Calling all hardware tech - Need help
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john_the_ultimate
No pain....No gain
Typical (but not always) color codes for PC power supplies:
Red: +5
Yellow: +12
Black: Gnd (Probably case as well)
White: -5
Blue: -12
Orange: Power_good (output).
(Some newer supplies may have a +3.3 output as well which may be green).
Red: +5
Yellow: +12
Black: Gnd (Probably case as well)
White: -5
Blue: -12
Orange: Power_good (output).
(Some newer supplies may have a +3.3 output as well which may be green).
john_the_ultimate said:
He is asking the power output voltages from the various ports of the system.
As far as I know
USB 2.0 ------ gives you a output voltage of 5 volts.
Printer Port ---- (LPT1) or parallel port --- gives you a output voltage of 5 volts (but you will need to know which wires or pin are negative and positive)
Com Port ---- here also you can get upto 12v output (but you will need to code some source code into C or C++ to achive it)
I would suggest you to study more on the topic before you start experimenting with various ports of your computer.
To start with you can visit this sites:
www.roboticsindia.com
you can search for similar topics in google.com
OP
Champ
.NET Guru
john_the_ultimate said:
very very thanks john can u help a bit more by explaning that where i can find these wires
for example the power cort which we connect to hdd (ide not sata) have 4 pins
can u give details pin wise
also there is another small power cord which we connect to FDD can u give details for that also
again thanks for ur help
john_the_ultimate
No pain....No gain
When u buy the SMPS the wires coming out of the case is color coded. For example:
1) HDD power connector has four wires:
a) one yellow wire -> this would be +12
b) two black wire -> this would be GND
c) one red wire-> this would be +5
2) FDD power connector has four wires:
a) one yellow wire -> +12
b) two black wire -> GND
c) one red wire -> +5
3) 4 pin power plug for motherboard has four wires:
a) two yellow wires -> +12
b) two black wires -> GND
4) Typical 20-pin motherboard connector has 22 wires:
a) three orange wires -> power good/+3.3
b) seven black wires -> GND
c) one yellow wire -> +12
d) four red wire -> +5
e) one blue wire -> -12
f) one white wire -> -5
g) one grey wire -> power ok
h) one brown wire -> startup/sense( tied to +3.3)
i) one purple wire -> +5 standby
j) one green wire -> power on/+3.3
k) one pink wire -> startup/ sense (tied to +3.3)
Simply u can see which wire is connecting to which pin and know its supply.
But before making any connecting do check the output of each wire. These are standard color code but may vary (u know different company, different color codes).
1) HDD power connector has four wires:
a) one yellow wire -> this would be +12
b) two black wire -> this would be GND
c) one red wire-> this would be +5
2) FDD power connector has four wires:
a) one yellow wire -> +12
b) two black wire -> GND
c) one red wire -> +5
3) 4 pin power plug for motherboard has four wires:
a) two yellow wires -> +12
b) two black wires -> GND
4) Typical 20-pin motherboard connector has 22 wires:
a) three orange wires -> power good/+3.3
b) seven black wires -> GND
c) one yellow wire -> +12
d) four red wire -> +5
e) one blue wire -> -12
f) one white wire -> -5
g) one grey wire -> power ok
h) one brown wire -> startup/sense( tied to +3.3)
i) one purple wire -> +5 standby
j) one green wire -> power on/+3.3
k) one pink wire -> startup/ sense (tied to +3.3)
Simply u can see which wire is connecting to which pin and know its supply.
But before making any connecting do check the output of each wire. These are standard color code but may vary (u know different company, different color codes).
john_the_ultimate
No pain....No gain
You are welcome.
All that is nice and good Mr. John. Now how about you start posting sources for all your rips and stop claiming them as your work? Let this be your friendly warning. If in the future I find you ripping material without crediting the original source, you will earn a shiny, new Warning badge.
One such link:
*www.repairfaq.org/REPAIR/F_smpsfaq.html
One such link:
*www.repairfaq.org/REPAIR/F_smpsfaq.html
Keith Sebastian
Padawan
You can also get +7V by using RED and YELLOW. i.e. by treating RED as ground when making connections.
I do this all the time with my case fans as 7V gives the right amount of airflow with very little noise as opposed to 5V which is too slow, and 12V which makes the fan noisy. Try it.
-Keith
I do this all the time with my case fans as 7V gives the right amount of airflow with very little noise as opposed to 5V which is too slow, and 12V which makes the fan noisy. Try it.
-Keith
john_the_ultimate
No pain....No gain
Nemesis said:
If I know the color codes already then why should I start posting source links, which I haven't used. I have done Hardware Course from a reputed institute in Kolkata. That doesn't mean that I know everything, but I do have some information about the subject. So do you think that everything thats posted does require a source and one cannot have prior knowledge about the particular subject. If I had used, I would certainly put in the source links and if by chance my post seems similar to any known or unknown contents of a website I can't help it. Man, I also know the rules of this forum and you being the mods doesn't means that only u know the rules.
But as we being a part of of this forum, I certainly appreciate ur alertness and sorry if I troubled u but in future remember do discuss the situation with the person before posting such warnings.
I would not have bothered about telling you to credit the original source if I hadn't found an exact match on the website I posted:
Now I don't think it's sheer coincidence that some website, easily found on Google, will say it exactly as you did. I do not want to doubt your capabilities nor am I saying that you shouldn't post material frm other sites. No harm done as long as you have the courtesy to credit the original source.
6.17) PC power supply information (pinouts, testing and non-standard uses)
When testing or operating a common PC (computer) power supply without
being connected to its mainboard and peripherals, a substitute load
must be provided. This would be the case if you wanted to determine
whether a supply was good or wanted to use the supply for other purposes.
To test the supply, you want to:
* Remove all of the (expensive) stuff - mainboard, drives, etc. Unplug
all of the power supply connectors.
* Provide a dummy load to +5 and +12 outputs.
* Typical (but not always) color codes for PC power supplies:
Red: +5, Yellow: +12, Black: Gnd (Probably case as well).
White: -5, Blue: -12, Orange: Power_good (output).
(Some newer supplies may have a +3.3 output as well which may be green).
* PC power supplies (as well as most other switchers) need a minimum load
on +5 and possibly on +12 as well. An amp (e.g., 5 ohms on +5) should be
enough.
I use an old dual beam auto headlight. It adds a touch of class as well
to an otherwise totally boring setup.You can also use auto tail light
bulbs or suitable power resistors or old disk drives you don't really care
about (you know, those boat anchors).
* There are no sense lines. There is a 'Power_Good' line which is an output
from the power supply to the mainboard and can be ignored unless you want to
connect it to an indicator to let you know all the outputs are within specs
(it may need a pullup and I don't know its drive capability).
* Pinout for the standard PC and clone connector (some companies like Compaq
do NOT use this type of connector, however.). Black (Gnd) wires together
for the P8 and P9 connectors when installed to mainboard.
J8: Pin 1 = Power_Good J9: Pin 1 = Gnd
Pin 2 = +5 Pin 2 = Gnd
Pin 3 = +12 Pin 3 = -5
Pin 4 = -12 Pin 4 = +5
Pin 5 = Gnd Pin 5 = +5
Pin 6 = Gnd Pin 6 = +5
Note: for an XT only, J8-Pin 1 is Gnd, J8-Pin 2 is no connect.
* The peripheral connectors are: Pin 1: +12, Pin 2 and 3: Gnd, Pin 4 = +5.
Now I don't think it's sheer coincidence that some website, easily found on Google, will say it exactly as you did. I do not want to doubt your capabilities nor am I saying that you shouldn't post material frm other sites. No harm done as long as you have the courtesy to credit the original source.
john_the_ultimate
No pain....No gain
Thank you Nemesis for showing ur side of doubt, but its strange. I do appreciate others effort and would always be the first to credit them. But I have these notes in my notebook from my classes (hardware course) which are exact match. Maybe our faculty took the contents from this site and gave it to us. Anyways thanks.
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