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  1. tgtomm

    dc to dc converter for running 12v gadgets?

    Go onto ebay and search for lm2596hv. This should bring up some cheap but decent quality buck converters with a wide input range and adjustable output from china. They are also very high efficiency. I was going to build a converter from one of these chips before discovering the ready made...
  2. tgtomm

    Bike Light

    I hope you realise that magicshine started by copying the lupine tesla 4. In fact the early magicshines were terrible quality and very cheap (the tesla 4 originally sold for ~$420). Granted knock-offs on ebay are probably worse quality but magicshine don't have any kind of moral superiority over...
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