for night riding 4x4 camping type of thing or at dunes. never never ever near a road that would be dangerousDid anyone else notice the OP said this is for a car?
Gulp.
Getting closer. Now change Q2 from LM350T to something like N ch FET, IRF540, 28A, 100V, TO220 pkg. Rfd is not critical as it will be operating in linear range. There are hold down clamps for some high W LED's, maybe for Cree?
I like .22Ω for R4, R5.
Also, I would measure Vf of each LED to match strings Vf as close as possible.
Well i can do this it seems like everyone is recommending this to be the case and if i do this i would only use a .22Ohm 3W i believe resistor as well as no R4 or R5 which is fine as well... im thinking if i go this rout i may as well shoot for 4 LED's per string to require a current something around 13.2 requiring a minimum of around 13.8 i think.I'm leaning the same way. The extra components are not so expensive, and they would help spread out heat dissipation to more surface area. The OP could eliminate the balancing resistors I suggested earlier, as long as the MOSFETs can take all the heat.
Also check pirate 4x4 where there are a couple of guys who bbuilt there own led bars ..thanks for all the help you guys are giving me on this i really do appreciate this
Well that changes everything! Ignore my previous post. No resistors are needed.yes lol i meant all in series.
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