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| USB power - how much is too much? |
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| Smeghead:
*Googles wall wart* um ok, a 5v AC adapter? |
| gryhnd:
--- Quote from: Smeghead on June 07, 2010, 04:59:12 pm ---*Googles wall wart* um ok, a 5v AC adapter? --- End quote --- A wall wart isn't limited to 5v, but yes. I bet you have tons from dead electronics laying around. Most common ones I end up with are 5v, 9v and 12v. |
| orchidius:
I just checked a 9v AC adapter that I had nearby, but it only has an output of 200ma... That's even less then the 500 a USB carries... A fully lit RGB LED takes up 60ma, so you'd only be able to power 3 of those from that adapter... :-\ It'd take a hell lot of adapters like that to power my whole CP ;D And wouldn't installing a 50amp fuse in the circuit eliminate all possible problems (all LEDs are already wired with the right resistors)? Seems like a piss-easy solution to me ??? |
| Blanka:
I would say any USB led driver has a input for extra power to feed the LED's. |
| drventure:
--- Quote from: MonMotha on June 07, 2010, 02:00:42 pm ---If you are using an external hub, make sure it is powered and has a brick rated for 500mA (0.5A) times the number of ports you'll be using. --- End quote --- That's key right there with hubs. Many hubs (and I've gone through a number of them) are supplied with inputs that won't support all the ports being maxed out, esp some of the 7 port hubs floating around. Be sure to check the supply. If you don't, all sorts of things will go wonky, from spinners only moving the cursor in one dir, to buttons mysteriously pressing or locking. |
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