Former_Mag_User
Enlightened
- Joined
- Jun 4, 2004
- Messages
- 800
8 or 6 AA With 3 LuxIII\'s?
I want to use a fatman board to drive 3 LuxIII's, I want to make it dimmable by using a pot. I was originally going to use 2 3AA battery holders, but i guess 8AA will give a longer runtime. I have a couple of questions:
I seem to remember reading that NiMh AA cells have a larger diameter than alkie AA's. Will 8 AA NiMh fit in the 2D using an 8AA to 2D battery holder from the sandwich shoppe?
Will 3 LuxIII's run Ok using the fatman and 8AA NiMh? I am planning to use a high Vf luxeon (K or L) so that the battery voltage will be less than the toal Vf of the LED's since the fatman is a boost circuit. 8 NiMh = 9.6V / 3 LuxIII (T**K bin) = 10.5V-11.2V
Or, would it be a better choice to use 3 T**J LuxIIIs and 6 NiMh?
I also appreciate any suggestions.
Thanks. /ubbthreads/images/graemlins/grin.gif
I want to use a fatman board to drive 3 LuxIII's, I want to make it dimmable by using a pot. I was originally going to use 2 3AA battery holders, but i guess 8AA will give a longer runtime. I have a couple of questions:
I seem to remember reading that NiMh AA cells have a larger diameter than alkie AA's. Will 8 AA NiMh fit in the 2D using an 8AA to 2D battery holder from the sandwich shoppe?
Will 3 LuxIII's run Ok using the fatman and 8AA NiMh? I am planning to use a high Vf luxeon (K or L) so that the battery voltage will be less than the toal Vf of the LED's since the fatman is a boost circuit. 8 NiMh = 9.6V / 3 LuxIII (T**K bin) = 10.5V-11.2V
Or, would it be a better choice to use 3 T**J LuxIIIs and 6 NiMh?
I also appreciate any suggestions.
Thanks. /ubbthreads/images/graemlins/grin.gif