1.2V Ultra Bright White LED Driver

[maldihtah13]

I'm using a 10mm led from deeco. i've replaced the value to fit my inductor. Can any of you provide some basis for the design like the computation so that I can maximize the value that I can use. I don't know if the RCL meter I used is correct but I only have 3.45 mH.

[florenz]

Can this be used for Luxeon LED 3.3V, 250ma?, i.e. I will use 3 AA (3 x 1.2) = 3.6V.

Will it work?

[maldihtah13]

Can this be used for Luxeon LED 3.3V, 250ma?, i.e. I will use 3 AA (3 x 1.2) = 3.6V.

Will it work?

it may work but it is better if you have a constant current source to protect the LED. Mahal pa nman nyan.

[macky]

Can this be used for Luxeon LED 3.3V, 250ma?, i.e. I will use 3 AA (3 x 1.2) = 3.6V.

Will it work?

250mA, i think that circuit is not capable of delivering even a 200mA output current.

[lightelectro]

sino na nakagawa nito? pwede ba yung ordinary leds?

[mArKhAo]

experiment! hehe... ung isa plng ngagawa q e... 1.5volts paiilawin ung isang ordinary led... with coil, transistor and 1 resistor... try mo poh..

[lightelectro]

ilang times sya na mas maliwanag?

[maldihtah13]

sino na nakagawa nito? pwede ba yung ordinary leds?

eto yung akin nakapost sa page 1

[macky]

pwede rin sya driver sa mga laser(nabibili sa muslim), tested ko na po na hindi over-driven.
1.2volts na lang ang natitira sa battery pero malinaw pa rin ang laser.

[1110000]

Here is my version:



The coil was from a nokia charger.

you can use those resistor type 100uH inductors from an original nokia phone charger

[kirk simone]

try ko nga hehehe

[maldihtah13]

you can use those resistor type 100uH inductors from an original nokia phone charger

the choke coil was from original nokia charger pero napalitan ko na ng mukhang resistor na coil from alexan.