Quote:
Originally Posted by ajgriff
There's something not quite right about all of this. The bulbs look like they're connected to an output of the PSU rated at 18V and .28A. Four series connected bulbs marked 6.3V at .3A each doesn't make much sense unless I'm completely misinterpreting the arrangement.
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I'd guess that the idea is to under run the bulbs to improve their lifespan. However, the current still seems a bit high unless the rest of the circuitry takes very little power (or it was designed for bulbs that take a lower current).