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.

Peter
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist