CN204089606U - Boosting laser welding power-supply system - Google Patents
Boosting laser welding power-supply system Download PDFInfo
- Publication number
- CN204089606U CN204089606U CN201420539271.XU CN201420539271U CN204089606U CN 204089606 U CN204089606 U CN 204089606U CN 201420539271 U CN201420539271 U CN 201420539271U CN 204089606 U CN204089606 U CN 204089606U
- Authority
- CN
- China
- Prior art keywords
- electrochemical capacitor
- electrically connected
- circuit
- supply system
- laser welding
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of boosting laser welding power-supply system, comprise AC power circuit, first rectification circuit and the first accumulator, described boosting laser welding power-supply system also comprises inverter circuit, booster circuit, second rectification circuit, second accumulator, central control unit and boosting driver element, described AC power circuit, first rectification circuit, first accumulator, inverter circuit, booster circuit, second rectification circuit and the second accumulator are electrically connected successively, described central control unit and described boosting driver element are electrically connected, described boosting driver element is electrically connected with described inverter circuit further.Compared with prior art, booster circuit described in the utility model can increase the output voltage of described boosting laser welding power-supply system, improve xenon lamp power, increase single-point laser energy: described inverter circuit can isolate described AC power circuit, improve the stability of output voltage, thus improve the stability of laser energy.
Description
Technical field
The utility model relates to a kind of power-supply system, particularly relates to a kind of boosting laser welding power-supply system.
Background technology
Laser welding power supply a kind ofly provides the DCPS digitally controlled power source of electric energy for laser-welding machine, and it is inner adopts Microprocessor S3C44B0X, can arrange, welding parameter and welding requirements are matched, to reach the welding effect of the best during use to laser pulse shape.
Laser welding power supply is in the market substantially all by three-phase electricity rectification, general purpose I GBT carries out Generation Control to xenon lamp again, but because xenon lamp internal resistance is larger, and existing laser welding electric power output voltage is less, cause the operating efficiency of xenon lamp little, want to obtain very large laser energy very difficult, the advantage of xenon lamp can not be given full play to.
Therefore, be necessary to provide a kind of new laser welding power supply to solve the problems referred to above.
Utility model content
The purpose of this utility model is to provide the boosting laser welding power-supply system that a kind of output voltage is large, can improve xenon lamp operating power, increase laser energy.
To achieve these goals, the technical scheme that adopts of the utility model is as follows:
A kind of boosting laser welding power-supply system, comprise AC power circuit, first rectification circuit and the first accumulator, described boosting laser welding power-supply system also comprises inverter circuit, booster circuit, second rectification circuit, second accumulator, central control unit and boosting driver element, described AC power circuit, first rectification circuit, first accumulator, inverter circuit, booster circuit, second rectification circuit and the second accumulator are electrically connected successively, described central control unit and described boosting driver element are electrically connected, described boosting driver element is electrically connected with described inverter circuit further.
Preferably, described AC power circuit comprises mains supply, normally open contact and two resistance, described first rectification circuit is single-phase rectification bridge, described single-phase rectification bridge comprises two inputs, described mains supply comprises live wire and zero line, described normally open contact comprises two contacts, contact described in one of them is connected between the first input end of described zero line and described single-phase rectification bridge again after being connected with a described resistor coupled in parallel, contact described in another is connected between described live wire and the second input of described single-phase rectification bridge after being connected with resistor coupled in parallel described in another again.
Preferably, described AC power circuit comprises three phase mains, normally open contact and three resistance, described first rectification circuit is three-phase commutation bridge, described three-phase commutation bridge comprises three inputs, described three phase mains comprises three power output ends, described normally open contact comprises three contacts, wherein, be connected to again after first contact is connected with first resistor coupled in parallel between first power output end of described three phase mains and the first input end of described three-phase commutation bridge, be connected to again after second contact and second resistor are connected in parallel between the second power supply output of described three phase mains and the second input of described three-phase commutation bridge, be connected to again between the 3rd power output end of described three phase mains and the 3rd input of described three-phase commutation bridge after 3rd contact is connected with the 3rd resistor coupled in parallel.
Preferably, described first rectification circuit comprises positive output end and negative output terminal, described first accumulator comprises first to fourth electrochemical capacitor, described boosting laser welding power-supply system also comprises the first inductance for by DC pulse current conversion being direct current constant electric current, the first end of described first inductance and the positive output end of described first rectification circuit are electrically connected, second end of described first inductance and the positive pole of described first electrochemical capacitor are electrically connected, described first electrochemical capacitor and described second electrochemical capacitor are connected in parallel, 3rd electrochemical capacitor and described 4th electrochemical capacitor are connected in parallel, wherein, the positive pole of described first electrochemical capacitor and the positive pole of described second electrochemical capacitor are electrically connected, the negative pole of described first electrochemical capacitor, the negative pole of described second electrochemical capacitor, the positive pole of described 3rd electrochemical capacitor and the positive pole of described 4th electrochemical capacitor are electrically connected, the negative pole of described 3rd electrochemical capacitor and the negative pole of described 4th electrochemical capacitor are electrically connected with the negative output terminal of described first rectification circuit respectively.
Preferably, described boosting laser welding power-supply system also comprises normally closed interlock and the 4th resistance, and described normally closed interlock is connected in parallel with described first accumulator after being connected with described 4th resistant series again.
Preferably, described inverter circuit comprises an IGBT, the 2nd IGBT, the first diode, the second diode, the 5th resistance, the 6th resistance, the first electric capacity and the second electric capacity, the collector electrode of a described IGBT is electrically connected with the positive pole of described second electrochemical capacitor, the first end of described first electric capacity respectively, the emitter of a described IGBT and the negative electrode of described first diode are electrically connected, the anode of described first diode and the second end of described first electric capacity are electrically connected, and described first diode is connected with described 5th resistor coupled in parallel; The collector electrode of described 2nd IGBT is electrically connected with the positive pole of described second electrochemical capacitor, the first end of described second electric capacity respectively, the emitter of a described IGBT and the negative electrode of described second diode are electrically connected, the anode of described second diode and the second end of described second electric capacity are electrically connected, and described second diode is connected with described 6th resistor coupled in parallel.
Preferably, described boosting driver element comprises the first drive singal output and the second drive singal output, the gate pole of described first drive singal output and a described IGBT is electrically connected, and the gate pole of described second drive singal output and described 2nd IGBT is electrically connected.
Preferably, described booster circuit comprises transformer, described transformer comprises primary coil and secondary coil, described boosting laser welding power-supply system also comprises the 3rd electric capacity, current sensor, the second inductance, and described 3rd electric capacity, current sensor, the second inductance and primary coil are connected in series between the emitter of a described IGBT and the emitter of described 2nd IGBT.
Preferably, described boosting laser welding power-supply system also comprises the 4th electric capacity, described second rectification circuit is single-phase rectification bridge, described second rectification circuit comprises two inputs, positive output end and negative output terminals, an input of described second rectification circuit and the first end of described secondary coil are electrically connected, another input of described second rectification circuit and the second end of described secondary coil are electrically connected, and connect described 4th electric capacity between the positive output end of described second rectification circuit and negative output terminal.
Preferably, described second accumulator comprises the 5th to the 8th electrochemical capacitor, described 5th electrochemical capacitor and the 6th electrochemical capacitor are connected in series, described 7th electrochemical capacitor and the 8th electrochemical capacitor are connected in series, wherein, the positive pole of described 5th electrochemical capacitor and the positive output end of described second rectification circuit are electrically connected, the negative pole of described 5th electrochemical capacitor and the positive pole of the 6th electrochemical capacitor are electrically connected, the negative pole of the 6th electrochemical capacitor and the negative output terminal of described second rectification circuit are electrically connected, the positive pole of described 7th electrochemical capacitor and the positive output end of described second rectification circuit are electrically connected, the negative pole of described 7th electrochemical capacitor and the positive pole of the 8th electrochemical capacitor are electrically connected, the negative pole of the 8th electrochemical capacitor and the negative output terminal of described second rectification circuit are electrically connected.
Compared with prior art, the beneficial effect of the utility model boosting laser welding power-supply system is: described booster circuit can increase the output voltage of described boosting laser welding power-supply system, improves xenon lamp power, increases single-point laser energy; Described inverter circuit can isolate described AC power circuit, makes the output voltage of described boosting laser welding power-supply system not by the impact of AC power circuit voltage fluctuation, improves the stability of output voltage, thus improve the stability of laser energy.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the utility model boosting laser welding power-supply system.
In figure, each mark is as follows: 1, AC power circuit; 2, the first rectification circuit; 3, the first accumulator; 4, inverter circuit; 5, booster circuit; 6, the second rectification circuit; 7, the second accumulator; J1, normally open contact; J2, normally closed interlock; L1, the first inductance; L2, the second inductance; C1, the first electrochemical capacitor; C2, the second electrochemical capacitor; C3, the 3rd electrochemical capacitor; C4, the 4th electrochemical capacitor; C5, the 5th electrochemical capacitor; C6, the 6th electrochemical capacitor; C7, the 7th electrochemical capacitor; C8, the 8th electrochemical capacitor; C21, the first electric capacity; C22, the second electric capacity; C23, the 3rd electric capacity; D1, the first diode; D2, the second diode; LEM, current sensor; R1, the first resistance; R2, the second resistance; R3, the 3rd resistance; R4, the 4th resistance; R5, the 5th resistance; R6, the 6th resistance.
Embodiment
Below in conjunction with specific embodiment, the utility model is described further.
A kind of boosting laser welding power-supply system, comprise AC power circuit 1, first rectification circuit 2, first accumulator 3, inverter circuit 4, booster circuit 5, second rectification circuit 6, second accumulator 7, central control unit and boosting driver element, described AC power circuit 1, first rectification circuit 2, first accumulator 3, inverter circuit 4, booster circuit 5, second rectification circuit 6 and the second accumulator 7 are electrically connected successively, described central control unit and described boosting driver element are electrically connected, described boosting driver element is electrically connected with described inverter circuit 4 further.
In the utility model one preferred embodiment, described AC power circuit 1 comprises mains supply, normally open contact J1 and two resistance, described first rectification circuit 2 is single-phase rectification bridge, single-phase rectification bridge is made up of the diodes in parallel of two pairs of anti-series, described single-phase rectification bridge comprises two inputs, described mains supply comprises live wire and zero line, described normally open contact J1 comprises two contacts, contact described in one of them is connected between the first input end of described zero line and described single-phase rectification bridge again after being connected with a described resistor coupled in parallel, contact described in another is connected between described live wire and the second input of described single-phase rectification bridge after being connected with resistor coupled in parallel described in another again.
In another preferred embodiment of the utility model, as shown in Figure 1, described AC power circuit 1 comprises three phase mains, normally open contact J1 and three resistance, described first rectification circuit 2 is three-phase commutation bridge, three-phase commutation bridge is made up of the diodes in parallel of three pairs of anti-series, described three-phase commutation bridge comprises three inputs, described three phase mains comprises three power output ends, described normally open contact J1 comprises three contacts, wherein, be connected to again after first contact and first resistance R1 are connected in parallel between first power output end of described three phase mains and the first input end of described three-phase commutation bridge, be connected to again after second contact and second resistor R2 are connected in parallel between the second power supply output of described three phase mains and the second input of described three-phase commutation bridge, be connected to again between the 3rd power output end of described three phase mains and the 3rd input of described three-phase commutation bridge after 3rd contact and the 3rd resistance R3 are connected in parallel.
Described first rectification circuit 2 comprises positive output end and negative output terminal, described first accumulator 3 comprises first to fourth electrochemical capacitor, described boosting laser welding power-supply system also comprises the first inductance L 1 for by DC pulse current conversion being direct current constant electric current, the first end of described first inductance L 1 and the positive output end of described first rectification circuit 2 are electrically connected, second end of described first inductance L 1 and the positive pole of described first electrochemical capacitor C1 are electrically connected, described first electrochemical capacitor C1 and described second electrochemical capacitor C2 is connected in parallel, 3rd electrochemical capacitor C3 and described 4th electrochemical capacitor C4 is connected in parallel, wherein, the positive pole of described first electrochemical capacitor C1 and the positive pole of described second electrochemical capacitor C2 are electrically connected, the negative pole of described first electrochemical capacitor C1, the negative pole of described second electrochemical capacitor C2, the positive pole of described 3rd electrochemical capacitor C3 and the positive pole of described 4th electrochemical capacitor C4 are electrically connected, the negative pole of described 3rd electrochemical capacitor C3 and the negative pole of described 4th electrochemical capacitor C4 are electrically connected with the negative output terminal of described first rectification circuit 2 respectively.
Described boosting laser welding power-supply system also comprises normally closed interlock J2 and the 4th resistance R4, is connected in parallel after described normally closed interlock J2 and described 4th resistance R4 is connected in series with described first accumulator 3 again.
Described inverter circuit 4 comprises an IGBT, 2nd IGBT, first diode D1, second diode D2, 5th resistance R5, 6th resistance R6, first electric capacity C21 and the second electric capacity C22, the collector electrode of a described IGBT respectively with the positive pole of described second electrochemical capacitor C2, the first end of described first electric capacity C21 is electrically connected, the emitter of a described IGBT and the negative electrode of described first diode D1 are electrically connected, the anode of described first diode D1 and second end of described first electric capacity C21 are electrically connected, described first diode D1 and described 5th resistance R5 is connected in parallel, the collector electrode of described 2nd IGBT is electrically connected with the positive pole of described second electrochemical capacitor C2, the first end of described second electric capacity C22 respectively, the emitter of a described IGBT and the negative electrode of described second diode D2 are electrically connected, the anode of described second diode D2 and second end of described second electric capacity C22 are electrically connected, and described second diode D2 and described 6th resistance R6 is connected in parallel.
Described boosting driver element comprises the first drive singal output and the second drive singal output, the gate pole of described first drive singal output and a described IGBT is electrically connected, and the gate pole of described second drive singal output and described 2nd IGBT is electrically connected.
Described booster circuit 5 comprises transformer, described transformer comprises primary coil and secondary coil, described boosting laser welding power-supply system also comprises the 3rd electric capacity C23, current sensor LEM, the second inductance L 2, and described 3rd electric capacity C23, current sensor LEM, the second inductance L 2 and primary coil are connected in series between the emitter of a described IGBT and the emitter of described 2nd IGBT.
Described boosting laser welding power-supply system also comprises the 4th electric capacity, described second rectification circuit 6 is single-phase rectification bridge, described second rectification circuit 6 comprises two inputs, positive output end and negative output terminals, an input of described second rectification circuit 6 and the first end of described secondary coil are electrically connected, described another input of second rectification circuit 6 and the second end of described secondary coil are electrically connected, and connect described 4th electric capacity between the positive output end of described second rectification circuit 6 and negative output terminal.
Described second accumulator 7 comprises the 5th to the 8th electrochemical capacitor, described 5th electrochemical capacitor C5 and the 6th electrochemical capacitor C6 is connected in series, described 7th electrochemical capacitor C7 and the 8th electrochemical capacitor C8 is connected in series, wherein, the positive pole of described 5th electrochemical capacitor C5 and the positive output end of described second rectification circuit 6 are electrically connected, the negative pole of described 5th electrochemical capacitor C5 and the positive pole of the 6th electrochemical capacitor C6 are electrically connected, the negative pole of the 6th electrochemical capacitor C6 and the negative output terminal of described second rectification circuit 6 are electrically connected, the positive pole of described 7th electrochemical capacitor C7 and the positive output end of described second rectification circuit 6 are electrically connected, the negative pole of described 7th electrochemical capacitor C7 and the positive pole of the 8th electrochemical capacitor C8 are electrically connected, the negative pole of the 8th electrochemical capacitor C8 and the negative output terminal of described second rectification circuit 6 are electrically connected.
Operation principle of the present utility model is: described AC power circuit 1 provides alternating current for whole Circuits System, described first rectified current converts alternating current to direct current, described direct current forms alternating current after described inverter circuit 4, described inverter circuit 4 has isolated described AC power circuit 1, make the output voltage of described boosting laser welding power-supply system not by the impact of AC power circuit 1 voltage fluctuation, improve the stability of output voltage, thus improve the stability of laser energy; The alternating current that inversion is formed is carried out boosting process by described booster circuit 5, increases the output voltage of described boosting laser welding power-supply system, thus improves xenon lamp power, increases single-point laser energy.
When embody rule, the utility model output voltage can reach 700V, exceeds 100 ~ 150V than common power, use same model xenon lamp, the discharging current that power supply exports xenon lamp to can improve 150 ~ 200A, possesses true ability of releasing more than 450A electric current, increases substantially Laser output peak power.
Schematically above be described the utility model and execution mode thereof, this description does not have restricted, and also just one of the execution mode of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection range of the present utility model all should be belonged to.
Claims (10)
1. a boosting laser welding power-supply system, comprise AC power circuit, first rectification circuit and the first accumulator, it is characterized in that: described boosting laser welding power-supply system also comprises inverter circuit, booster circuit, second rectification circuit, second accumulator, central control unit and boosting driver element, described AC power circuit, first rectification circuit, first accumulator, inverter circuit, booster circuit, second rectification circuit and the second accumulator are electrically connected successively, described central control unit and described boosting driver element are electrically connected, described boosting driver element is electrically connected with described inverter circuit further.
2. boosting laser welding power-supply system as claimed in claim 1, it is characterized in that: described AC power circuit comprises mains supply, normally open contact and two resistance, described first rectification circuit is single-phase rectification bridge, described single-phase rectification bridge comprises two inputs, described mains supply comprises live wire and zero line, described normally open contact comprises two contacts, contact described in one of them is connected between the first input end of described zero line and described single-phase rectification bridge again after being connected with a described resistor coupled in parallel, contact described in another is connected between described live wire and the second input of described single-phase rectification bridge after being connected with resistor coupled in parallel described in another again.
3. boosting laser welding power-supply system as claimed in claim 1, it is characterized in that: described AC power circuit comprises three phase mains, normally open contact and three resistance, described first rectification circuit is three-phase commutation bridge, described three-phase commutation bridge comprises three inputs, described three phase mains comprises three power output ends, described normally open contact comprises three contacts, wherein, be connected to again after first contact is connected with first resistor coupled in parallel between first power output end of described three phase mains and the first input end of described three-phase commutation bridge, be connected to again after second contact and second resistor are connected in parallel between the second power supply output of described three phase mains and the second input of described three-phase commutation bridge, be connected to again between the 3rd power output end of described three phase mains and the 3rd input of described three-phase commutation bridge after 3rd contact is connected with the 3rd resistor coupled in parallel.
4. boosting laser welding power-supply system as claimed in claim 1, it is characterized in that: described first rectification circuit comprises positive output end and negative output terminal, described first accumulator comprises first to fourth electrochemical capacitor, described boosting laser welding power-supply system also comprises the first inductance for by DC pulse current conversion being direct current constant electric current, the first end of described first inductance and the positive output end of described first rectification circuit are electrically connected, second end of described first inductance and the positive pole of described first electrochemical capacitor are electrically connected, described first electrochemical capacitor and described second electrochemical capacitor are connected in parallel, 3rd electrochemical capacitor and described 4th electrochemical capacitor are connected in parallel, wherein, the positive pole of described first electrochemical capacitor and the positive pole of described second electrochemical capacitor are electrically connected, the negative pole of described first electrochemical capacitor, the negative pole of described second electrochemical capacitor, the positive pole of described 3rd electrochemical capacitor and the positive pole of described 4th electrochemical capacitor are electrically connected, the negative pole of described 3rd electrochemical capacitor and the negative pole of described 4th electrochemical capacitor are electrically connected with the negative output terminal of described first rectification circuit respectively.
5. boosting laser welding power-supply system as claimed in claim 4, it is characterized in that: described boosting laser welding power-supply system also comprises normally closed interlock and the 4th resistance, described normally closed interlock is connected in parallel with described first accumulator after being connected with described 4th resistant series again.
6. boosting laser welding power-supply system as claimed in claim 4, it is characterized in that: described inverter circuit comprises an IGBT, 2nd IGBT, first diode, second diode, 5th resistance, 6th resistance, first electric capacity and the second electric capacity, the collector electrode of a described IGBT respectively with the positive pole of described second electrochemical capacitor, the first end of described first electric capacity is electrically connected, the emitter of a described IGBT and the negative electrode of described first diode are electrically connected, the anode of described first diode and the second end of described first electric capacity are electrically connected, described first diode is connected with described 5th resistor coupled in parallel, the collector electrode of described 2nd IGBT is electrically connected with the positive pole of described second electrochemical capacitor, the first end of described second electric capacity respectively, the emitter of a described IGBT and the negative electrode of described second diode are electrically connected, the anode of described second diode and the second end of described second electric capacity are electrically connected, and described second diode is connected with described 6th resistor coupled in parallel.
7. boosting laser welding power-supply system as claimed in claim 6, it is characterized in that: described boosting driver element comprises the first drive singal output and the second drive singal output, the gate pole of described first drive singal output and a described IGBT is electrically connected, and the gate pole of described second drive singal output and described 2nd IGBT is electrically connected.
8. boosting laser welding power-supply system as claimed in claim 6, it is characterized in that: described booster circuit comprises transformer, described transformer comprises primary coil and secondary coil, described boosting laser welding power-supply system also comprises the 3rd electric capacity, current sensor, the second inductance, and described 3rd electric capacity, current sensor, the second inductance and primary coil are connected in series between the emitter of a described IGBT and the emitter of described 2nd IGBT.
9. boosting laser welding power-supply system as claimed in claim 8, it is characterized in that: described boosting laser welding power-supply system also comprises the 4th electric capacity, described second rectification circuit is single-phase rectification bridge, described second rectification circuit comprises two inputs, positive output end and negative output terminal, an input of described second rectification circuit and the first end of described secondary coil are electrically connected, another input of described second rectification circuit and the second end of described secondary coil are electrically connected, described 4th electric capacity is connected between the positive output end of described second rectification circuit and negative output terminal.
10. boosting laser welding power-supply system as claimed in claim 9, it is characterized in that: described second accumulator comprises the 5th to the 8th electrochemical capacitor, described 5th electrochemical capacitor and the 6th electrochemical capacitor are connected in series, described 7th electrochemical capacitor and the 8th electrochemical capacitor are connected in series, wherein, the positive pole of described 5th electrochemical capacitor and the positive output end of described second rectification circuit are electrically connected, the negative pole of described 5th electrochemical capacitor and the positive pole of the 6th electrochemical capacitor are electrically connected, the negative pole of the 6th electrochemical capacitor and the negative output terminal of described second rectification circuit are electrically connected, the positive pole of described 7th electrochemical capacitor and the positive output end of described second rectification circuit are electrically connected, the negative pole of described 7th electrochemical capacitor and the positive pole of the 8th electrochemical capacitor are electrically connected, the negative pole of the 8th electrochemical capacitor and the negative output terminal of described second rectification circuit are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539271.XU CN204089606U (en) | 2014-09-18 | 2014-09-18 | Boosting laser welding power-supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539271.XU CN204089606U (en) | 2014-09-18 | 2014-09-18 | Boosting laser welding power-supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204089606U true CN204089606U (en) | 2015-01-07 |
Family
ID=52182272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420539271.XU Active CN204089606U (en) | 2014-09-18 | 2014-09-18 | Boosting laser welding power-supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204089606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242663A (en) * | 2014-09-18 | 2014-12-24 | 苏州迅镭激光科技有限公司 | Boosting laser welding power supply system |
-
2014
- 2014-09-18 CN CN201420539271.XU patent/CN204089606U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242663A (en) * | 2014-09-18 | 2014-12-24 | 苏州迅镭激光科技有限公司 | Boosting laser welding power supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101783532B (en) | Induction electricity getting device for high-voltage power transmission line | |
| CN206250979U (en) | A kind of quasi-resonance active-clamp flyback converter | |
| CN205283423U (en) | Three -phase PFC rectifier circuit | |
| CN105720826A (en) | Hybrid bridge type double-voltage rectification and output parallel single-stage inverter | |
| CN104967303A (en) | Self-starting control apparatus for intelligent electric energy router DC unit and self-starting method | |
| CN104780692B (en) | A kind of single-stage is without the double Boost of bridge and Flyback integrated LED drive circuit | |
| CN204089606U (en) | Boosting laser welding power-supply system | |
| CN104242663A (en) | Boosting laser welding power supply system | |
| CN210115553U (en) | Novel high frequency contravariant welding machine power conversion circuit | |
| CN102255356A (en) | Efficient uninterruptible power supply | |
| CN101656482B (en) | Three-phase rectifier electrifying device | |
| CN203775041U (en) | Alternating-current power source based on dual voltage rectifying and BOOST circuits | |
| CN104539180A (en) | Single-phase transformer-free inverter capable of reducing system leak current | |
| CN110153535B (en) | Power conversion circuit of high-frequency inverter welding machine | |
| CN205212694U (en) | Two boost of common mode rejection do not have bridge PFC converter | |
| CN201409247Y (en) | Driving circuit of LED (Light-Emitting Diode) lamp | |
| CN204442188U (en) | A kind of electrostatic precipitation high-frequency device | |
| CN203896194U (en) | Switch power supply | |
| CN202424566U (en) | Single-phase unfenced photovoltaic grid-connected inverted circuit | |
| CN205911954U (en) | Soft switch electrical energy conversion series connected output device of looks full -bridge is moved to high efficiency | |
| CN202423827U (en) | Low loss DC negative ion generator | |
| CN102223058B (en) | Interlaced on-line isolated double-cuk circuit | |
| CN101626199A (en) | Transformerless DC voltage-stabilized power supply | |
| CN206234679U (en) | A kind of battery protection intelligent desk lamp | |
| CN101409511B (en) | Inverse-excitation type switch power-supply circuit for AC/DC capacitance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |