DIY contactless bike dynamo

It is very important to have lights on your bicycle but it can be very boring to replace those batteries. A classic bike dynamo has a few disadvantages such as slowing down the bike and making excessive noise while rubbing off of a tire. There are contactless dynamos, but why buying one when you can build one yourself?

This bicycle light is made out of three LEDs and a charge capacitor. It is powered by a DIY contactless dynamo made from a relay coil and some hard drive magnets. The circuit is constructed so that one LED is kept steady on while driving and the other two blinking.

© vbnicolau

[ Source: vbnicolau ]

Beskontaktna dinama za biciklo Bookmark and Share Comments (13)

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comment [13]

mozeli mi neko reci gdje se mogu naci ovakvi namotaji i moguli se kako napraviti

comment [12]

znaci nesto kao brzinomjer u kolima :)
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comment [11]

Ja sam ovo bio napravio sa namotanom tankom žicom na feritu,bez ove šeme sam sa ispravljačem koristio voltmetar koji mi pokazivo brzinu kofol, a poslije sam koristio sa LEd...

comment [10]

Bi li mi ko posalo kako se pravi ova dinama?
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comment [9]

aaa mozeli mi neko obajsniti kako da satvim magnete,dali da ih spojim,ili da na jedan kraj tocka stavim jedan,a na drugi drugi magnet???

comment [8]

zanimljiva stvar

comment [7]

eto ovdje ti je pojasnjeno, pa napravi sebi.
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comment [6]

cudo je ovo ali ja sam tek 8 razred ja neznam napravit el shemmu a kazu da niko mi to nemoze pojasnit kako napravit da za to trebam zavrsit elektro

comment [5]

Javi rezultate kad napravis...
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comment [4]

Pokušat ću ovo napravit, ali sa dva namota...
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