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This paper proposes a new sustaining driver for AC gas discharge condition. However, in TERES circuit, -VS/2 is PDPs(Plasma Display Panels) with reduced sustain voltage by applied to Y electrode when +VS/2 is applied to X electrode half, which improves the performance of conventional circuits and +V,/2 is applied to Y electrode when -V,/2 is applied to X such as TERES(TEchnology of REciprocal Sustainer). In the electrode after passing the half of cycle. Therefore, gas TERES circuit, the sustain voltage is the half of general emitting light is occurred alternatively by applying +V, and sustaining driver, however, there is no energy recovery circuit. -V to PDP.In the proposed circuit, energy recovery circuit is added and S *. . . zero voltage switching or zero current switching is performed in aTERE circuit is asyfollo inglFig 1Bcu X circuit switching devices. Although the energy recovery circuit is and Y circuit are acted symmetrically, only Y circuit is added, the number of active switching elements is the same as explained as follows. that of the TERES circuit. The operations of the proposed In the circuit of Fig. 1, +VS/2 is applied to Y electrode of circuit are analyzed for each mode and its validity is verified by panel capacitance when Sy1 and Sy4 are turned on. Sy3 is turned the simulations and experimentation. on at the same time for charging auxiliary capacitor Cy, When Sy1, Sy3, and Sy4 are turned off and Sy2 and Sy5 are turned on in the next action region, -VS/2 is applied to Y electrode in panel I.

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