Howdy. I am interested in beginning a project that I found at the following links:
http://www.extremecircuits.net/2010/06/novel-white-led-torch_18.html
http://hobby.dapj.com/2009/09/lm3914-dimming-flashlight.html
Basically I want to use the LM3914 or something similar to create a white LED flashlight that in creases or decreases output by sequentially turning LEDs on or off. My only concern after reading the above links are that it doesn't seem the LM3914 is powerful enough to feed HPLEDs.
What would be the best way to obtain a 500+ lumen output when all LEDs are lit? It doesn't matter to me if a few HPLEDs are used or a bunch (say 50-100) of less powerful LEDs are used. I was also thinking that a few LM3914's could be used together. I'm looking for a good place to start and my initial thoughts are that the LM3914 would be very helpful in this design. If I am going to wrong way with this, feel free to chime in. Thank you!
http://www.extremecircuits.net/2010/06/novel-white-led-torch_18.html
http://hobby.dapj.com/2009/09/lm3914-dimming-flashlight.html
Basically I want to use the LM3914 or something similar to create a white LED flashlight that in creases or decreases output by sequentially turning LEDs on or off. My only concern after reading the above links are that it doesn't seem the LM3914 is powerful enough to feed HPLEDs.
What would be the best way to obtain a 500+ lumen output when all LEDs are lit? It doesn't matter to me if a few HPLEDs are used or a bunch (say 50-100) of less powerful LEDs are used. I was also thinking that a few LM3914's could be used together. I'm looking for a good place to start and my initial thoughts are that the LM3914 would be very helpful in this design. If I am going to wrong way with this, feel free to chime in. Thank you!