Abstract: A driving method during the reset period of a plasma display, which includes a display panel with a plurality of display units for sealing the inert gas. Each display unit forms an equivalent capacitor and includes a first electrode, a second electrode, and a driving circuit that exerts voltage pulses to the display units to form wall charges on the surfaces of the two electrodes or to reduce the wall charges that have been formed. The method involves applying a first soft erase pulse on the first electrodes of the plurality of display units to reduce the wall charges of the plurality of the display units followed by applying a soft priming pulse on the second electrodes of the plurality of display units to re-generate the wall charges of the plurality of display units.

Abstract: A plasma display panel has a high open ratio. In the plasma display panel, the ribs are perpendicular to the address electrodes. In addition, a plurality of gaps or indentations are disposed on the transparent electrodes for reducing the influence of crosstalk. Further, by changing the number of address electrodes in the plasma display panel, the driving method can be simplified and the cost of the plasma display panel can be reduced. According to the invention, the plasma display panel can achieve a high open ratio, resulting in an improvement of the brightness.

Abstract: An electric heater includes a receiving chamber, heat sink members, electric heating pipes and a control portion. The receiving chamber and heat sink members are formed from extruded aluminum members. The heat sink members are sequentially arranged at both sides of the receiving chamber. The electric heating pipes are placed in the receiving chamber. The control unit activates an electric power source of the electric heating pipes in order to generate heat. Heat energy from the electric heating pipes is absorbed by extruded aluminum plates that define the receiving chamber. Heat energy is conducted quickly to the heat sink members which exchanges heat by convection with ambient cool air to rapidly raise the temperature of a room.

Abstract: A pair of complementary magnetic actuators controls a stage in a high-precision positioning instrument in a single coordinate direction. Additional pairs of complementary magnetic actuators can be used to provide control of the stage in other coordinate directions. A small current through the windings of both magnetic actuators provides a zero net force on the fine stage, thus maintaining the position of the fine stage. The small current used to control the fine stage minimizes the RMS power gain. By increasing the current in one magnetic actuator while decreasing the current in the other, a net force is generated for large accelerations of the stage. Control of the magnetic actuators is simplified by simultaneously increasing and decreasing the current through the windings of the complementary magnetic actuators prior to accelerating the stage. Additionally, a feedforward command can control the magnetic actuators to decrease the settling time of the system.

Abstract: A fine stage control system for use for instance in a semiconductor lithography machine, uses a pair of opposing (push-pull) E/I core actuators to move the stage with high precision along an axis. The paired actuators are coupled together mathematically in terms of their control characteristics and controlled as a single entity, thereby providing a more efficient control scheme and improved system performance.