Bitcoin Forum
September 26, 2018, 03:47:09 PM *
News: ♦♦ New info! Bitcoin Core users absolutely must upgrade to previously-announced 0.16.3 [Torrent]. All Bitcoin users should temporarily trust confirmations slightly less. More info.
 
   Home   Help Search Donate Login Register  
Pages: « 1 2 3 4 5 6 7 8 [9]  All
  Print  
Author Topic: BitForce SC - release notes  (Read 12638 times)
mrb
Legendary
*
Offline Offline

Activity: 1512
Merit: 1013


View Profile WWW
July 26, 2012, 04:02:07 AM
 #161

RHA: or BFL will perhaps use a "Y" USB cable to draw twice the power, like some USB optical disk drive do: http://www.cyberdata.net/products/cables/specialty/images/usb-b_2y_usb-a.gif This would allow 5W for a Jalapeno, or 700 Mhash/Joule...
1537976829
Hero Member
*
Offline Offline

Posts: 1537976829

View Profile Personal Message (Offline)

Ignore
1537976829
Reply with quote  #2

1537976829
Report to moderator
Make a difference with your Ether.
Donate Ether for the greater good.
SPRING.WETRUST.IO
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
Inspector 2211
Sr. Member
****
Offline Offline

Activity: 448
Merit: 250



View Profile
July 26, 2012, 05:06:34 AM
 #162

On a typical motherboard, a USB port is fused with a 1.5 Amp fuse.
Plenty of headroom.

               ▄█▄
            ▄█ ▀█▀
     ▄ ▄███▄▄████▄▀ ▄▄▀▄
    ▀█▄████
██████▀▄█████▀▄▀
   ▄█▀▄
███████████████████▄
 ▄██▀█▀
▀▀▀███▀▀▀█████▄▄▄▀█▀▄
 ▄█▀▀   ▀█
███▀▄████████ █▀█▄▄
██▀  ▀ ▀ ▀
██████████▄   ▄▀▀█▄
     ▀ ▀
  ███▀▀▀▀▀████▌ ▄  ▀
          ████████████▌   █
        █████████████▀
        ▀▀▀██▀▀██▀▀
           ▀▀  ▀▀
BTC-GREEN       ▄▄████████▄▄
    ▄██████████████▄
  ▄██████
██████████████▄
 ▄███
███████████████████▄
▄█████████████████████████▄
██████████████████████████
███████████████████████████
███████████████████████████
▀█████████████████████████▀
 ▀███████████████████████▀
  ▀█████████████████████▀
    ▀█████████████████
       ▀▀█████████▀▀
Ecological Community in the Green Planet
❱❱❱❱❱❱     WHITEPAGE   |   ANN THREAD     ❰❰❰❰❰❰
           ▄███▄▄
       ▄▄█████████▄
      ▄████████████▌
   ▄█████████████▄▄
 ▄████████████████████
███████████████▄
▄████████████████████▀
███████████████████████▀
 ▀▀██████▀██▌██████▀
   ▀██▀▀▀  ██  ▀▀▀▀▀▀
           ██
           ██▌
          ▐███▄
.
SgtSpike
Legendary
*
Offline Offline

Activity: 1372
Merit: 1001



View Profile
July 26, 2012, 05:12:33 AM
 #163

On a typical motherboard, a USB port is fused with a 1.5 Amp fuse.
Plenty of headroom.
Are the thin little circuit traces on the motherboard also capable of delivery that 1.5 amps though?  You could burn out a trace going that far beyond spec if the manufacturer didn't account for it.
Inspector 2211
Sr. Member
****
Offline Offline

Activity: 448
Merit: 250



View Profile
July 26, 2012, 07:13:08 AM
 #164

Motherboard designers are not dumb. If it's fused with a 1.5 Amp fuse, the fuse will blow before the trace burns through or the motherboard incinerates. That's precisely why the fuse is there in the first place.

               ▄█▄
            ▄█ ▀█▀
     ▄ ▄███▄▄████▄▀ ▄▄▀▄
    ▀█▄████
██████▀▄█████▀▄▀
   ▄█▀▄
███████████████████▄
 ▄██▀█▀
▀▀▀███▀▀▀█████▄▄▄▀█▀▄
 ▄█▀▀   ▀█
███▀▄████████ █▀█▄▄
██▀  ▀ ▀ ▀
██████████▄   ▄▀▀█▄
     ▀ ▀
  ███▀▀▀▀▀████▌ ▄  ▀
          ████████████▌   █
        █████████████▀
        ▀▀▀██▀▀██▀▀
           ▀▀  ▀▀
BTC-GREEN       ▄▄████████▄▄
    ▄██████████████▄
  ▄██████
██████████████▄
 ▄███
███████████████████▄
▄█████████████████████████▄
██████████████████████████
███████████████████████████
███████████████████████████
▀█████████████████████████▀
 ▀███████████████████████▀
  ▀█████████████████████▀
    ▀█████████████████
       ▀▀█████████▀▀
Ecological Community in the Green Planet
❱❱❱❱❱❱     WHITEPAGE   |   ANN THREAD     ❰❰❰❰❰❰
           ▄███▄▄
       ▄▄█████████▄
      ▄████████████▌
   ▄█████████████▄▄
 ▄████████████████████
███████████████▄
▄████████████████████▀
███████████████████████▀
 ▀▀██████▀██▌██████▀
   ▀██▀▀▀  ██  ▀▀▀▀▀▀
           ██
           ██▌
          ▐███▄
.
P_Shep
Legendary
*
Offline Offline

Activity: 1176
Merit: 1000


View Profile
July 26, 2012, 04:40:56 PM
 #165

Motherboard designers are not dumb. If it's fused with a 1.5 Amp fuse, the fuse will blow before the trace burns through or the motherboard incinerates. That's precisely why the fuse is there in the first place.

Else it's pretty fucking useless fuse!

 Roll Eyes
SgtSpike
Legendary
*
Offline Offline

Activity: 1372
Merit: 1001



View Profile
July 26, 2012, 07:13:50 PM
 #166

True, I was just thinking of the el cheapo motherboards where they might put a 1.5 amp fuse on it to look good on the outside, but it won't actually run that much.  At least, I've seen similar things happen on other cheap electronics.

Is a fuse for a USB port typically only for one port or two?
Pages: « 1 2 3 4 5 6 7 8 [9]  All
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!