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Author Topic: 5v+7v  (Read 2068 times)

castor jay

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5v+7v
« on: September 24, 2003, 03:30:14 PM »

if i solder the 5v and the 7v wires together, the end result will be 12v right. yes i know 5+ 7+ is 12 thats not the question, i just want to know if it will do that or will it just supply the highest one, that being 7


---7v----\
----G----| ____12V
----G----|
---5v----/
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Skylined

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5v+7v
« Reply #1 on: September 24, 2003, 04:19:36 PM »

Are you talking about a PSU?
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MaxamusCrasious

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5v+7v
« Reply #2 on: September 24, 2003, 04:21:31 PM »

If i remember my previous exparaments right (i can't find my modding notebooK) you will only get 7 volts

viridius

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5v+7v
« Reply #3 on: September 24, 2003, 04:44:19 PM »

Since there is no 7 volt wire on the PSU (7 volts being the difference between 5 and 12 volts), you could be thinking of:
A: Soldering both the 5 and 12 volt wires to another wire, which means you will short out your PSU
or
B: Using the 12 volt wire that you have associated with the 5 volt common for a potential difference of 7 volts.  You will also short out your PSU like this.  Why don't you just use the 12 volt rail?
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Tramodeus

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5v+7v
« Reply #4 on: September 24, 2003, 05:46:11 PM »

yeah...don't cross power wires...unless you like sparks.

Tom
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AMD_Junk13

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5v+7v
« Reply #5 on: September 24, 2003, 09:09:56 PM »

There is no 7volt on a PSU.

Note that if you use the 12volt as the (+) and the 5volt as the (-) you get 7volts. This is used mostly for quieting a case fan. Plz forgive bad ASCI  :P

Molex--------------------------Fan
______
12v---.|Yellow ------------->To pos(+)
G------|Black
G------|Black
5v___.|Red----------------->To Neg(-)
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orion

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5v+7v
« Reply #6 on: September 24, 2003, 11:18:48 PM »

Quote from: AMD_Junk13
Plz forgive bad ASCI


I think you mean this:

Code: [Select]

Molex--------------------------Fan

12v---|Yellow ------------->To pos(+)
G-----|Black
G-----|Black
5v----|Red----------------->To Neg(-)


:)
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merlinicorpus

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Re: 5v+7v
« Reply #7 on: September 24, 2003, 11:27:52 PM »

Quote from: castor jay

---7v----\
----G----| ____12V
----G----|
---5v----/


Actually the standard molex looks like this:

---12v--\
----G----|
----G----|
---05v--/
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strongShock

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5v+7v
« Reply #8 on: September 24, 2003, 11:52:31 PM »

viridius is right. if you solder a 5VDC & 7VDC wire together, you won't get 12VDc. you won't even get 7VDC or 5VDc. you will get 0V and some smoke.

if you mean powering off of 7VDC with a 5V reference, like AMD_Junk13 is talking about, you'd get 2VDC.

in reality, you probably mean 12VDC power referenced from 5VDC. in this case, you'll get 7VDC.

good luck bro!
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