Power supply for electric arc welding

Details Power supply for electric arc welding Power supply for electric arc welding

1981-09-08

1984-07-10

Shaw, C. C.

Electric heating

Metal heating

By arc

21913032, B23K 909

Patent

active

044594593

ABSTRACT:
A power supply for electric arc welding, particularly gas tungsten arc welding, is described. The supply operates from conventional, alternating potential, and provides either a direct current or an alternating current with a rectangular wave shape to a load. The supply includes an input transformer, and two current paths, each of which includes an inductor and a controlled rectifier. A control circuit initiates conduction of the rectifiers at appropriate times selected to obtain the desired load current. In preferred embodiments, the control circuit includes differential amplifiers which enable comparison of the output current to a control current, adjustment of the ratio of the currents in the two current paths, and adjustment of the gain and time constant of the control circuit.

REFERENCES:
patent: 3330933 (1967-07-01), Maklary
patent: 3382345 (1968-05-01), Normando
patent: 3530359 (1970-09-01), Grist
patent: 3598954 (1971-08-01), Iceland
patent: 3746965 (1973-07-01), Okada et al.
patent: 3894210 (1975-07-01), Smith et al.
patent: 3904846 (1975-09-01), Risberg
patent: 3999034 (1976-12-01), Barhorst
patent: 4038515 (1977-07-01), Risberg
patent: 4092517 (1978-05-01), Woodacre
patent: 4310744 (1982-01-01), Okada

Affiliated with

Also associated with

Rating

Power supply for electric arc welding 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 for electric arc welding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power supply for electric arc welding will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1577612