When AC voltage is applied, CAPZero™ blocks current flow in the X capacitor safety discharge resistors, reducing the power loss to less than 5mW or essentially zero at 230VAC. When AC voltage is disconnected, CAPZero automatically discharges the X capacitor by connecting the series discharge resistors. This operation allows total flexibility in the choice of the X capacitor to optimize differential mode EMI filtering and reduce inductor costs, with no change in power consumption. The simplicity and ruggedness of the two terminal CAPZero IC makes it an ideal choice in systems designed to meet EuP Lot 6 requirements. Designing with CAPZero is simply a matter of selecting the appropriate CAPZero device and external resistor values for the X capacitor value being used. Applications includes all AC-DC converters with X capacitors <gt/>10nF, appliances requiring EuP Lot 6 compliance, adapters requiring ultra low no-load consumption and all converters requiring very low standby power.