IlluminatingBikr
Flashlight Enthusiast
- Joined
- Feb 26, 2003
- Messages
- 2,320
Yesterday I made my first flashlight! /ubbthreads/images/graemlins/grin.gif
It runs off of two AA's and has 2 white 5mm LEDs in parallel, and a 150 ohm resistor.
The problem is, I am getting around 3 volts from the 2 AA's. The LEDs are rated at 3.6 volts, with a maximum voltage of 4V.
<ul type="square"> [*]How much brighter would the LEDs be if they get between 3.6V and 4.0V rather than the current 3 volts? [*]Is there any way I can get more voltage without using lithiums? (Lithiums are like $9.00 for 2xAA! /ubbthreads/images/graemlins/broke.gif) [/list]
It runs off of two AA's and has 2 white 5mm LEDs in parallel, and a 150 ohm resistor.
The problem is, I am getting around 3 volts from the 2 AA's. The LEDs are rated at 3.6 volts, with a maximum voltage of 4V.
<ul type="square"> [*]How much brighter would the LEDs be if they get between 3.6V and 4.0V rather than the current 3 volts? [*]Is there any way I can get more voltage without using lithiums? (Lithiums are like $9.00 for 2xAA! /ubbthreads/images/graemlins/broke.gif) [/list]