showlyshah
Banned
- Joined
- Aug 1, 2009
- Messages
- 15
hi frindz i am from kerala state in india. i made a custom 1 w led tourch out of a portable AA mobile recharger which wokz on single rechargable batthttp://akamai.globalsources.com.edgesuite.net/f/593/3445/5d/pdt.static.globalsources.com/IMAGES/PDT/BIG/808/B1004313808.jpg costing less than 2$. ( i got it for 75 indian rupee; <1.5$). and a china made 1 w led costing me 90 Inr(<1.5$). and bought a single AA,1000 ma rechargable batt for 60Inr(<1.5$). and the total cost is 225Inr(<5$). (1$= 45 Inr).
the recharger i got hav an o/p of 4.2v@ 1.2,1000 ma but current o/p is less. but can drive 1 w led , it also hav a toggle switch @ bak side.and with the lense (i got wit the led) it can give a pretty flood light lik beam up2 a range of 75 mts. and the whole set up has the length of the charger itself.
the 2 problems i face r the heating uo of the inductor when the light workz continuously for 5 min which i solved by putting a aluminium heat sink arond the inductor and the current drawn from the batt ( itz about 700 ma!).
wasnt this interestin?
the recharger i got hav an o/p of 4.2v@ 1.2,1000 ma but current o/p is less. but can drive 1 w led , it also hav a toggle switch @ bak side.and with the lense (i got wit the led) it can give a pretty flood light lik beam up2 a range of 75 mts. and the whole set up has the length of the charger itself.
the 2 problems i face r the heating uo of the inductor when the light workz continuously for 5 min which i solved by putting a aluminium heat sink arond the inductor and the current drawn from the batt ( itz about 700 ma!).
wasnt this interestin?
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