ATX_Power_Supply

Completed ATX PSU using an ATX female connector to the extension box.

Circuit Diagram (Jpg file)

Circuit Diagram (Dia file)

ATX connector pinout

Lab Bench Power Supply Conversion Planning

Parts Listing

1) One ATX Style Power Supply

Model: HPC-250G2 Rev:A1-01
Ratings:

INPUT:
115 V, 6 Amps
230 V, 3 Amps

OUTPUT:
+ 5 V, 25 Amps
- 5 V, 0.5 Amps
+ 12 V, 10 Amps
- 12 V, 0.5 Amps
+ 3.3 V, 15 Amps
+ 5 V SB (Stand By), 1 Amp

2) Miscellaneous Parts List

One Startech 8" Power Extension Cable - ATX24POWEXT
One European Style terminal strip (12 position, dual row
One 10 Ohm Wirewound Resister, 10 Watt, 10% tolerance
One Project Enclosure - 6x4x2", black
One Barrier Strip, 6 position, dual row
One SPST Toggle Switch, rated 3 amp at 125 VAC
One LED Assembly, Red with built-in resistor
One LED Assembly, Green with built-in resistor
One 2-port usb fixture (salvaged from an old PC)
One 12 Volt car cig lighter power outlet
Two Banana Jack, Insulated Binding Posts (to use for 12 vdc)
One Banana Jack, Insulated Binding Posts (to use for -12 vdc, optional)
Four Banana Jack, Insulated Binding Posts (to use for 5 and 3.3 vdc)
Misc Crimp-On Terminals
Misc Wire Connectors
Misc Heat-Shrink Tubes, 1" assorted colors
One 330 Ohm resistor, 1/4 Watt (optional, needed if LED didn't come with one)
Misc 6-32 Round Head Machine Screws
Misc 6-32 Steel Machine Hex Nuts
Misc Steel Flat Washers
One Package 24" Test/Jumper Leads, Insulated Mini Alligator Clips (optional for your experiments)
Soldering Tools
3/4" PVC Electrical Tape
Multi-meter

Reference Bookmarks for information and ideas

ATX Connector Pinout

Convert a Computer ATX Power Supply to a Lab Power Supply - wikiHow
Use an Old ATX Power Supply As a Lab Power Supply Without Modification
Another variation on binding post arrangements

SparkFun Electronics - Search for ATX Connector Breakout Board

Wikipedia: ATX
Wikipedia: Switched Mode Power Supply

ATX_POWER_SUPPLY
Showing 1 - 10 of 10 pictures

2010-07-02-3.jpg Side with capacitors, 200 Volt, 470 microfarads		2010-07-02-4.jpg Side with chips, TL 494 CN and LM 339 N

2010-07-02-misc-parts.jpg Home from the store		2010-07-03-pre-assemble.jpg Exploded View for the 4th

2010-07-05-Spare-Parts.jpg Left over parts		2010-07-19-Completed.jpg Completed Build (larger ATX PSU)

2010-07-20-Completed-box.jpg Completed Build, Box insides (larger ATX PSU)		Circuit-Diagram.jpg The Big Picture

Connector_atx_pinout.jpg Connector Pin Outs		Connector_planning.jpg Circuit Diagram

Showing 1 - 10 of 10 pictures

ATX Bench Power Supply Conversion

Parts Listing

1) One ATX Style Power Supply

2) Miscellaneous Parts List

Reference Bookmarks for information and ideas