1 watt Brinkmann conversion from 4.5v to 3.6v

LilRedDog · Nov 15, 2005

I purchased a Brinkmann 1 watt Luxon led headlamp.

I'm pretty sure I can by-pass the 3.3 ohm resistor, and run the LED straight off a rechargable battery pack @3.6v, however I wanted to run it by someone that knows better before I fry my new play toy.

T.I.A.

legtu · Nov 15, 2005

I'd recommend using a lower value resistor instead of bypassing the stock resistor...

LilRedDog · Nov 15, 2005

Thanks,

Radio Shack only sells 1/4 watt resistors, in these ohm ranges, and I calculate I need 0.6 ohms using this calaculator http://www.csgnetwork.com/ledsingresistancecalc.html

Could I use 4, 1/4 watt 3 ohm resistors? My electrical engineering is limited to the 300 in one electronic set I got 30 years ago, so be gentle...
I figure this spilts the wattage across 4 1/4 watt bridges, and gives me an overall .75 ohm resistance which is very close to the .6 calculated.

Is that correct?

legtu · Nov 15, 2005

Looks correct to me.

If possible, try to measure the current going into the LED and the voltage across it and base your computations from those values.

1/4 watt resistors should be more than enough for your intended application.

1 watt Brinkmann conversion from 4.5v to 3.6v

LilRedDog

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