> Now we agree. And roughly half the brightness with a single diode if 
> the
> characteristics of the lamp were linear. But as they are not, a 
> single
> diode will reduce the brightness much more.

Intuitively I would expect brightness to go down below 50% of full.

But what did you think of my argument that power consumption should be 
ABOVE 50% of full due to the colder than average filament?


        RM 

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