Electric heating – Metal heating – By arc
Patent
1978-06-15
1979-12-25
Goldberg, Elliot A.
Electric heating
Metal heating
By arc
B23K 910
Patent
active
041807200
ABSTRACT:
A square wave welding power supply system includes two constant current power sources. The first power source 10 is preferably an SCR controlled power supply having an output connected in an arc circuit 15 through an inverter circuit including SCR-1 through SCR-4 which controls the polarity and duration of the welding current applied to the arc circuit. The second power supply 20 is preferably a reactor power supply for supplying additional welding current during one polarity of the square wave. A shorting means (SCR-5) is connected across the output of the second power supply to maintain current flow therefrom during those intervals when the output of power supply 20 is not connected to the arc circuit. A gating circuit 30 controls the SCRs (SCR-1 through SCR-5) and commutation circuits (C-1 through C-5) connected across each SCR. A diode D1, or SCR, is connected in series with the second power supply output to prevent short circuiting of the arc by SCR-5.
REFERENCES:
patent: 3068352 (1962-12-01), Correy
patent: 3300683 (1967-01-01), Weishaar
patent: 3330933 (1967-07-01), Maklary
patent: 3382345 (1968-05-01), Normando
patent: 3598954 (1971-08-01), Iceland et al.
patent: 3781508 (1973-12-01), Dauer et al.
patent: 3894210 (1975-07-01), Smith et al.
patent: 3999034 (1976-12-01), Barhorst
patent: 4092517 (1978-05-01), Woodacre
Goldberg Elliot A.
Hobart Brothers Company
Shaw Clifford C.
LandOfFree
Welding power supply does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Welding power supply, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Welding power supply will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2071887