On 5/26/06, Peter wrote: > > > On Fri, 26 May 2006, Geo wrote: > > The capacitance of a few meters of cable under voltage carries enough > microjoules to weld a reed relay. The real real fix is to add small > resistors in series with the reeds directly at the reeds, and use gas > filled reeds (not vacuum ones). Think about it, there used to be phone > exchanges with millions of these in them. Yup, mercury wetted ones work nicely too, but I suspect they are becoming hard to find. Hard to weld mercury. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist