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Well, this is mega-easy. Each white led requires 3.6V and 5 of them
need a total of 18V. There is no need for resistor at all :-)
You do need to drill all these holes : masonry drill bit 3/16" and then enlarge the hole with 1/4" drill Treat these brick as cement : I learnt the lesson already, one of my
HSS drill bit was gone for good :-(
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These 5 white leds are connected in series. Hock up to 18V trnasformer. |
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My transformer can pump up to 1.7A, pretty sufficient for these leds ( each white leds requires 20mA only) |
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That's it :-)
My indoor garden !! If you want to put them outside, make sure you insulate them well against
water. "Short circuit" will probably burn your transformer !!
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