I am going to make a laser much like drlava's posted here http://www.laserpointerforums.com/forums/YaBB.pl?num=1209532949.
I'm also using his driver, which from what I've heard was 88% efficiency.
I also heard mAh is MilliampHour or how much current a battery will discharge over a period of one hour.
I'm planning on using batteries similar to http://www.amazon.com/Energizer-Rec...4?ie=UTF8&s=electronics&qid=1216341917&sr=8-4, or 850mAh.
I dont think my local walmart has eneloops, the arguabley best battery.
So... 850x2 (using two aaas) = 1700mAh
The driver is 88% efficient and I'm driving my laser at 300mA. I'd multiply 300mA by 1.12 to get 112% (because the driver is 12% inefficient) to get 336mA
I divide 1700/336 and I get 5.09523... or 5 hours.
And since batteries sag, would it be reasonable I could expect anywhere from 3-4 hours?
Thanks
I'm also using his driver, which from what I've heard was 88% efficiency.
I also heard mAh is MilliampHour or how much current a battery will discharge over a period of one hour.
I'm planning on using batteries similar to http://www.amazon.com/Energizer-Rec...4?ie=UTF8&s=electronics&qid=1216341917&sr=8-4, or 850mAh.
I dont think my local walmart has eneloops, the arguabley best battery.
So... 850x2 (using two aaas) = 1700mAh
The driver is 88% efficient and I'm driving my laser at 300mA. I'd multiply 300mA by 1.12 to get 112% (because the driver is 12% inefficient) to get 336mA
I divide 1700/336 and I get 5.09523... or 5 hours.
And since batteries sag, would it be reasonable I could expect anywhere from 3-4 hours?
Thanks