hmmm (on topic content) we could make that into the ultimate continuous controller knob... turn it CW and it goes UP, CCW it goes down... ad infinatum !!! H^) harry Monty Brandenberg wrote: > On Fri, 6 Aug 2004, Ian Fritz wrote: > > > (Otherwise you would > > see a voltage increase every time you went around the loop.) > > Ah, yes, Escher's Law. > > m