Abstract: A regulated plasma display power supply includes sequencing circuitry for triggering the high voltage power supply output only after other computer operational voltages are properly functioning. The power supply output is disabled if any of those operational voltages fail. A power supply short circuit protection scheme is included to prevent high power dissipation in the power transistor and possible damage to the regulator. Over-shoot protection is provided at the power supply input to protect the power supply components from over voltage spikes.