Hi all,
I need a basic circuit with an Output of 5V, It should run off two 1.5V
AA batteries. Thanx!
I need a basic circuit with an Output of 5V, It should run off two 1.5V
AA batteries. Thanx!
Hi all,
I need a basic circuit with an Output of 5V, It should run off two 1.5V
AA batteries. Thanx!
look for DC-DC converters.Hi all,
I need a basic circuit with an Output of 5V, It should run off two 1.5V
AA batteries. Thanx!
jasonbot said:I'm making a USB charger so I'm not to sure about all the deets All I
know is that it should output 5V or else the device will blow..
How much current do you need to deliver?
jasonbot said:No Idea, however much USB needs??? Think it's either 100 or 500mA
EDIT: device (iPod) needs 500mA of power 100mA is not enough to power
it.
This is more complex than it seems. Any device that requires more thanDon Bowey said:A correct USB port will source 500 mA.
jasonbot said:So the theory is there but what will the circuit diagram look like??
mc said:OK, you want 5 V at up to 500 mA from two AA cells. That will run down
the AA cells fairly quickly, but not absurdly quickly... I don't know what
the battery life will be.
Walter Harley said:....
From the curves at http://data.energizer.com/PDFs/E91.pdf one can see that
drawing around 2A is much higher than the battery is rated for, and
substantially reduces its capacity. Extrapolating from those curves I'd
guess the actual capacity at that rate is somewhere around 500mAh, meaning
the batteries will last about 15 minutes. Probably not enough for a
charge.
jasonbot said:I want to power my iPod Video, USB 2.0 device, technically it should
use 500mA, maybe not. I've seen other designs on the internet using
2AA's powering the iPod for at least 3hours.
jasonbot said:I want to power my iPod Video, USB 2.0 device, technically it should
use 500mA, maybe not. I've seen other designs on the internet using
2AA's powering the iPod for at least 3hours.
meter.
jasonbot said:I want to power my iPod Video, USB 2.0 device, technically it should
use 500mA, maybe not. I've seen other designs on the internet using
2AA's powering the iPod for at least 3hours.
jasonbot said:lol, First I need to MAKE a 5V power source???
are not any large differences in efficiency between different chips of that
general type.