Marcel Birthelmer wrote: > Since the water > can have high resistivity, there will be a voltage distribution in > the volume around the water The voltage distribution in the water has nothing to do with its resistivity. It will be the same as long as the conductivity is uniform. The actual resistivity only effects the current drawn, not the voltages. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .