> I've got some 12v units and although they are
> rated 16W they don't give the same amount of light as a 240v 16W
> tube.... Any ideas??

Because all electronic items for 12V use a different system for measuring
wattage. Ever notice how a car stereo rated at 300 watts can use a 7 amp fuse,
and how it is not anywhere near as loud as a 120 watt home stereo? Basically,
they lie.

Your 12 volt 16 watt lamp may not really be using 16 watts, or perhaps it is
massively inefficient and only half the power is getting to the bulb. Or a
combination of the two.

Cheers,

Bob

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