uping voltage

new york cheech · Post by **new york cheech** » Fri Aug 12, 2005 11:53 pm

and thats with 2 1000mah battery packs?

so ur saying go for the 200mah regulator?

usbcd36 · Post by **usbcd36** » Fri Aug 12, 2005 11:55 pm

It's simple division and proportions (you know, means and extremes?). Just find the usage of the portable, divide it into the mAH of the batteries (in this case, it was 2,000mAH) and take any decimal following the number. I only used hundreths, you can go further. In any case, put the decimal in a whole number over the place value (if you went with the first 2 places, put the bottom number as 100, etcâ€¦) and set it equal to x over 60. Solve as ya did in algebra 1. That gives you the minutes, the hours are the whole number (if any) in the first quotient.

new york cheech · Post by **new york cheech** » Fri Aug 12, 2005 11:57 pm

yeah i can do that but i dont know what the usage of the n64p is

usbcd36 · Post by **usbcd36** » Sat Aug 13, 2005 12:00 am

Oh, the 3.3v line takes about 1.5A max, it usually runs at about 1.2A, and the 12v (it is regulated by a 7805, so it is technically a 7-35v line) line takes about 150mA max.

new york cheech · Post by **new york cheech** » Sat Aug 13, 2005 12:03 am

ok what about the screen with a 7808 regulator on it, and is the 3.3v line still 1.5ah if i use the 3.3v regulator?

usbcd36 · Post by **usbcd36** » Sat Aug 13, 2005 8:32 pm

The screen with a 7808 will still take the same amperage (with my superbright LED mod, about 499mA) as it would at 9.5v. And yes, the N64 would draw 1.5A at 3.3v if you used a regulator, not an efficent use of power at all.