Remember: every ATX supply is subtly different. No single PDF fits all. Use multiple references, understand the feedback theory, and always respect the lethal voltages inside.
[ Voltage Reference ] --> [ Voltage Regulator ] Convert Atx Power Supply To Variable Benchtop Pdf
Always unplug and discharge before soldering or touching any component on the primary side. Remember: every ATX supply is subtly different
This gives approx 1.25V to 10V at up to 1.5A. understand the feedback theory