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can you make ipod charger with only psu?

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jhyukkang   09-08-2008 at 05:52:34 AM

hi,
i got a psu, brand is sunbeamtech, for free. im not putting it into my computer, because i have corsair psu.
so i thought since usb ports are 5V, i might be able to make ipod charger with this psu.

i know how to turn on the psu without mobo, (just connect green and black wire.)
in this psu, red is 5V Yellow is 12V and Orange is 3.3V

can i connect 5V (red and Black) to Ipod USB wire? ( i know which of those four are + and - for power 5V in USB)

has anyone tried it?

------------------------------ E4400, 3GB DDR2 PC2 5300, 2X 320GB HDD, 3X DVD RAM DL,
Radeon HD 2600Pro ICEQ Turbo, OCed (783/575) from (600/500) factory OC (650/525)
Corsair VX 450
GA-P35-DS3L
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Andy2008   09-08-2008 at 10:54:05 AM
- 0 +

You'll want to be using the +5VSB rail; that way you won't need to switch on the PSU. Don't forget an in-line fuse.

Andrew

Reply to Andy2008
jhyukkang   09-09-2008 at 03:26:44 AM
- 0 +

what is in-line fuse??

Reply to jhyukkang
jhyukkang   09-09-2008 at 06:02:50 AM
- 0 +

i meant to connect DIRECTLY from psu to USB which is connected to IPOD!! im not using any resistors or things like that..NOTHING JUST WIRES

Reply to jhyukkang
Andy2008   09-09-2008 at 10:38:12 AM
- 0 +

Example of in-line fuse holder:
http://uk.rs-online.com/web/search [...] &R=4976254

It's a safety thing. I can't find any data for the iPod's charging current to suggest what rating of fuse to use. You may feel confident enough in your wiring ability and the overcurrent protection of the PSU to not use one.

Here's the pin-out of a 20-pin ATX power connector so you can see where +5VSB is:
http://www.duxcw.com/faq/ps/ps1.htm

Andrew

Reply to Andy2008
jhyukkang   09-10-2008 at 02:37:53 AM
- 0 +

thanks for helping me out, does it matter if i use different fuse??

airsoft fuse? it uses 8.4 Volt NI-MH 1100mAH Battery,



does that line in fuse helps?? it is 10000mA, and 32V
as compared to ipod, 500mA, and 5V (USB)

------------------------------ E4400, 3GB DDR2 PC2 5300, 2X 320GB HDD, 3X DVD RAM DL,
Radeon HD 2600Pro ICEQ Turbo, OCed (783/575) from (600/500) factory OC (650/525)
Corsair VX 450
GA-P35-DS3L
 Reply to jhyukkang
Andy2008   09-11-2008 at 12:46:55 PM
- 0 +

If you wire an ammeter (multimeter set to measure amps) in series with it while it's charging, see what the current is and multiply that by 2, then round up the value to whatever fuse rating is available, you will have a reasonable value for it. Or try a 1A fuse and if that blows immediately and you are sure there are no wiring faults then use a 2A fuse. The specs for USB say 500mA max at 5V.

Andrew

Reply to Andy2008
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