Converting an ATX computer power supply to a 12 volt DC Power source

This entry is part of a series, 12 Volt Power supply» I built this to provide current for electrolytic etching of copper and brass, but it can be used to power electronic projects as well.  It is a simple procedure, for those with basic electrical skill and understanding of the safety practices needed for working with power supplies. WARNING: If you read this and don’t understand any part of it, you don’t have the base knowledge needed to attempt this project safely. WARNING:  unplug unit before attempting anything! WARNING:  power supplies can hold a charge of electricity! WARNING:  If you don’t know or don’t think electricity can kill you dead, DO NOT PROCEED! Necessary parts: 10 ohm 10 watt resistor SPST switch Electrical tape and or heat shrink tubing Optional parts: LEDs Resistors (for 20 to 25 ma 84 to 100 ohms ¼ watt should work fine) Now down to work. Remove ATX power supple unit from computer if not all ready separate, keeping wires as long as possible but remove the connectors.  The power supply has a number of checks or safeties that keep it from working at this point.  Next remove the access cover, but it is not …Read the Rest