Isn't that what LDOs are all about? They give off less heat and therefore use less energy.pezman wrote:i dont want to use a 7805 bacause it waste power and i want as much playing time as i can get.
NOAC can run well with unregulated current ~5v?
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that's understandable...but when your voltage divider voltage drops below whatever the threshold is for the logic family you're using, it won't work anymore. The 7805 will let you play longer than just trying to cut the voltage down. Besides, you would constantly be wasting power in the resistors. If you want to have longer play time, look up LDO regulators.
What I have shown you is reality. What you remember, that is the illusion.
"Say, what does this button do?"
All the dishes rattle in the cupboards when the elephants arrive
"Say, what does this button do?"
All the dishes rattle in the cupboards when the elephants arrive
that would work...but i dare you to try to find 1 and 2 ohm resistors! If you're insistent un using this method, i'd use 10k and 20k ohm. But think of this. When your battery drops to about 6.5 volts, the output to your nintendo will only be 4.3v. Logic high is probably a 4v threshold, so you're bound to get some erratic behavior with your battery only dropping 1v. With an LDO regulator your battery can drop to about 5.7v on average before it drops out.
What I have shown you is reality. What you remember, that is the illusion.
"Say, what does this button do?"
All the dishes rattle in the cupboards when the elephants arrive
"Say, what does this button do?"
All the dishes rattle in the cupboards when the elephants arrive
theoretically the resistors would work, i wasn't gonna use those numbers. to tell you the truth i just hate integrated circuits, chips, transistors, and what not. they make me feel like i cant do it myself. i suppose i will use the 7805, especially since charging the not dead batterys often will lead to a strong memory effect. im so stubborn.
remember 8/12, i know i will.(and get mozilla)
hopefully those ICs you hate so much will make me a living some day 
Anyway, I dont like the 7805 personally. LDO regulators are much more efficient, which is defintely what you want in a battery powered situation. If you want to be really efficient, you could use a switching regulator, but we won't go there. 
Anyway, I dont like the 7805 personally. LDO regulators are much more efficient, which is defintely what you want in a battery powered situation. If you want to be really efficient, you could use a switching regulator, but we won't go there. What I have shown you is reality. What you remember, that is the illusion.
"Say, what does this button do?"
All the dishes rattle in the cupboards when the elephants arrive
"Say, what does this button do?"
All the dishes rattle in the cupboards when the elephants arrive
oh I went there http://www.interq.or.jp/japan/se-inoue/e_ckt22.htm!
just kiddin,
is this an ldo http://www.rc-cam.com/dc-dc.htm its 7v to 5v and i could use 7. would this be efficient?
just kiddin,
is this an ldo http://www.rc-cam.com/dc-dc.htm its 7v to 5v and i could use 7. would this be efficient?
remember 8/12, i know i will.(and get mozilla)
that's the most efficient you're going to get without resorting to a switching regulator configuration. Just make sure you don't leave out the input and output capacitors.
What I have shown you is reality. What you remember, that is the illusion.
"Say, what does this button do?"
All the dishes rattle in the cupboards when the elephants arrive
"Say, what does this button do?"
All the dishes rattle in the cupboards when the elephants arrive