Output choke for a DC welding machine and method of controlling inductance in the output circuit of an arc welder

The coil has a core of high permeability with at least one gap between the faces of two pole pieces. The faces (54) of the first pole piece are arranged convergent relative to the faces (56) of the second pole piece, forming a gap (58) between them. The width of the gap decreases continuously over t...

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Bibliographische Detailangaben
Hauptverfasser:	CLARK KEITH LEON, HOUSOUR BRIAN KEITH
Format:	Patent
Sprache:	eng ; pol
Schlagworte:	BASIC ELECTRIC ELEMENTS CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELECTRICITY INDUCTANCES MACHINE TOOLS MAGNETS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SOLDERING OR UNSOLDERING TRANSFORMERS TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	The coil has a core of high permeability with at least one gap between the faces of two pole pieces. The faces (54) of the first pole piece are arranged convergent relative to the faces (56) of the second pole piece, forming a gap (58) between them. The width of the gap decreases continuously over the core section from a maximum value to a minimum value. The maximum value may be defined from an edge region (54a,b, 56a,b) of the two faces which borders on an external edge of the core. A method of controlling or regulating the inductance of the output circuit of a DC arc welding apparatus is also claimed.