Bob M. wrote:
"CJT" wrote:
... and bulbs last (almost) forever with electronic ballasts.

This I've not heard before. Why do they last longer? It seems the filaments
are still being subjected to the stresses of current inrush when turned on.

The cheap electronic T8 ballasts I've been using have one wire that goes
to both filaments pins at the end of a tube, so current never flows from
one pin to the other through the filament.

Nick