Gentlemen,

Back in the 1960s, when tubes were coming into service more and more, it
was a widely held belief that they were more expensive to run than
tungsten filament bulbs if turned on for short periods. It was said that
most of the power they consumed was drawn during the 'strike-up' phase so
if they weren't on for at *least* an hour, you might as well be using TF
bulbs.
Well, here we are 50+ years on and tubes are now very much old tech.
What, with the benefit of hindsight, have the Panel to say about those
old efficiency claims of the day?

Just curious.....



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