Originally posted by Allen Burgess
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that's 7.1 watts, the bulbs are rated at 3.5 volts @ 200 Ma which is 0.7 watts each or 1.4 watts for two.
The increase of 1 Ma at 100 volts is an increase of only 0.1 watt yes but he
is using 7.1 watts to power 1.4 watts of light bulbs which would be 19%
efficiency compared to normal. If connected to a 3.5 volt DC source the bulbs
should use 0.7 watts each as a baseline for the rated power it takes to light
the bulbs.
Thane gets a similar result except his power input goes down a bit rather than
up, but the full picture is not given by Thane all the power used to show the
effect is not considered, only a part of the system is measured.
Cheers

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