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    • 5. 发明申请
    • SYSTEMS AND METHODS FOR IMPEDANCE STABILIZATION
    • 用于阻抗稳定的系统和方法
    • WO2009005560A3
    • 2009-04-16
    • PCT/US2008005485
    • 2008-04-28
    • APPLE INCHOTELLING STEVEPABON GUSLYON BENJAMIN BLAND BRIAN
    • HOTELLING STEVEPABON GUSLYON BENJAMIN BLAND BRIAN
    • H02M7/06
    • H02M7/04G06F3/0416G06F3/044H02M7/06
    • An AC-to-DC adapter may be provided in order to increase the sensitivity of a touch-sensitive surface. Such an AC-to-DC adapter may include a rectifying circuit to rectify incoming AC signals. The rectifying circuit may take the form of a diode bridge network that includes four diode branches. Stabilization circuits may be provided in parallel with each diode branch in order to decrease the impedance of the diode bridge network during particular periods of operation. The stabilization circuits may be configured such that the impedance of the diode bridge network is substantially constant during all periods of operation. As a result, the impedance of the AC-to-DC adapter may be relatively constant during all periods of operation. In turn, the sensitivity of a touch-sensitive surface of a device being powered by such an AC-to-DC adapter may increase.
    • 可以提供AC-DC适配器以便增加触敏表面的灵敏度。 这种AC-DC适配器可以包括整流电路以对输入的AC信号进行整流。 整流电路可以采取包括四个二极管分支的二极管桥式网络的形式。 稳定电路可以与每个二极管分支并联提供,以便在特定的操作时间段期间降低二极管电桥网络的阻抗。 稳定电路可以被配置为使得二极管桥式网络的阻抗在所有操作时段期间基本恒定。 结果,AC-DC适配器的阻抗在所有操作期间可能相对恒定。 反过来,由这种AC-DC适配器供电的设备的触敏表面的灵敏度可能会增加。