Abstract: Systems and methods are provided for exchanging electrode tips, e.g., electrode tips used in resistance spot welding, and disposing of used/unusable electrode tips. Used/unusable electrode tips may be collected, e.g., while within an assembly line. Such used/unusable electrode tips may be routed to a receptacle(s) reside outside the assembly line. Accordingly, disposing or removing of the used/unusable electrode tips can be accomplished without stopping the assembly line, and decreasing any chance for safety events.

Abstract: An apparatus and a method are disclosed wherein simultaneous electrical well logs can be made with a plurality of focused currents emitted from a plurality of electrodes located along a single equipotential surface of a housing. The focused currents are generated in response to a single voltage signal from a single power supply connected between the housing and a single current return electrode. A voltage reference is located on a cable which suspends the housing and the current return electrode in a well borehole, and a voltage detection circuit detects a voltage offset between the voltage reference and the housing.