Patent ID: 7542020

Claim:
A power supply employable by a plasma display device having first and second electrodes, the power supply configured to generate and supply a plurality of voltages, the power supply comprising: a first power source configured to generate and supply first voltage; a transistor having a drain electrically coupled to the first power source; a first resistor having a first end coupled to the first power source and a second end electrically coupled to a gate of the transistor; a second resistor having a first end coupled to the second end of the first resistor and a second end electrically coupled to a second power source configured to supply a second voltage that is lower than the first voltage; and a capacitor having a first end coupled to a source of the transistor and a second end electrically coupled to the second power source, the coupling of the first end of the capacitor to the source of the transistor forming a third voltage supply node having the third voltage when the capacitor is charged, wherein the power supply is configured to alternately supply the first and second electrodes with the first and second voltages during a sustain period, and to bias the second electrodes with the third voltage during an address period.