Thomas Scherer
About the article

Luxury LED Bicycle Light

Brighten your beam and banish burnt-out bulb blues

Luxury LED Bicycle Light
Having treated himself to a new bicycle fitted out with all mod cons including a shiny hub dynamo, the author was looking forward to many miles of pedalling pleasure. But then disaster struck: after just a couple of hours use the bulb in the front light burned out! Not finding the prospect of repeated replacement attractive, he set out to substitute a power LED for the bulb.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD 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.

Component list
R1 = 2k7
R2 = 560
R3 = 1k8
P1 = 1k preset, miniature, horizontal mounting
C1 = 1000µF 35V, radial, lead pitch 5mm
C2 = 10nF
C3 = 470µF 16V, radial, lead pitch 5mm
D1-D5 = SB540 (Schottky)*
LED1 = 3W power LED, white*
L1 = 100µH 1A (e.g. Reichelt L-PISR 100µ)*
Optics for power LED (20°- type)*
PCB # 070797-1
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