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    • 1. 发明授权
    • Power regulator for a contactless credit card system
    • 用于非接触式信用卡系统的电源调节器
    • US4797541A
    • 1989-01-10
    • US851849
    • 1986-04-14
    • Robert L. BillingsMark A. BowersFrankie G. Meier
    • Robert L. BillingsMark A. BowersFrankie G. Meier
    • G06K19/07B42D15/10G05F1/10G06K7/00G06K17/00H02J17/00H02M3/28G06K7/08G06K19/06
    • G06K7/00G06K7/0008Y10S323/901
    • A power transfer arrangement provides regulated power transfer from a station to a contactless portable data card without the need for regulation circuitry on the card itself. The station includes a primary coil for magnetically coupling power to a secondary coil, located on the card, when the data card is brought into close association with the station. The arrangment includes a microprocessor, a power amplifier including the primary coil, a variable voltage source and apparatus for measuring current flow in the primary coil. When the portable data card is not in close association with the station, the microprocessor causes the variable voltage source to provide a sequence of stepped voltages. Quiescent current flow is measured at each step and stored in memory. When the portable data card is brought into close association with the station, the microprocessor causes the variable voltage source to provide a sequence of stepped voltages. Active current flow is measured at each step and stored in memory. Power delivered to the data card is calculated as the difference between active and quiescent currents--multiplied by the magnitude of the variable voltage source. The sequence of active current measurements continues until the calculated value of power delivered to the data card exceeds a predetermined threshold power, at which time the data card is receiving a precise, predetermined amount of power.
    • 电力传输装置提供从站到非接触式便携式数据卡的稳定的电力传输,而不需要卡上本身的调节电路。 当数据卡与电台紧密联系时,该电台包括一个初级线圈,用于将电源耦合到位于卡上的次级线圈。 该布置包括微处理器,包括初级线圈的功率放大器,可变电压源和用于测量初级线圈中的电流的装置。 当便携式数据卡不与站相关联时,微处理器使可变电压源提供一系列阶梯电压。 在每个步骤测量静态电流,并存储在存储器中。 当便携式数据卡与电台紧密联系时,微处理器使可变电压源提供一系列阶梯电压。 在每个步骤测量有功电流,并存储在存储器中。 传输到数据卡的功率计算为有功和静态电流之间的差值乘以可变电压源的幅度。 有效电流测量的顺序继续进行,直到输送到数据卡的功率的计算值超过预定阈值功率,此时数据卡正在接收精确的预定量的功率。
    • 3. 发明授权
    • Magnetic devices including amorphous alloys
    • 磁性器件包括非晶合金
    • US4187128A
    • 1980-02-05
    • US945914
    • 1978-09-26
    • Robert L. BillingsHo-Sou ChenErnst M. GyorgyRichard C. Sherwood
    • Robert L. BillingsHo-Sou ChenErnst M. GyorgyRichard C. Sherwood
    • C22C45/00H01F1/153H01F1/00
    • C22C45/008H01F1/153
    • The disclosed magnetic devices, including a magnetically coupled conducting path, incorporate amorphous, low magnetostriction alloys of the general formula (Co.sub.a Fe.sub.b T.sub.c).sub.i X.sub.j, the "metallic" constituents thereof being within the parenthetical expression. T, in the formulation, is selected from among Ni, Cr, Mn, V, Ti, Mo, W, Nb, Zr, Pd, Pt, Cu, Ag and Au, X being at least one "glass former" selected from among P, Si, B, C, As, Ge, Al, Ga, In, Sb, Bi and Sn. The "metallic" constituents comprise from 70-90 atomic percent of the alloy with cobalt being present in an amount of at least 70 atomic percent of the "metallic" constituents. The described material has been prepared by rapid cooling from the liquid, directly to the shape needed for fabrication of the device (e.g., tape to be wound to form an inductor core). When the amorphous material is heat treated for from 30 minutes to two hours at temperatures from 125 degrees Centigrade to 200 degrees Centigrade, it exhibits a temperature stabilized magnetic permeability. The fabrication of such devices as temperature stabilized inductors and transformers is contemplated.
    • 公开的包括磁耦合导电路径的磁性装置包括通式(CoaFebTc)iXj的无定形低磁致伸缩合金,其“金属”成分在括号表达式内。 所述配方中的T选自Ni,Cr,Mn,V,Ti,Mo,W,Nb,Zr,Pd,Pt,Cu,Ag和Au,X为至少一种选自 P,Si,B,C,As,Ge,Al,Ga,In,Sb,Bi和Sn。 “金属”成分占合金的70-90原子%,钴的含量以“金属”成分为至少70原子%。 所描述的材料已经通过从液体的快速冷却直接制造到器件的制造所需的形状(例如,待缠绕的带形成电感器芯)来制备。 当非晶材料在125摄氏度到200摄氏度的温度下热处理30分钟至2小时时,其表现出温度稳定的磁导率。 考虑了诸如温度稳定的电感器和变压器的这种装置的制造。