Abstract: An electric arc welder for creating a welding process in the form of a succession of AC waveforms between a particular type of cored electrode, with a sheath and core, and a workpiece by a power source comprising an high frequency switching device for creating the individual waveforms in said succession of waveforms, each waveform having a profile is formed by the magnitude of each of a large number of short current pulses generated at a frequency of at least 18 kHz where said profile is determined by the input signal to a wave shaper controlling said short current pulses; a circuit to create a profile signal indicative of said particular type of electrode; and a select circuit to select said input signal based upon said profile signal whereby said wave shaper causes said power source to crate a specific waveform profile for said particular type of cored electrode.

Abstract: The disclosed arrangements and procedures replicate source files across networked resources. Specifically, a server receives a package update notification corresponding to a difference between a previous set of source files and one or more new sets of source files. Responsive to receiving the package update notification, a delta set of source files that correspond to the difference are identified. A set of source and/or distribution servers in an enterprise network that are configured for delta replication is determined. The identified delta set of source files is communicated to the determined source and/or distribution servers.