Sunday, August 19, 2007

Desktop Power Supply from a PC


By Andy.Batts@MurrayState.Edu
This ATX PS board has leads for +5 (RED), -5 (WHITE), +12 (YELLOW), -12 (BLUE) volts, Ground (BLACK) and switch (GREEN). Dell power supplies manufactured between 1996 and 2000 do not follow the industry standard pinout and color codes. The fan has also been unplugged for better viewing. Since this PS was converted for use in the logic and robotics labs, the selected voltages were tapped. Other users may want combinations of +3.3 V (ORANGE), +5 V and/or +12 V if they are converting one of the newer supplies. For R/C applications, the 5 volt output can also serve as a desktop source to drive receivers and servos. If used as a power source for the micro and sub-micro servos, you must be careful not to drive the servo to either endpoint to avoid stripping the smaller gears in these units. Most standard servos have sufficiently robust gear trains and will simply stall if pushed to the mechanical stops. More...

See Also...
  • How PC Power Supplies Work at Howstuffworks - Link.
  • PC power supply conversion and Power supply From Silent Q - Link.
  • About ATX Power Supply From My Electronics Hobby - Link.
  • ATX and ATX P4 Power Supplies @ bluemax.net - Link

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