I'm modifying my xbox 360 by adding additional fans into the 360. The current stock fans (2 fans) run at 9v. but is rated for 12VDC. I'm going to add two more 12v. fans. I have found different 12v. sources on the motherboard.
My ideas are:
A. solder all 4 fans to the 12v. source for the DVD drive
B. solder all 4 fans to the power supply plug on the motherboard.
C. power by installing a open circuit jack for 2-conductor plugs and using a 12VDC/800mA adapter
The Xbox 360 power supply provides 203 watts, and 12v DC current at 16.5 amps, and 5v DC at 1 Amp.
Would the four fans combine take too much power away from the 360? Please let me know what might happen if I choose A or B. Thanks!
2007-09-13 05:39:26 · 4 answers · asked by Reinnie 2 in Science & Mathematics ➔ Engineering
P - Power.
V - Voltage.
I - Current.
P = VI
P = (12)(0∙13)
P = 1∙56 Watts.
If all four fans are soldered from the same power source, then the incoming current will divide between the four fans, and this will reduce the power to your fans. The power may be insufficient to run the fans.
(B). It's unclear what you are doing with option B. The incoming supply (voltage) to the computer will be to high for the fans and will burn them out. Be sure where the power is taken from is down to 12 volts.
You could try powering two fans each for each source.
2007-09-13 06:02:17 · answer #1 · answered by Sparks 6 · 0⤊ 1⤋
12V *0.13A * 4 fans is a little more than 6 Watts. Not much of an extra load on a 200W power supply. I would use the DVD power connector to get the 12V -- it is probably the most accessible.
Edit: The DVD 12V connection is designed to drive a 12V motor load of several Watts. Normal PC power supplies (even 200W ones) allow for multiple 12V motor connections in parallel. Using the DVD connection shouldn't pose any problems.
.
2007-09-13 12:50:26 · answer #2 · answered by tlbs101 7 · 0⤊ 0⤋
4 fans, at 0.13 amps each is 0.520 amps. A, or B could very well over load the power supply because the extra load was probably not planned for. While that 203 watts sounds like a lot of power, the designers most likely designed the supply for just that load, and no more. Wire your extra fans in parallel to each other, and use an external power source.
2007-09-13 12:51:43 · answer #3 · answered by Anonymous · 0⤊ 1⤋
P=IV
2007-09-13 12:52:12 · answer #4 · answered by Tom 3 · 0⤊ 0⤋