POWER SUPPLY UNIT AND POWER SUPPLY UNIT FOR ARC PROCESSING
PROBLEM TO BE SOLVED: To provide a power supply unit for arc processing capable of contributing to small capacity itself and low withstanding voltage of a switching element by suppressing an auxiliary capacitor used for soft switching from being overcharged.SOLUTION: An output control circuit SC swi...
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| creator | TAJIMA HIROTSUNE MANABE AKIHIKO ETO TETSUYA |
| description | PROBLEM TO BE SOLVED: To provide a power supply unit for arc processing capable of contributing to small capacity itself and low withstanding voltage of a switching element by suppressing an auxiliary capacitor used for soft switching from being overcharged.SOLUTION: An output control circuit SC switches, to an on state, switching elements TR7, TR8 adapted to a state immediately before switching elements TR1-TR4 in an inverter circuit 13 turn off to form a path for feeding back a reflux current which may occur after appropriate charging of an auxiliary capacitor C3 to smoothing capacitors C1, C2 side through switching elements TR7, TR8. |
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| subjects | APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CLADDING OR PLATING BY SOLDERING OR WELDING CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELECTRICITY GENERATION MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM |
| title | POWER SUPPLY UNIT AND POWER SUPPLY UNIT FOR ARC PROCESSING |
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