CN106425034A - Method for wide input voltage of direct current inverter welding machine and wide input voltage circuit thereof - Google Patents
Method for wide input voltage of direct current inverter welding machine and wide input voltage circuit thereof Download PDFInfo
- Publication number
- CN106425034A CN106425034A CN201611145623.3A CN201611145623A CN106425034A CN 106425034 A CN106425034 A CN 106425034A CN 201611145623 A CN201611145623 A CN 201611145623A CN 106425034 A CN106425034 A CN 106425034A
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- input voltage
- rectification
- field effect
- 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
Classifications
-
- 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
- B23K9/1006—Power supply
- B23K9/1043—Power supply characterised by the electric circuit
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Inverter Devices (AREA)
- Arc Welding Control (AREA)
Abstract
The invention relates to a method for a wide input voltage of a direct current inverter welding machine and a wide input voltage circuit thereof. The wide input voltage circuit contains an inverter circuit commonly used by the welding machine, an output filter circuit and a welding output circuit, and is characterized in that the inverter circuit commonly used by the welding machine, the output filter circuit and the welding output circuit are connected with the wide input voltage circuit; wherein the wide input voltage circuit comprises an AC (alternating current) input end, a rectifying circuit connected with the AC input end; a resistance R3, a resistance R4 and a resistance R5 are connected in series and then connected in parallel with a circuit subjected to rectification; an inductance L1 is connected in series with a field-effect tube Q1 and then connected in parallel with the circuit subjected to the rectification; a resistance R6, a resistance R7 and a resistance R8 are connected in series and then are connected in parallel with a direct current output end circuit, of which the core is added with a voltage stabilizing circuit at the front end of a welding machine inverter circuit; and when the voltage is too high, too low or fluctuated, the voltage can be stabilized within a permissible range after going through a voltage stabilizing circuit, so as to guarantee the normal operation of the welding machine.
Description
Technical field
The present invention relates to a kind of method of DC inverter welding machine wide input voltage and its wide input voltage circuit.
Background technology
DC inverter welding machine is increasingly received by users, but inverter type welder in use will to input voltage
Ask comparison strict, inverter type welder supply voltage is often two kinds of grades in the market, one kind is powered for alternating current 220V, and another kind is
380V powers, and harsher to voltage request, exceeds certain scope when of short duration fluctuation in voltage（Rated voltage ±
10%）, will result in late-class circuit baulk, cause welding process that of short duration breath arc phenomenon occurs, soldered product quality is produced
Raw considerable influence.How to solve the problems, such as that inverter type welder wide range input voltage has just become one to have to solve.
The present invention carries out rectification to input voltage first using one kind, if the voltage after rectification is less than some set
Value, then carry out boosting process to this voltage；If the voltage after rectification is in the range of the left and right of some, this voltage is not entered
Row is processed, if the voltage after rectification, beyond a certain voltage range, carries out blood pressure lowering process to this voltage.Ensure through processing
Voltage stabilization afterwards within a certain range, then carries out inversion, rectification output again to this voltage.
Content of the invention
The invention provides a kind of method of DC inverter welding machine wide input voltage and its wide input voltage circuit, can solve
Certainly welding machine in use due to the fluctuation of the too high or too low even better than input voltage of input voltage causes welding machine cannot be just
The phenomenon often using.Its core is to add voltage stabilizing circuit in welding machine inverter circuit front end, when overtension, too low or fluctuation
When after mu balanced circuit can this voltage stabilization in allowed band it is ensured that the normal work of welding machine.
A kind of method of DC inverter welding machine wide input voltage：Its master-plan is, no matter ac input end voltage
Change, will ensure that the front voltage of in figure part B is a stationary value.The permission change range of input voltage of present invention design
Between exchange 150V 990V, simply enter voltage within the scope of this, all can make welding machine normal work.Present invention design
Part B front voltage is direct current 650V it is allowed to fluctuation range is upper and lower 35V.
A kind of method of DC inverter welding machine wide input voltage：
A, when AC-input voltage is for 220V ± 10%, then part A repeat circuit K1, K2 closure, MOSFET field effect transistor Q1,
Q2 is constantly in off-state.Now AC-input voltage carries out rectification by diode D1-D4, is applied directly to filter capacitor
C1-C4 two ends, the one end simultaneously exchanging input is applied on the midpoint of filter capacitor C1-C4 by relay K1, forms one
Voltage-multiplying circuit is it is ensured that inverter circuit front voltage is in 650V；
B, when AC-input voltage is for 400V ± 10%, then part A repeat circuit K1 disconnects, and K2 closes, MOSFET field effect transistor
Q1, Q2 are constantly in off-state.Now AC-input voltage carries out rectification by diode D1-D4, is applied directly to filtered electrical
Hold C1-C4 two ends it is ensured that inverter circuit front voltage is in 650V；
C, when AC-input voltage is less than 200V or when between 240V-360V, then part A repeat circuit K1, K2 disconnect,
MOSFET field effect transistor Q2 is off, field effect transistor Q1 is in PWM working condition.Now AC-input voltage is logical first
Cross diode D1-D4 and carry out rectification, the voltage U1 after rectification through inductance L1, field effect transistor Q1, because Q1 is operated in PWM state
Down it is assumed that its dutycycle is D1（This dutycycle is certainly less than 1）, then the voltage Uo size after Q1 is then U1/ (1-D1), by
It is less than 1 in D1, then 1-D1 is certainly again smaller than then the voltage Uo after field effect transistor Q1 is more than U1 certainly, controls dutycycle D1
Size, then can control the voltage stabilization of inverter circuit front end in 650V；
D, when AC-input voltage is more than 440V, then part A repeat circuit K1, K2 disconnect, and MOSFET field effect transistor Q1 is in
Off-state, field effect transistor Q2 are in PWM working condition.Now AC-input voltage first pass through diode D1-D4 carry out whole
Stream, the voltage U1 after rectification through field effect transistor Q2, inductance L1, because Q1 is operated under PWM state it is assumed that its dutycycle is D2
（This dutycycle is certainly less than 1）, then the voltage Uo size after Q2 is then U1*D2, because D2 is less than 1, then through field effect
Voltage Uo after pipe Q2 is certainly less than U1, controls the size of dutycycle D2, then the voltage stabilization that can control inverter circuit front end exists
650V about.
A kind of DC inverter welding machine wide input voltage circuit, comprises welding machine and commonly uses inverter circuit, output filter circuit, weldering
Connect output circuit it is characterized in that, commonly use inverter circuit, output filter circuit with above-mentioned welding machine, welding output circuit connects wide
Input voltage circuit；Wherein, wide input voltage circuit includes ac input end, the rectification circuit being connected with ac input end（D1\
D2\D3\D4)；
Resistance R3, resistance R4 and resistance R5 series connection after with rectification after circuit in parallel, inductance L1 connect with field effect transistor Q1 after and
Circuit in parallel after rectification, the circuit in parallel after diode D5 rectification, filter capacitor C1-C4 is connected in parallel on the circuit after rectification, electricity
With DC output end circuit in parallel after resistance R6, resistance R7 and resistance R8 series connection, wherein, in diode D1-D4 and filter capacitor C1-
C4 setting relay K1 is applied on the midpoint of filter capacitor C1-C4, forms a voltage-multiplying circuit, and inductance L2 and diode D6 goes here and there
It is associated on the circuit after rectification, between the circuit in parallel diode D5 after rectification and filter capacitor C1-C4, R1, C5, R2, C6 are
Absorbing circuit during field effect transistor work, plays the effect of protection field effect transistor；Resistance R3-R8 is the partial pressure electricity of voltage collection circuit
Resistance, before and after collection, terminal voltage makes whole circuit form a voltage close loop it is ensured that making rear end electricity when field effect transistor Q1, Q2 works respectively
Pressure stable in 650V；Diode D6 is counnter attack diode it is ensured that rear terminal voltage can not be gone here and there back in the circuit of front.The present invention carries
Supply a kind of method of DC inverter welding machine wide input voltage and its wide input voltage circuit, welding machine can have been solved and using process
In cause welding machine cannot normally use due to the fluctuation of the too high or too low even better than input voltage of input voltage phenomenon.Its core
The heart be welding machine inverter circuit front end add voltage stabilizing circuit, when overtension, too low or fluctuation when after mu balanced circuit
Can this voltage stabilization in allowed band it is ensured that the normal work of welding machine.
A kind of method of DC inverter welding machine wide input voltage：Its master-plan is, no matter ac input end voltage
Change, will ensure that the front voltage of in figure part B is a stationary value.The permission change range of input voltage of present invention design
Between exchange 150V 990V, simply enter voltage within the scope of this, all can make welding machine normal work.Present invention design
Part B front voltage is direct current 650V it is allowed to fluctuation range is upper and lower 35V.
A kind of method of DC inverter welding machine wide input voltage：
A, when AC-input voltage is for 220V ± 10%, then part A repeat circuit K1, K2 closure, MOSFET field effect transistor Q1,
Q2 is constantly in off-state.Now AC-input voltage carries out rectification by diode D1-D4, is applied directly to filter capacitor
C1-C4 two ends, the one end simultaneously exchanging input is applied on the midpoint of filter capacitor C1-C4 by relay K1, forms one
Voltage-multiplying circuit is it is ensured that inverter circuit front voltage is in 650V;
B, when AC-input voltage is for 400V ± 10%, then part A repeat circuit K1 disconnects, and K2 closes, MOSFET field effect transistor
Q1, Q2 are constantly in off-state.Now AC-input voltage carries out rectification by diode D1-D4, is applied directly to filtered electrical
Hold C1-C4 two ends it is ensured that inverter circuit front voltage is in 650V；
C, when AC-input voltage is less than 200V or when between 240V-360V, then part A repeat circuit K1, K2 disconnect,
MOSFET field effect transistor Q2 is off, field effect transistor Q1 is in PWM working condition.Now AC-input voltage is logical first
Cross diode D1-D4 and carry out rectification, the voltage U1 after rectification through inductance L1, field effect transistor Q1, because Q1 is operated in PWM state
Down it is assumed that its dutycycle is D1（This dutycycle is certainly less than 1）, then the voltage Uo size after Q1 is then U1/ (1-D1), by
It is less than 1 in D1, then 1-D1 is certainly again smaller than then the voltage Uo after field effect transistor Q1 is more than U1 certainly, controls dutycycle D1
Size, then can control the voltage stabilization of inverter circuit front end in 650V;
D, when AC-input voltage is more than 440V, then part A repeat circuit K1, K2 disconnect, and MOSFET field effect transistor Q1 is in
Off-state, field effect transistor Q2 are in PWM working condition.Now AC-input voltage first pass through diode D1-D4 carry out whole
Stream, the voltage U1 after rectification through field effect transistor Q2, inductance L1, because Q1 is operated under PWM state it is assumed that its dutycycle is D2
（This dutycycle is certainly less than 1）, then the voltage Uo size after Q2 is then U1*D2, because D2 is less than 1, then through field effect
Voltage Uo after pipe Q2 is certainly less than U1, controls the size of dutycycle D2, then the voltage stabilization that can control inverter circuit front end exists
650V about.
A kind of DC inverter welding machine wide input voltage circuit, comprises welding machine and commonly uses inverter circuit, output filter circuit, weldering
Connect output circuit it is characterized in that, commonly use inverter circuit, output filter circuit with above-mentioned welding machine, welding output circuit connects wide
Input voltage circuit；Wherein, wide input voltage circuit includes ac input end, the rectification circuit being connected with ac input end（D1\
D2\D3\D4)；After resistance R3, resistance R4 and resistance R5 series connection with rectification after circuit in parallel, inductance L1 and field effect transistor Q1 are gone here and there
After connection with rectification after circuit in parallel, the circuit in parallel after diode D5 rectification, filter capacitor C1-C4 is connected in parallel on the electricity after rectification
With DC output end circuit in parallel after road, resistance R6, resistance R7 and resistance R8 series connection, wherein, in diode D1-D4 and filtered electrical
Hold C1-C4 setting relay K1 to be applied on the midpoint of filter capacitor C1-C4, form a voltage-multiplying circuit, inductance L2 and two poles
Pipe D6 is connected on the circuit after rectification, between the circuit in parallel diode D5 after rectification and filter capacitor C1-C4, R1, C5,
Absorbing circuit when R2, C6 work for field effect transistor, plays the effect of protection field effect transistor；Resistance R3-R8 is voltage collection circuit
Divider resistance, before and after collection, terminal voltage makes whole circuit form a voltage close loop it is ensured that making when field effect transistor Q1, Q2 works respectively
Rear end voltage stabilization is in 650V；Diode D6 is counnter attack diode it is ensured that rear terminal voltage can not be gone here and there back in the circuit of front.
Brief description
Fig. 1 circuit structure diagram of the present invention；
In figure comprises A, B, C, D etc. four part, and wherein B, C, D is customary DC inverter type welder common circuit, does not relate to for the present invention
And part, only part A is the implementation section of the present invention.
Specific embodiment：
Master-plan is, no matter how ac input end voltage changes, will ensure that the front voltage of part B in Fig. 1 is one
Stationary value.
The permission change range of input voltage of present invention design is between exchange 150V 990V, simply enters voltage at this
Within the scope of, all can make welding machine normal work.
The part B front voltage of present invention design is direct current 650V it is allowed to fluctuation range is upper and lower 35V.
When AC-input voltage is for 220V ± 10%, then part A repeat circuit K1, K2 closure, MOSFET field effect transistor
Q1, Q2 are constantly in off-state.Now AC-input voltage carries out rectification by diode D1-D4, is applied directly to filtered electrical
Hold C1-C4 two ends, the one end simultaneously exchanging input is applied on the midpoint of filter capacitor C1-C4 by relay K1, form one
Individual voltage-multiplying circuit is it is ensured that inverter circuit front voltage is in 650V.
When AC-input voltage is for 400V ± 10%, then part A repeat circuit K1 disconnects, and K2 closes, MOSFET field effect
Pipe Q1, Q2 are constantly in off-state.Now AC-input voltage carries out rectification by diode D1-D4, is applied directly to filter
Electric capacity C1-C4 two ends are it is ensured that inverter circuit front voltage is in 650V.
When AC-input voltage is less than 200V or when between 240V-360V, then part A repeat circuit K1, K2 disconnect,
MOSFET field effect transistor Q2 is off, field effect transistor Q1 is in PWM working condition.Now AC-input voltage is logical first
Cross diode D1-D4 and carry out rectification, the voltage U1 after rectification through inductance L1, field effect transistor Q1, because Q1 is operated in PWM state
Down it is assumed that its dutycycle is D1（This dutycycle is certainly less than 1）, then the voltage Uo size after Q1 is then U1/ (1-D1), by
It is less than 1 in D1, then 1-D1 is certainly again smaller than then the voltage Uo after field effect transistor Q1 is more than U1 certainly, controls dutycycle D1
Size, then can control the voltage stabilization of inverter circuit front end in 650V.
When AC-input voltage is more than 440V, then part A repeat circuit K1, K2 disconnect, at MOSFET field effect transistor Q1
It is in PWM working condition in off-state, field effect transistor Q2.Now AC-input voltage first passes through diode D1-D4 and carries out
Rectification, the voltage U1 after rectification through field effect transistor Q2, inductance L1, because Q1 is operated under PWM state it is assumed that its dutycycle is
D2（This dutycycle is certainly less than 1）, then the voltage Uo size after Q2 is then U1*D2, because D2 is less than 1, then through interlude effect
U1 should be certainly less than by voltage Uo after pipe Q2, control the size of dutycycle D2, then can control the voltage stabilization of inverter circuit front end
In 650V about.
Absorbing circuit when R1, C5, R2, C6 work for field effect transistor in Fig. 1, plays the effect of protection field effect transistor；Resistance R3-
R8 is the divider resistance of voltage collection circuit, and before and after collection, terminal voltage makes whole circuit form a voltage close loop it is ensured that field is imitated
Pipe Q1, Q2 make rear end voltage stabilization in 650V when working respectively；Diode D6 be counnter attack diode it is ensured that rear terminal voltage not
Can go here and there back in the circuit of front.
The present invention carries out rectification to input voltage first using one kind, if the voltage after rectification is less than some set
Value, then carry out boosting process to this voltage；If the voltage after rectification is in the range of the left and right of some, this voltage is not entered
Row is processed, if the voltage after rectification, beyond a certain voltage range, carries out blood pressure lowering process to this voltage.Ensure through processing
Voltage stabilization afterwards within a certain range, then carries out inversion, rectification output again to this voltage.
Claims (2)
1. a kind of method of DC inverter welding machine wide input voltage：
A, when AC-input voltage is for 220V ± 10%, then part A repeat circuit K1, K2 closure, MOSFET field effect transistor Q1,
Q2 is constantly in off-state；
Now AC-input voltage carries out rectification by diode D1-D4, is applied directly to filter capacitor C1-C4 two ends, hands over simultaneously
One end of stream input is applied on the midpoint of filter capacitor C1-C4 by relay K1, and one voltage-multiplying circuit of formation is it is ensured that inverse
Become circuit front voltage in 650V；
B, when AC-input voltage is for 400V ± 10%, then part A repeat circuit K1 disconnects, and K2 closes, MOSFET field effect transistor
Q1, Q2 are constantly in off-state；
Now AC-input voltage carries out rectification by diode D1-D4, be applied directly to filter capacitor C1-C4 two ends it is ensured that
Inverter circuit front voltage is in 650V；
C, when AC-input voltage is less than 200V or when between 240V-360V, then part A repeat circuit K1, K2 disconnect,
MOSFET field effect transistor Q2 is off, field effect transistor Q1 is in PWM working condition；
Now AC-input voltage first passes through diode D1-D4 and carries out rectification, and the voltage U1 after rectification is imitated through inductance L1, field
Should pipe Q1, due to Q1 be operated under PWM state it is assumed that its dutycycle be D1（This dutycycle is certainly less than 1）, then after Q1
Voltage Uo size is then U1/ (1-D1), and because D1 is less than 1, then 1-D1 is certainly again smaller than the then voltage after field effect transistor Q1
Uo is certainly more than U1, controls the size of dutycycle D1, then can control the voltage stabilization of inverter circuit front end in 650V；
D, when AC-input voltage is more than 440V, then part A repeat circuit K1, K2 disconnect, and MOSFET field effect transistor Q1 is in
Off-state, field effect transistor Q2 are in PWM working condition；
Now AC-input voltage first passes through diode D1-D4 and carries out rectification, the voltage U1 after rectification through field effect transistor Q2,
Inductance L1, because Q1 is operated under PWM state it is assumed that its dutycycle is D2（This dutycycle is certainly less than 1）, then after Q2
Voltage Uo size is then U1*D2, and because D2 is less than 1, then the voltage Uo after field effect transistor Q2 is certainly less than U1, controls duty
The ratio size of D2, then can control the voltage stabilization of inverter circuit front end in 650V.
2. a kind of DC inverter welding machine wide input voltage circuit, comprises welding machine and commonly uses inverter circuit, output filter circuit, welding is defeated
Go out circuit it is characterized in that, commonly use inverter circuit, output filter circuit with above-mentioned welding machine, welding output circuit connects wide input
Potential circuit；Wherein, wide input voltage circuit includes ac input end, the rectification circuit being connected with ac input end（D1\D2\
D3 D4), resistance R3, resistance R4 and resistance R5 series connection after with rectification after circuit in parallel, after inductance L1 is connected with field effect transistor Q1
With the circuit in parallel after rectification, the circuit in parallel after diode D5 rectification, filter capacitor C1-C4 is connected in parallel on the circuit after rectification,
With DC output end circuit in parallel after resistance R6, resistance R7 and resistance R8 series connection, wherein, in diode D1-D4 and filter capacitor
C1-C4 setting relay K1 is applied on the midpoint of filter capacitor C1-C4, forms a voltage-multiplying circuit, inductance L2 and diode
D6 is connected on the circuit after rectification, between the circuit in parallel diode D5 after rectification and filter capacitor C1-C4, R1, C5, R2,
Absorbing circuit when C6 works for field effect transistor, plays the effect of protection field effect transistor；Resistance R3-R8 is the partial pressure of voltage collection circuit
Resistance, before and after collection, terminal voltage makes whole circuit form a voltage close loop it is ensured that making rear end when field effect transistor Q1, Q2 works respectively
Voltage stabilization is in 650V；Diode D6 is counnter attack diode it is ensured that rear terminal voltage can not be gone here and there back in the circuit of front.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611145623.3A CN106425034B (en) | 2016-12-13 | 2016-12-13 | Wide input voltage circuit of direct current inverter welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611145623.3A CN106425034B (en) | 2016-12-13 | 2016-12-13 | Wide input voltage circuit of direct current inverter welding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106425034A true CN106425034A (en) | 2017-02-22 |
| CN106425034B CN106425034B (en) | 2020-11-20 |
Family
ID=58217570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611145623.3A Expired - Fee Related CN106425034B (en) | 2016-12-13 | 2016-12-13 | Wide input voltage circuit of direct current inverter welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106425034B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108566099A (en) * | 2018-06-11 | 2018-09-21 | 浙江颐顿机电有限公司 | A kind of logical input Inverting digital welding machine of the whole network |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100715773B1 (en) * | 2005-01-11 | 2007-05-08 | 엘지전자 주식회사 | power supply apparatus providing power for control circuit |
| CN200997701Y (en) * | 2007-01-09 | 2007-12-26 | 合肥三川自控工程有限公司 | Constant-current LED illuminating light with pyroelectric infrared control |
| CN201183162Y (en) * | 2008-04-16 | 2009-01-21 | 深圳市佳士科技发展有限公司 | MOSFET inversion type arc welding machine having VRD function |
| CN202261055U (en) * | 2011-09-08 | 2012-05-30 | 山东大学 | Wireless sensor self-power supply conditioning circuit based on space electromagnetic energy |
| CN203526775U (en) * | 2013-11-12 | 2014-04-09 | 浙江肯得机电股份有限公司 | Whole structure of MOS (metal oxide semiconductor) field-effect transistor inverter welding machine |
| CN205520013U (en) * | 2016-03-23 | 2016-08-31 | 许昌学院 | Be applied to drive circuit of CO2 contravariant welding machine |
-
2016
- 2016-12-13 CN CN201611145623.3A patent/CN106425034B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100715773B1 (en) * | 2005-01-11 | 2007-05-08 | 엘지전자 주식회사 | power supply apparatus providing power for control circuit |
| CN200997701Y (en) * | 2007-01-09 | 2007-12-26 | 合肥三川自控工程有限公司 | Constant-current LED illuminating light with pyroelectric infrared control |
| CN201183162Y (en) * | 2008-04-16 | 2009-01-21 | 深圳市佳士科技发展有限公司 | MOSFET inversion type arc welding machine having VRD function |
| CN202261055U (en) * | 2011-09-08 | 2012-05-30 | 山东大学 | Wireless sensor self-power supply conditioning circuit based on space electromagnetic energy |
| CN203526775U (en) * | 2013-11-12 | 2014-04-09 | 浙江肯得机电股份有限公司 | Whole structure of MOS (metal oxide semiconductor) field-effect transistor inverter welding machine |
| CN205520013U (en) * | 2016-03-23 | 2016-08-31 | 许昌学院 | Be applied to drive circuit of CO2 contravariant welding machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108566099A (en) * | 2018-06-11 | 2018-09-21 | 浙江颐顿机电有限公司 | A kind of logical input Inverting digital welding machine of the whole network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106425034B (en) | 2020-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107276388B (en) | PFC circuit and variable frequency air conditioner | |
| CN106452046B (en) | Switching tube control method and device of PFC circuit | |
| CN205437431U (en) | Structure of IGBT single tube full -bridge contravariant manual electric arc welding machine | |
| CN207339641U (en) | For the overvoltage protecting control device of DSP series direct-current switch power supplies | |
| CN104227194B (en) | Electric welding machine and the control system thereof of full voltage input | |
| CN204928585U (en) | High PF value is turned over and is swashed topological circuit with overvoltage protection | |
| CN205490211U (en) | Miniwatt switching power supply circuit of multiplexed output | |
| CN108306527B (en) | A method of inhibit unidirectional three-phase star to connect controlled rectifier line current Zero-crossing Distortion | |
| CN104128680B (en) | Electrochemical machining high frequency pulse power source based on SOPC technology | |
| CN106425034A (en) | Method for wide input voltage of direct current inverter welding machine and wide input voltage circuit thereof | |
| CN103973134A (en) | Direct-current power device and PWM (pulse width modulation) pulse control method for improving power factor thereof | |
| CN105591542B (en) | A kind of Buck converters and its reflux control circuit | |
| CN107453360A (en) | A kind of power supply quality optimizes device and method | |
| CN116031857A (en) | Commercial power misconnection prevention protection circuit and method applied to inverter welding power supply | |
| CN202889180U (en) | AC (Alternating Current) and DC (Direct Current) input self-adaptive circuit | |
| CN201900045U (en) | Three-phase intermediate-frequency direct-current high-voltage power supply of electric precipitator | |
| CN104467513A (en) | Pulse type welder power circuit | |
| CN109391138A (en) | A kind of offset-type regulated power supply | |
| CN107800185A (en) | On-Line UPS | |
| CN108667320B (en) | Switch power supply with overcurrent protection and self-reset | |
| CN207835065U (en) | A kind of domestic power supply voltage fluctuation compensation device based on DSP | |
| CN106026345B (en) | A kind of voltage-sag prevention device of motor | |
| CN201815777U (en) | Power circuit of generator power supply inverter type arc welding machine | |
| CN203817592U (en) | Inverter welder circuit powered by generator | |
| CN203561907U (en) | DC (direct current) regulated power supply with low power consumption |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201120 Termination date: 20211213 |