BUILD AN ELECTRONIC WORKBENCH POWER SUPPLY USING AN OLD PC POWER UNIT

  • Black : 0V
  • Orange : +3.3V
  • Red : +5V
  • Yellow : +12V
  • Blue : -12V (at low amperage)
  • Green : to the on switch, connected to Black (0 V) thru the switch
  • Grey : +5V when the power supply is on. Used to power the “On” indicator LED.
  • Purple : +5V when the power supply has power. Used to power the “Stand By” indicator LED.

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