(Tag added, subject changed)
Russell,

On Sat, 18 Apr 2009 19:45:58 +1200, Russell McMahon wrote:
>...
> Getting 90+ l/W from an LED is easy enough nowadays. Above CFL efficiency 
> and approaching that of a straight fluorescent tube.

Are straight fluorescent tubes the most efficient only when powered directly?  I have recently bought a converted ambulance for use as a mobile radio shack, and 
three of the four fluorescent lights in the back (powered by inverters from 12VDC) have failed.  Rather than try to debug the inverters, or buy new ones, I was 
going to get strips of LEDs instead, thinking they would use less power.  

Without knowing the inverter efficiency, are the odds in favour of the LEDs using less power than inverter-fed fluorescent tubes, do you think?

Cheers,


Howard Winter  G1BYY,  IO91tr
near St.Albans, England

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