<> > My favorite graph on the data sheet is "Number of pins remaining <> > vs. number of socket insertions". (Wasn't this originally published <> > in an April 1 issue of _Electronics_ in the 70's?) <> <> And the Vff .vs. Iff graph, complete with burn-out just after 6.3V.... < <I wonder what fraction of new EE graduates today would recognize the <significance of 6.3 VAC? or 12.6vac or historically 12.6,12.6,12.6,35,50 (all Vac). Allison