Hey audio, im not sure how you're confused? The LED im using is from allelectronics, I provided a link to it @ the beginning of the thread, thats the one im using. I think the reason you think im using a smaller beam angle is that I put the LED in a reflector from a maglite, which would give me a smaller beam angle.
Hmm, my batteries must have been low because when I first got the thing, I hooked it up to the batteries w/ a resistor and kept lowering the resistance till i realised that I didn't need a resistor at all. I have to check those batteries' voltage.
Thermal connection to the case should be made.
How do I do that Oznog? I plan to put the LED in a maglite flashlight, I'm sure I could use the aluminum flashlight case as a heatsink...
Alrighty than, Ill just have to order those parts for the chip-torch and it looks like ill be in business :lol:
I really need some input on my idea of direct driving the LED (with a resistor of course :lol: ) until it becomes dim, and then using the chip-torch circuit.
I think I confused everyone earlier when I said I was going to use the DC-DC converter, i meant the chip-torch. The ciruit that chiba provided.
EIDT: Last night i was bored and decided to see just how much current an incandescent light bulb would pull. I read around 900mA!!! If I draw 150mA max, that means I can have a flashlight that will last
6 times as long, at around the same intensity of light! im pretty stoked.