The current settings signal Ir of current setting circuit IR output desired value.Current detection circuit ID detects welding current Iw, and output electric current measure signal Id.Error amplifying circuit IA amplifies the error between above-mentioned current settings signal Ir and above-mentioned current detection signal Id, and output error amplifying signal Ia.Drive circuit DV carrys out output drive signal Dv according to above-mentioned error amplification signal Ia.Thus, welding current Iw is controlled so as to the value of current settings signal Ir.
Fig. 2 has used the high frequency of the TIG welding power supply of the coupling coil 11 that is also used as direct current reactor of the present invention to produce the block diagram of circuit HF.In the figure, illustrate that high frequency produces the action of circuit HF.If omitted illustrated welding torch switch connection (ON), enabling signal St is input to AND door.Now, because the current detection signal Id shown in Fig. 1 is not input to NOT door, so the output signal S1 of NOT door is high level (HIGH), the output signal S2 of its result AND door is high level.Afterwards, thus switch SW using the output signal S2 of AND door as input in on-state.If switch SW becomes on-state, the electric power of commercial ac power source AC is passed into, thereby is carried out rectification by full-wave rectifying circuit FB.Due to by the electric power after full-wave rectifying circuit FB rectification, and via capacitor C1 streaming current between the terminal 1 of kickback transformer FT and terminal 2, thereby capacitor C1 is charged.
Charged and the voltage of capacitor C1 has reached in the voltage of predetermining at capacitor C1, the Zener diode of connecting under certain voltage becomes conducting state (ON).If Zener diode becomes conducting state, thyristor SR is by scratch start, and the voltage that charges to capacitor C1 is applied between the terminal 2 and terminal 1 of kickback transformer FT via thyristor SR.Its result, the energy that charges to capacitor C1 moves in kickback transformer FT.
If capacitor C1 discharges completely, due to the inductance of elementary coiling and the LC resonance of capacitor C1 of kickback transformer FT, and in the diode D1 being connected in parallel with thyristor SR streaming current, thereby thyristor SR is reverse biased and becomes cut-off state (OFF).Meanwhile, produce as high-tension flyback voltage in primary side coiling place of kickback transformer FT.The flyback voltage producing, via the diode D2 that is built in kickback transformer FT, charges to the capacitor C2 being connected with the primary side of kickback transformer FT.Repeatedly carry out above-mentioned capacitor C1 and be charged to action only by capacitor C2 after charging.Within the half period of commercial ac power source, repeatedly carry out tens times left and right.
Be charged to action only by repeatedly carrying out above-mentioned capacitor C1 by capacitor C2 after charging, if the voltage of capacitor C2 exceedes the discharge ionization voltage of discharging gap DG thus, streaming current at capacitor C2, discharging gap DG and in being also used as the closed loop of elementary coiling of the coupling coil 11 of direct current reactor, thus high frequency voltage applied to the two ends of elementary coiling of the coupling coil 11 that is also used as direct current reactor.The high frequency voltage applying is applied between the welding torch 12 shown in Fig. 1 and mother metal W via the secondary rolling thread of the coupling coil 11 that is also used as direct current reactor, produces thus electric arc.
If produce electric arc and passed into welding current, the current detection circuit ID shown in Fig. 1 detects welding current output electric current measure signal Id.If this current detection signal Id is input to NOT door, the output signal S1 of NOT door becomes low level (LOW), and the output signal S2 of AND door also becomes low level.Its result, thus switch SW becomes off-state using the output signal S2 of AND door as input, has stopped the generation of high frequency voltage.
Fig. 3 is the figure of the structure of the 1st core 15, elementary coiling 16 and the 2nd core 17 of the explanation coupling coil 11 that is also used as direct current reactor of the present invention, Fig. 3 (A) is front view, Fig. 3 (B) is top view, Fig. 3 (C) is side view, and Fig. 3 (D) is stereogram.In the figure, the 1st core 15 being made up of ferrite core, has used the material that permeability also can not decline in the case of frequency domain more than 20MHz for example and has been formed cylindric.The 2nd core 17 being made up of silicon steel plate is to have used in the situation that for example about 0.1MHz still to keep the material of high permeability and section to be formed the stacked core of コ word shape, and has the recess 17a that is formed コ word shape.For example 5 circles of the elementary coiling 16 of coiling around the 1st core 15.And elementary coiling 16 is wound in the 1st core and the structure that becomes one, is embedded into and is fixed in the recess 17a of the 2nd core.
Be wound in the 1st core and mode that the structure that becomes one is fixed in recess 17a according to elementary coiling 16, and be wound in the 1st core 15 and mode that the periphery of the structure that becomes one contacts with the inner face of recess 17a according to elementary coiling 16, formed recess 17a.On the other hand, be wound in the 1st core 15 and for the structure that becomes one with respect to elementary coiling 16, if there is gap between the structure of this one and the inner face of recess 17a, can not the 2nd core 17 be set greatlyr due to the maximization for fear of the source of welding current, thereby the area of section of the 2nd core diminishes, the self-induction of the 2nd core diminishes.In order to increase the area of section of the 2nd core 17 as far as possible, be wound in the 1st core 15 and mode that the periphery of the structure that becomes one contacts with the inner face of recess 17a has formed recess 17a according to elementary coiling 16.
Fig. 4 is the figure of the structure of the explanation coupling coil 11 that is also used as direct current reactor of the present invention, and Fig. 4 (A) is top view, and Fig. 4 (B) is front view, and Fig. 4 (C) is side view.In the figure, as described with reference to Fig. 2, the elementary coiling 16 of coiling around the 1st core 15, the 1st core 15 of the elementary coiling 16 of having reeled is embedded into and is fixed in the recess 17a of the 2nd core.Afterwards, around the 2nd core 17, secondary rolling thread 18 separates the interval of predetermining, with for example 18 circles of reeling of exerting pressure of predetermining.
Below, action is described.In the time that welding arc starts, if will omit illustrated welding torch switch connection, the high frequency voltage that high frequency generation circuit HF produces is applied to the elementary coiling 16 of the coupling coil 11 that is also used as direct current reactor, and the 1st core 15 forming via ferrite core is applied to secondary rolling thread 18.Be now non-loaded state, do not pass into welding current.Now, because being failure to actuate under high frequency for the 2nd core 17 being formed by silicon steel plate, so become in fact the structure of the 1st core 15, elementary coiling 16 and secondary rolling thread 18.Its result, moves as coupling coil.
Afterwards, if passed into welding current, high frequency generation circuit HF becomes off-state, in the secondary rolling thread 18 of coupling coil 11 that is also used as direct current reactor, has passed into large electric current.Now, the 1st core 15 being made up of ferrite core is magnetic saturation, so do not move as core.Thereby, be equivalent in fact the situation of the secondary rolling thread 18 of having reeled on the 2nd core 17 being formed by silicon steel plate.Its result, moves as direct current reactor.
Therefore, by combining the 1st core 15 and the 2nd core 17, thereby formed the coupling coil that is also used as direct current reactor 11 of the function that possesses direct current reactor and coupling coil.And the structure becoming one because elementary coiling 16 is wound in the 1st core 15 is embedded into and is fixed in the recess 17a of the 2nd core, so the 1st core 15 is protected by the 2nd core 17.Afterwards, with exerting pressure more greatly of predetermining, secondary rolling thread 18 is wound in to the 2nd core 17 around.
Its result, the coupling coil 11 that is also used as direct current reactor of the present invention, even if be set as exerting pressure of the coil winding machine of coiling secondary rolling thread 18 optimum value and also can not damage the 1st core 15 and elementary coiling 16 with the coiling secondary rolling thread 18 of exerting pressure more greatly.Because secondary rolling thread 18 is wound in the 2nd core 17 around with exerting pressure of predetermining, so secondary rolling thread 18 is closely contacted on the 2nd core 17 around, thereby when flowing through larger electric current make its electromagnetic force large in secondary rolling thread 18, each coiling of secondary rolling thread 18 also can not attract each other, therefore can maintain the interval of each coiling of secondary rolling thread 18, heating can concentrations yet, does not have the misgivings that secondary rolling thread 18 can burning.
In the 2nd core 2 of the coupling coil that is also used as direct current reactor 4 and the combination of the 1st core 1 of the prior art shown in Fig. 5, because the 2nd core 2 and the 1st core 1 just arrange contiguously, thus the periphery of the fit core 3 being formed by the 2nd core 2 and the 1st core 1 be shaped as distortion.Thereby, the interval that is difficult to maintain each coiling of secondary rolling thread 7 around fit core 3 secondary rolling thread 7 of reeling.But, the coupling coil that is also used as direct current reactor 11 of the present invention because by secondary rolling thread 18 be wound in be formed コ word shape the 2nd core 17 around, so the secondary rolling thread 18 that is easy to reel has improved production efficiency.
Symbol description
1 the 1st core
2 the 2nd cores
3 fit cores
4 are also used as the coupling coil of direct current reactor
5 elementary coilings
6 insulating materials
7 secondary rolling threads
11 are also used as the coupling coil of direct current reactor
12 welding torches
13 electrodes
14 electric arcs
15 the 1st cores
16 elementary coilings
17 the 2nd cores
The recess of 17a the 2nd core
18 secondary rolling threads
C1 capacitor
C2 capacitor
CU clears up unit
D1 diode
D2 diode
DG discharging gap
DV drive circuit
Dv drives signal
FB full-wave rectifying circuit
FT kickback transformer
HF high frequency produces circuit
IA error amplifying circuit
Ia error amplification signal
ID current detection circuit
Id current detection signal
IR current setting circuit
Ir current settings signal
Iw welding current
PM electric power main circuit
PS TIG welding power supply
S1 output signal
S2 output signal
SR thyristor
St enabling signal
SW switch
Vw weldingvoltage
W mother metal
Claims (2)
1. one kind is also used as the coupling coil of direct current reactor, for TIG welding power supply, in the time that starting, welding arc moves as coupling coil, after starting, welding arc moves as direct current reactor, the described coupling coil that is also used as direct current reactor is characterised in that to possess:
By the 1st core that is formed as columned ferrite core and forms;
Elementary coiling;
Section is formed as the 2nd core that the silicon steel plate by having recess of コ word shape forms; With
Secondary rolling thread,
The described coupling coil that is also used as direct current reactor by the described elementary coiling of reeling around described the 1st core, described elementary coiling is wound in to the structure that described the 1st core becomes one is set to described recess, the described secondary rolling thread of coiling is produced out around described the 2nd core.
2. the coupling coil that is also used as direct current reactor according to claim 1, is characterized in that,
Be wound in described the 1st core and mode that the periphery of structure that becomes one and the inner face of described recess contact has formed described recess according to described elementary coiling.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012276665A JP2014120705A (en) | 2012-12-19 | 2012-12-19 | Coupling coil also used as dc reactor |
| JP2012-276665 | 2012-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103878466A true CN103878466A (en) | 2014-06-25 |
| CN103878466B CN103878466B (en) | 2016-11-02 |
Family
ID=50947771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310565641.7A Expired - Fee Related CN103878466B (en) | 2012-12-19 | 2013-11-14 | It is also used as the coupling coil of direct current reactor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2014120705A (en) |
| CN (1) | CN103878466B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02200377A (en) * | 1989-01-31 | 1990-08-08 | Matsushita Electric Ind Co Ltd | Coupling coil in common use as dc reactor |
| CN1146387A (en) * | 1995-06-23 | 1997-04-02 | 株式会社三社电机制作所 | Electric arc-welding machine |
| CN201191552Y (en) * | 2008-05-20 | 2009-02-04 | 上海鹰峰电子科技有限公司 | DC reactor |
| CN201278311Y (en) * | 2008-09-19 | 2009-07-22 | 上海沪工电焊机制造有限公司 | High frequency coupling reactor |
| CN101697306A (en) * | 2009-10-16 | 2010-04-21 | 无锡市南方电器制造有限公司 | Direct current reactor for gas-shielded welder |
| CN101859629A (en) * | 2009-04-02 | 2010-10-13 | 株式会社大亨 | Coupling coil and arc welder with this coupling coil |
-
2012
- 2012-12-19 JP JP2012276665A patent/JP2014120705A/en active Pending
-
2013
- 2013-11-14 CN CN201310565641.7A patent/CN103878466B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02200377A (en) * | 1989-01-31 | 1990-08-08 | Matsushita Electric Ind Co Ltd | Coupling coil in common use as dc reactor |
| CN1146387A (en) * | 1995-06-23 | 1997-04-02 | 株式会社三社电机制作所 | Electric arc-welding machine |
| CN201191552Y (en) * | 2008-05-20 | 2009-02-04 | 上海鹰峰电子科技有限公司 | DC reactor |
| CN201278311Y (en) * | 2008-09-19 | 2009-07-22 | 上海沪工电焊机制造有限公司 | High frequency coupling reactor |
| CN101859629A (en) * | 2009-04-02 | 2010-10-13 | 株式会社大亨 | Coupling coil and arc welder with this coupling coil |
| CN101697306A (en) * | 2009-10-16 | 2010-04-21 | 无锡市南方电器制造有限公司 | Direct current reactor for gas-shielded welder |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014120705A (en) | 2014-06-30 |
| CN103878466B (en) | 2016-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101802890B1 (en) | Secondary-side power reception circuit for contactless power feed equipment | |
| JP5488505B2 (en) | Contactless power supply equipment | |
| JP2014224493A (en) | Ignition device | |
| CN105632712A (en) | High-frequency, high-voltage and high-power rectification transformer | |
| US20140028250A1 (en) | Charging apparatus for lead storage battery | |
| CN114050733B (en) | Lifting arc striking anti-sticking welding control circuit and welding power supply | |
| CN104641448A (en) | Apparatus for generating and maintaining plasma for plasma processing | |
| CN202411646U (en) | Guidance arc current circuit for plasma cutting power supply | |
| CN103878466A (en) | Direct-current-reactor Combination Coupling Coils | |
| WO2012098867A1 (en) | Power supply device for non-contact charging device | |
| CN102126067A (en) | Arc initiating device of TIG and plasma cutter | |
| KR102602503B1 (en) | Plasma reforming apparatus for a target gas under atmospheric pressure | |
| CN104221266A (en) | Switching power source device | |
| JP2004249331A (en) | Arc welding machine | |
| CN102554404A (en) | Guide arc current circuit for plasma cutting power supply | |
| WO2012110709A3 (en) | Power supply with interference suppression, and method for operating a power supply | |
| CN107947601B (en) | High-frequency high-voltage arc striking device | |
| CN101859629A (en) | Coupling coil and arc welder with this coupling coil | |
| JP2016135044A (en) | Non-contact power transmission device | |
| US11235411B2 (en) | Welding power supply with interleaved inverter circuitry | |
| JP6583036B2 (en) | Wireless power receiving apparatus and wireless power transmission system | |
| KR101598170B1 (en) | Hybrid outputting apparatus for inverter welder | |
| KR101937167B1 (en) | A reduction device of the electric power loss | |
| CN207888033U (en) | A kind of high-frequency arc strike device | |
| KR101664987B1 (en) | High-compressing pulse signal supply apparatus for reactor having improved energy efficiency |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161102 Termination date: 20171114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |