REVscene - Vancouver Automotive Forum


Welcome to the REVscene Automotive Forum forums.

Registration is Free!You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today! The banners on the left side and below do not show for registered users!

If you have any problems with the registration process or your account login, please contact contact us.


Go Back   REVscene Automotive Forum > Vancouver LifeStyles (VLS) > Computer Tech, Gaming & Electronics

Computer Tech, Gaming & Electronics THIS SPACE OPEN FOR ADVERTISEMENT. YOU SHOULD BE ADVERTISING HERE!
Silicon Valley.
Tips & tricks, tech support, home theatre, online gaming, reviews, latest news...

Reply
 
Thread Tools
Old 05-11-2010, 07:55 PM   #1
Wunder? Wonder?? Wander???
 
Join Date: Nov 2004
Location: Richmond
Posts: 228
Thanked 0 Times in 0 Posts
Failed 0 Times in 0 Posts
technical help needed: usb y cables

ok so how much power comes out of these cables?

a Y usb cable


does 5 volt + 5 volt = 10 volt?


thanks in advance

Edit: does my post have a long empty space? i see it on my end and its getting annoying >.<
Advertisement

Last edited by homey_v; 05-11-2010 at 08:00 PM.
homey_v is offline   Reply With Quote
Old 05-11-2010, 08:09 PM   #2
MOD MOD MOD MOD MOD
 
nabs's Avatar
 
Join Date: Dec 2003
Location: vancouver
Posts: 5,898
Thanked 3,535 Times in 1,169 Posts
Failed 212 Times in 81 Posts
5Vdc + 5Vdc = 10Vdc! ur right!

no long empty space.
__________________
Quote:
[03-07, 03:26] Yodamaster - The feeling when you quickly insert without hitting the sides
nabs is offline   Reply With Quote
Old 05-11-2010, 08:54 PM   #3
Wunder? Wonder?? Wander???
 
Join Date: Nov 2004
Location: Richmond
Posts: 228
Thanked 0 Times in 0 Posts
Failed 0 Times in 0 Posts
THANKS!!!! =D
homey_v is offline   Reply With Quote
Old 05-12-2010, 12:39 AM   #4
HELP ME PLS!!!
 
johny's Avatar
 
Join Date: Jan 2004
Location: here
Posts: 5,793
Thanked 146 Times in 67 Posts
Failed 208 Times in 42 Posts
if it's combining 2 usb ports... it'll still be 5v just more current available.
johny is offline   Reply With Quote
Old 05-12-2010, 01:14 PM   #5
Wunder? Wonder?? Wander???
 
Join Date: Nov 2004
Location: Richmond
Posts: 228
Thanked 0 Times in 0 Posts
Failed 0 Times in 0 Posts
ahh thats what i thought...but my brother was telling me no no itl be 10 volts...thanks for the information you 2
homey_v is offline   Reply With Quote
Old 05-12-2010, 04:59 PM   #6
Rs has made me the man i am today!
 
ecsw's Avatar
 
Join Date: Nov 2002
Location: Langley
Posts: 3,257
Thanked 17 Times in 16 Posts
Failed 1 Time in 1 Post
no, usb y cable combines 2 USB amp (5V 500ma) to make 5V 1000ma (1A).

Over amp is ok. device will only take whatever is necessary. Over voltage by over 10% of spec will fry the device.

Unless you have a y cable that's in serial connection + to -, most usb y is combining + on + and - on -.

iPod is a different story. It has circuit to monitor the voltage from 5V to 14v (possible different lead) to take firewire power as well
ecsw is offline   Reply With Quote
Old 05-12-2010, 05:20 PM   #7
Wunder? Wonder?? Wander???
 
Join Date: Nov 2004
Location: Richmond
Posts: 228
Thanked 0 Times in 0 Posts
Failed 0 Times in 0 Posts
im was trying to figure out how to power a 120mm 12 volt fan it works at 5 volts but its to slow so im trying to figure out how to get more volts for the fan.

trying to do this with out plugging it into the wall, but it doesnt look like itll be possible
homey_v is offline   Reply With Quote
Old 05-12-2010, 08:32 PM   #8
To me, there is the Internet and there is RS
 
underscore's Avatar
 
Join Date: Apr 2007
Location: Okanagan
Posts: 17,259
Thanked 10,051 Times in 4,377 Posts
Failed 435 Times in 233 Posts
is this for a desktop PC? plug it into the 12V supply
__________________
1991 Toyota Celica GTFour RC // 2007 Toyota Rav4 V6 // 2000 Jeep Grand Cherokee
1992 Toyota Celica GT-S ["sold"] \\ 2007 Jeep Grand Cherokee CRD [sold] \\ 2000 Jeep Cherokee [sold] \\ 1997 Honda Prelude [sold] \\ 1992 Jeep YJ [sold/crashed] \\ 1987 Mazda RX-7 [sold] \\ 1987 Toyota Celica GT-S [crushed]
Quote:
Originally Posted by maksimizer View Post
half those dudes are hotter than ,my GF.
Quote:
Originally Posted by RevYouUp View Post
reading this thread is like waiting for goku to charge up a spirit bomb in dragon ball z
Quote:
Originally Posted by Good_KarMa View Post
OH thank god. I thought u had sex with my wife. :cry:
underscore is online now   Reply With Quote
Old 05-12-2010, 11:53 PM   #9
Rs has made me the man i am today!
 
ecsw's Avatar
 
Join Date: Nov 2002
Location: Langley
Posts: 3,257
Thanked 17 Times in 16 Posts
Failed 1 Time in 1 Post
take the power from power plug.

4 wires powers for the old style ide has 4 wires. 2 ground, 1 x 12v. 1 x 5v.
i will tell u exact wire tomorrow if i remember.
Posted via RS Mobile
ecsw is offline   Reply With Quote
Old 05-13-2010, 01:18 AM   #10
Wunder? Wonder?? Wander???
 
Join Date: Nov 2004
Location: Richmond
Posts: 228
Thanked 0 Times in 0 Posts
Failed 0 Times in 0 Posts
nop for laptop. wanna make it portable but doubt thats possible, unless i find a 5 volt fan thats 120 mm i could go for a smaller fan though.
homey_v is offline   Reply With Quote
Old 05-13-2010, 08:08 AM   #11
Willing to sell body for a few minutes on RS
 
Great68's Avatar
 
Join Date: Mar 2002
Location: Victoria
Posts: 10,721
Thanked 5,249 Times in 1,935 Posts
Failed 185 Times in 100 Posts
Quote:
Originally Posted by homey_v View Post
unless i find a 5 volt fan
Pretty much your only option.
__________________
1968 Mustang Coupe
2008.5 Mazdaspeed 3
1997 GMC Sonoma ZR2
2014 F150 5.0L XTR 4x4

A vehicle for all occasions
Great68 is offline   Reply With Quote
Old 05-13-2010, 08:34 AM   #12
Rs has made me the man i am today!
 
ecsw's Avatar
 
Join Date: Nov 2002
Location: Langley
Posts: 3,257
Thanked 17 Times in 16 Posts
Failed 1 Time in 1 Post
Quote:
Originally Posted by homey_v View Post
nop for laptop. wanna make it portable but doubt thats possible, unless i find a 5 volt fan thats 120 mm i could go for a smaller fan though.
oic
http://www.dealextreme.com/details.dx/sku.9184
ecsw is offline   Reply With Quote
Old 05-13-2010, 08:51 AM   #13
Wunder? Wonder?? Wander???
 
Join Date: Nov 2004
Location: Richmond
Posts: 228
Thanked 0 Times in 0 Posts
Failed 0 Times in 0 Posts
was told that thing sucks.

and pretty loud?


i got this and its not bad...if you place your laptop right on it perfectly or else it rattles like nuts

http://www.dealextreme.com/details.dx/sku.13227

ive made myself a slanted base already..just gotta find a fan to make it work good.

you guys recommend any quiet 5 volt fans? the biggest 5 volts i found were 80mm
homey_v is offline   Reply With Quote
Old 05-13-2010, 09:49 AM   #14
Rs has made me the man i am today!
 
ecsw's Avatar
 
Join Date: Nov 2002
Location: Langley
Posts: 3,257
Thanked 17 Times in 16 Posts
Failed 1 Time in 1 Post
^ it's just an example.

There are many laptop cooling pads available on the market. look around I guess.
if you want to wire your 12v fan from usb, it's also possible to use 2 usb to make it 10V. but u need to modify the wire. however, if u r not even sure about the usb combine cable makes 5V 1A, then I wouldn't show you how.

get a usb fan would be easier.
ecsw is offline   Reply With Quote
Old 05-13-2010, 11:54 AM   #15
RS controls my life!
 
Join Date: May 2005
Location: Canada
Posts: 743
Thanked 20 Times in 14 Posts
Failed 7 Times in 1 Post
no, it is not possible to use 2 usb to make 10V by modifying just the wire. you will just short your USB ports.
Bath Tussue is offline   Reply With Quote
Old 05-13-2010, 12:31 PM   #16
Rs has made me the man i am today!
 
ecsw's Avatar
 
Join Date: Nov 2002
Location: Langley
Posts: 3,257
Thanked 17 Times in 16 Posts
Failed 1 Time in 1 Post
Quote:
Originally Posted by Bath Tussue View Post
no, it is not possible to use 2 usb to make 10V by modifying just the wire. you will just short your USB ports.
yes you can, but at the end it will not be any usb connector to use, simply 2 wires with 1 positive and 1 negative.

like I say, if op can't even understand 2 x 5V 500ma in combination to 1A, I won't even tell you how to make 10V 500ma from serial 2 x 5v dc power to 10v dc.
ecsw is offline   Reply With Quote
Old 05-13-2010, 01:12 PM   #17
NEWBIE ACCOUNT!
 
Join Date: Mar 2004
Location: Vancouver
Posts: 11
Thanked 0 Times in 0 Posts
Failed 1 Time in 1 Post
to: ecsw
Your claim is not possible. Care to respond?
Zapper is offline   Reply With Quote
Old 05-13-2010, 01:15 PM   #18
ddr
Snapping away
 
ddr's Avatar
 
Join Date: Oct 2005
Location: Richmond
Posts: 1,920
Thanked 97 Times in 84 Posts
Failed 2 Times in 2 Posts
portability aside, get the zalman cooling pad. best laptop cooling pad ever. solid and quiet. google reviews.
__________________
flickr
ddr is offline   Reply With Quote
Old 05-13-2010, 01:23 PM   #19
Willing to sell body for a few minutes on RS
 
Great68's Avatar
 
Join Date: Mar 2002
Location: Victoria
Posts: 10,721
Thanked 5,249 Times in 1,935 Posts
Failed 185 Times in 100 Posts
Quote:
Originally Posted by ecsw View Post
yes you can, but at the end it will not be any usb connector to use, simply 2 wires with 1 positive and 1 negative.

like I say, if op can't even understand 2 x 5V 500ma in combination to 1A, I won't even tell you how to make 10V 500ma from serial 2 x 5v dc power to 10v dc.
It's not possible. To get 10V you need two SEPARATE 5V power sources in series. In a computer, ONE single 5V power source supplies power to all the USB ports.
__________________
1968 Mustang Coupe
2008.5 Mazdaspeed 3
1997 GMC Sonoma ZR2
2014 F150 5.0L XTR 4x4

A vehicle for all occasions
Great68 is offline   Reply With Quote
Old 05-13-2010, 01:32 PM   #20
Rs has made me the man i am today!
 
ecsw's Avatar
 
Join Date: Nov 2002
Location: Langley
Posts: 3,257
Thanked 17 Times in 16 Posts
Failed 1 Time in 1 Post
Quote:
Originally Posted by Zapper View Post
to: ecsw
Your claim is not possible. Care to respond?
it's possible. but I made a mistake on the amp.

you will lose the amp by 1/2. Therefore, 2 x 5v 500ma can make 1 x 10v dc with 250ma.

possible or not, only trying to help. it makes no sense to do it either as there are many fan available on the market.

why does ppl here always want to pick on me?

I created posts in other forums to help other ppl with many DIY projects. Some electronical and some mechanical, but mostly got respected. the only place I never get a "thank you" and have people doubted what I say is in here.

Fine, it's not possible. does that make you happy?
ecsw is offline   Reply With Quote
Old 05-13-2010, 01:45 PM   #21
Rs has made me the man i am today!
 
ecsw's Avatar
 
Join Date: Nov 2002
Location: Langley
Posts: 3,257
Thanked 17 Times in 16 Posts
Failed 1 Time in 1 Post
Quote:
Originally Posted by Great68 View Post
It's not possible. To get 10V you need two SEPARATE 5V power sources in series. In a computer, ONE single 5V power source supplies power to all the USB ports.
ok, that's also right. I forgot about this part....
ecsw is offline   Reply With Quote
Old 05-13-2010, 07:16 PM   #22
Rs has made me the woman i am today!
 
JesseBlue's Avatar
 
Join Date: Oct 2001
Location: Here! n There!
Posts: 4,149
Thanked 498 Times in 222 Posts
Failed 121 Times in 59 Posts
not possible...they all have a common 'ground' you need a fair bit of modifying to get 10V from USB...get it from the firewire port....they should be rated from 8-32 V...but you will need to limit the voltage on the fan side...boom...hehe...
get a desktop fan for 10bucks and call it a day
__________________
Go Canucks Go!
JesseBlue is offline   Reply With Quote
Old 05-13-2010, 08:36 PM   #23
Wunder? Wonder?? Wander???
 
Join Date: Nov 2004
Location: Richmond
Posts: 228
Thanked 0 Times in 0 Posts
Failed 0 Times in 0 Posts
lmao ahhh thanks everyone..my brother kept arguing with me that 5+5 does make 10 and i kept saying now


well right now the fan works..but not the way id like it too...

im currently using a 9volt battery...thats being charged constantly by the usb port...which is powering the fan. and yup im afraid of the battery blowing up. lmao

so im tryng to figure out a way..to get rid of the battery...and my dad wont help me cause he says its common sense and that i should already know >.<


and ya look at a lot of laptop coolers but none that are really to my liking. id like to control the fan speed, be portable, and and and DIY =p
but most importantly variable fan speed =D

this is my first laptop and ive never needed to use the usb to power anything >.<.


LMAO for fun...few years ago...i made a case with 15 80mm fans, 3 sets so i can turn them if i dont have my headset on cause it was bloody loud LMAO but that was easy...since there was 12 volt plugs everywhere >.<



firewire port....ive got one.... 8-32...ill check that out. ty ty ty ty ty


and no i will not give in and buy a 10 dollar fan lol even if making this costs me 50 dollar. this has become a "my dad says i cant do it, so i must do it" kind of project lol
homey_v is offline   Reply With Quote
Old 05-14-2010, 04:30 PM   #24
Rs has made me the woman i am today!
 
JesseBlue's Avatar
 
Join Date: Oct 2001
Location: Here! n There!
Posts: 4,149
Thanked 498 Times in 222 Posts
Failed 121 Times in 59 Posts
how about a dollar store fan that uses 2 AA...just to make it even cheaper...
__________________
Go Canucks Go!
JesseBlue is offline   Reply With Quote
Old 05-14-2010, 09:44 PM   #25
dmm
Proud to be called a RS Regular!
 
dmm's Avatar
 
Join Date: Nov 2002
Location: Vancouver
Posts: 120
Thanked 15 Times in 9 Posts
Failed 0 Times in 0 Posts
ahhh ... now we know what you want to achieve, and $$$ is almost no object (at least to prove your Dad wrong!).

Not 100% sure if there is a commercial product you can buy off the shelf but there are devices that will boost the voltage.

There are DC-DC converters that will "boost or step-up" the voltage, and circuts that use boost converter IC's (http://www.eleccircuit.com/lm2577-5v...age-regulator/). This one is an all in one package http://www.murata-ps.com/data/power/...0wa-series.pdf but will probably run you about $100 but you still need to add the wires.
dmm is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -8. The time now is 08:39 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
SEO by vBSEO ©2011, Crawlability, Inc.
Revscene.net cannot be held accountable for the actions of its members nor does the opinions of the members represent that of Revscene.net