Info Manual

This is a test if high power led can be used as led  headlight, and to replace my sinski beta 150cc bulb headlight with this. It is a 7 strings of 3 watts high power led that will driven at 28v 700mah. Although the unit is not in near completion because of thermal reliability. I have not incorporate it on my scooter just yet.


This is the beam..(shot taken away from the beam of the led to protect the ccd of my camera). It is not quite powerful because as i had said, there is a thermal runwaway on my CC driver. I had used the NCP3063 by on semiconductor and I based the design on their datasheet. with an efficiency of 79% which is too low for my desired application and those power losses gone to waste by heat build up.




This is the video of the beam shot which was taken at a very dark place without any other light aside from the led.

This page an update to my previous post Project LED headlight to where i incorporate it already to my sinski 150cc headlight housing. (actual BEAM shot on road not yet taken)

The photo shown with a beam shot taken at an angle of 45 degree in front.






Constant current led driver is needed to prolong the life of the led array and to compensate for the changes in input voltage during use.























The headlight housing to where i'll be incorporating this led headlight prototype to replace my scooter filament type headlight. The original uses 35watts for low beam and 35 watts for high beam.









Headlight lens need to be removed in order for me to fit the led headlight collimating lens. The cover of the headlight was easy to dismantle..(note that new or brand new housing is not that easy to remove because of the anti moist glue.) my headlight perhaps due to the long period it was stock, the glue just didnt stick that much, and dis assembly was a snap.






With the original bulb remove, the hole to where my led headlight bare board, is actually fit, like pair made for each other..:-)) and no more additional drilling holes for this project.









Perfect fit without the collimating lens.












with collimating lens attached on the led array to focus the beam in front.











view of the heatsink for the bare board of the led array. Heatsink is needed, (fan not necessary when the bike is moving, rushing air in front will cool down the heatsink..










And its time to power up the led headlight to see how it went well. I used for this test 12 volts 1.5 ampere wall adapter.

Led headlights are beginning to emerged from the open although there is still no true led headlight available in the market, they are still on the experimental stages for beam, focus, reliability, and if there was, it will be expensive.So why not experiment with leds and come up with your own. Using one Ic and some discrete components, you can do so.


 In this page, tried using max16820at+t by maxim

The MAX16819/MAX16820, step-down constant-current high-brightness LED (HB LED) drivers provide a cost-effective solution for automotive interior/exterior lighting, architectural and ambient lighting, LED bulbs such as MR16 and other LED illumination applications.

The MAX16819/MAX16820 operate from a 4.5V to 28V input voltage range and feature a 5V/10mA on-board regulator. A high-side current-sense resistor adjusts the output current and a dedicated PWM input (DIM) enables a wide range of pulsed dimming.