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Old 21-01-2013, 15:23   #16

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Re: $3 for a 6W LED interior light

"When they say 12 volts they mean 12 volts,, not 13.5 "
Except when the product is automotive lighting. In this case an automotive dome light, which means it is designed for a 14.4 volt power source for normal use, with a nominal 12 volts when the car engine is off. Perfectly safe for boat use.

How good is it...for that price? In a non-critical use? Probably good enough.

OTOH when someone says "CREE!" for dirt cheap, I have to think there are plenty of counterfeits on the market, just like anything else. Lots of profit, and who's going to really know?

hellosailor is offline   Reply With Quote
Old 21-01-2013, 15:42   #17
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Boat: Ebbtide 33' steel cutter
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Re: $3 for a 6W LED interior light

If anyone is interested in a halfway house - voltage regulation of a whole lighting circuit instead of current reg then these seem to work well.
2A output, so it says anyway.

3.5-28V to 1.25-26V DC-DC | eBay

I've been using one for a powered USB block, seems very stable. Bit RF noisy but a capacitor on the input seems to clean that up OK.

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