Electric heating – Metal heating – By arc
Patent
1999-01-25
2000-04-18
Shaw, Clifford C.
Electric heating
Metal heating
By arc
21913031, 21913032, B23K 910
Patent
active
060518065
ABSTRACT:
A power supply apparatus for welders includes an input-side AC-to-DC converter for converting an input commercial AC voltage into a DC voltage, which is, in turn, converted to a high-frequency voltage in an inverter. The high-frequency voltage is transformed to a high-frequency voltage having a desired magnitude in a transformer. The transformed high-frequency voltage is then converted back to a DC voltage in an output-side high-frequency-to-DC converter. The DC voltage is developed between output terminals of the power supply apparatus. A current detector detects the current flowing through the output terminals and develops a detected-current representative signal. A voltage detector detects the voltage between the output terminals and develops a detected-voltage representative signal. A CPU has three control modes and controls, in a first mode, the inverter in such a manner that the current representative signal becomes equal to a reference-current representative signal. In a second mode, the CPU activates and, then, deactivates a high-frequency generator, which provides a high-frequency voltage between the output terminals, and, thereafter, performs the first mode of control. In a third control mode, the CPU controls the inverter in such a manner that the voltage representative signal becomes equal to a reference-voltage representative signal and also controls a wire feeder for feeding a wire to be connected to one of the output terminals.
REFERENCES:
patent: 5315089 (1994-05-01), Hughes et al.
patent: 5343016 (1994-08-01), Davis et al.
patent: 5824991 (1998-10-01), Mita et al.
patent: 5831240 (1998-11-01), Katooka et al.
patent: 5877952 (1999-03-01), Moriguchi et al.
Danjo Kenzo
Ikeda Tetsuro
Ishii Hideo
Katooka Masao
Kinoshita Atsushi
Sansha Electric Manufacturing Co., Limited
Shaw Clifford C.
LandOfFree
Power supply apparatus for welders and method of manufacturing s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power supply apparatus for welders and method of manufacturing s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power supply apparatus for welders and method of manufacturing s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2337677