- on Hobby & Modelling
- Published in issue 12/2007 on page 0
Underwater torch using Luxeon LEDs
It can often be fairly dark under water, especially at greater depths. A diving torch is essential if you want to be able to enjoy the marine scenery (or to help with a rescue operation). It’s easy to go out and buy a new lamp, but an old one still has its uses too! More so if we add some powerful LEDs.
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CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.
R1,R2 = 6Ω8
R3,R4 = 8Ω2
R5 = 1kΩ5
C1,C2 = 1000(F 25V radial
L1 = 100(H (C&D Technologies type 1410478C)
D1 = MUR420
D2 = zener diode 8V2
D3 = BAT82
IC1 = LT1070
D4-D10 = Luxeon Star 3W LXLH-LW3C
7 x collimator lens, 15º, Carclo part # 10003/15
7 x lens holder, Carclo part # 10043
PCB, ref. 070011-1 from www.thePCBShop.com