voltage upping?

Enclosures, modding, blowholes, and the power needed to run it all.

Moderators: Nemesis, SpotTheCat

voltage upping?

Postposted on Wed Mar 26, 2003 10:31 pm

is there an easy/safe way to increase voltage on a line? so I could put MORE voltage through a fan?
SpotTheCat
Gerbilus Supremus
 
Posts: 12262
Joined: Wed Jan 29, 2003 12:47 am
Location: a regular hole

Postposted on Fri Mar 28, 2003 12:51 pm

Since there is a method for getting 5V, it sounds like, with two molex connectors you could get 17V by adding 12 to 5. The fan will probably take it, I have run fans on 18 V and I think most fans that are 12V will function at 17V ok. I don't know, though, if that would do any damage to the power supply. Maybe one of the electrical engineers here can comment on that.
PC 1-- P4 2.8GHz, ASUS P4G800-V, 1.5 G 3200 3
50w psu, WD 120 gig HD, ATI 9600SE, XP Home w/SP2
****************
PC2-- XP 2100B (at 2.1 GHz, 175 MHz FSB) Epox 8RDA, 512 MB Corsair Value PC 3200, WD 40 G, Lite-on CDRW
JimiH
Gerbil First Class
 
Posts: 181
Joined: Wed Dec 04, 2002 8:50 pm
Location: Ohio

Postposted on Wed Apr 02, 2003 5:46 pm

JimiH wrote:Since there is a method for getting 5V, it sounds like, with two molex connectors you could get 17V by adding 12 to 5. The fan will probably take it, I have run fans on 18 V and I think most fans that are 12V will function at 17V ok. I don't know, though, if that would do any damage to the power supply. Maybe one of the electrical engineers here can comment on that.
no, I have a few industrial aluminum ones that range from 12-35 volts

I want to up it a bit, as it spins very slowly at 12
SpotTheCat
Gerbilus Supremus
 
Posts: 12262
Joined: Wed Jan 29, 2003 12:47 am
Location: a regular hole

Postposted on Thu Apr 03, 2003 1:04 am

JimiH wrote:Since there is a method for getting 5V, it sounds like, with two molex connectors you could get 17V by adding 12 to 5. The fan will probably take it, I have run fans on 18 V and I think most fans that are 12V will function at 17V ok. I don't know, though, if that would do any damage to the power supply. Maybe one of the electrical engineers here can comment on that.


The difference between the two rails is what you'd get. You'd need -12 and 5 or 12 and -5 to get 17V.
<a href=http://www.gentoo.org>Gentoo GNU/Linux</a>
yarbo
Gerbil Elite
 
Posts: 687
Joined: Thu Jun 13, 2002 11:16 pm
Location: Southern California

Postposted on Fri Apr 04, 2003 8:36 pm

yarbo wrote:
JimiH wrote:Since there is a method for getting 5V, it sounds like, with two molex connectors you could get 17V by adding 12 to 5. The fan will probably take it, I have run fans on 18 V and I think most fans that are 12V will function at 17V ok. I don't know, though, if that would do any damage to the power supply. Maybe one of the electrical engineers here can comment on that.


The difference between the two rails is what you'd get. You'd need -12 and 5 or 12 and -5 to get 17V.
there is no -12 or -5 outside of the ATX connector.
I was thinking like this:

+12 volt, connected to ground of external 5 volt source, hot side of battery connected to + fan, ground of fan hooked up to PS ground.
SpotTheCat
Gerbilus Supremus
 
Posts: 12262
Joined: Wed Jan 29, 2003 12:47 am
Location: a regular hole


Return to Cases and Power Supplies

Who is online

Users browsing this forum: No registered users and 3 guests