| http://www.w3.org/ns/prov#value | - BRIEF DESCRIPTION OF THE DRAWINGS An embodiment of the invention will now be described, by way of example only, with reference to the drawings, of which: FIG. 1 is a schematic diagram of a known bridge circuit employing a number of semiconductor switching arrangements; FIG. 2 is a schematic diagram showing a number of switching modules making up one of the switching arrangements shown in FIG. 1; F
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