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Reliable +5v from USB connection?

hevnsnt

Lifer
Mar 18, 2000
10,868
0
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Does anyone have any experience with pulling +5v from a usb connection?

How reliable is it? How dirty is it?
 

radioouman

Diamond Member
Nov 4, 2002
8,632
0
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I've wondered about this for charging/powering my digital camera while I'm transfering pics from it.
 

NutBucket

Lifer
Aug 30, 2000
26,434
268
126
I agree. Its just a tap of the 5V rail on the board. Just don't overdraw the rail;)
 

edro

Lifer
Apr 5, 2002
24,329
67
91
Think about all USB devices that are powered by the bus (mice, headphones, speakers, usb hubs, etc)...
 

Mark R

Diamond Member
Oct 9, 1999
8,513
13
81
The +5V is regulated, but it will sag slightly under load.

The output is protected at 0.5A - if you attempt to draw more than that the port will be disconnected, and windows will pop up an error message.
 

Amused

Elite Member
Apr 14, 2001
53,989
7,204
126

hevnsnt

Lifer
Mar 18, 2000
10,868
0
0
Originally posted by: Mark R
The +5V is regulated, but it will sag slightly under load.

The output is protected at 0.5A - if you attempt to draw more than that the port will be disconnected, and windows will pop up an error message.
exactly the info I was looking for... thanks!
 

mugs

Lifer
Apr 29, 2003
48,902
10
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Originally posted by: edro13
Originally posted by: NutBucket
Originally posted by: FrustratedUser
Why do you need a fan in the mouse? OC'ed LOL!?
Yeah, WTF? It is TOTALLY pointless!
Haha, you are #487234892. The airflow is OUT, into my palm. My palms sweat when I game.
That sure looks like a cordless mouse to me... so how is it drawing power from the USB port?

Nice work though. :)

Edit: On closer examination, there seems to be a spot on the mouse for a cord to come out... but no cord... ?
 

So

Lifer
Jul 2, 2001
25,914
3
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Originally posted by: Amused
Originally posted by: edro13
Originally posted by: NutBucket
Originally posted by: FrustratedUser
Why do you need a fan in the mouse? OC'ed LOL!?
Yeah, WTF? It is TOTALLY pointless!
Haha, you are #487234892. The airflow is OUT, into my palm. My palms sweat when I game.
So you OC'ed your palms?
All the hair on them means they get hot extra fast.
 

edro

Lifer
Apr 5, 2002
24,329
67
91
The cord is just unplugged from those pics... It is a regular corder Explorer 3.0
 

Howard

Lifer
Oct 14, 1999
47,989
9
81
I appreciate the idea of cooled palms, but what do you do with the mousing hand that makes it sweat so much? After a few hours of FPS my palm is only moist.
 

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