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    • 3. 发明申请
    • Measuring circuit and a method for determining a characteristic of the impedance of a complex impedance element for facilitating characterization of the impedance thereof
    • 测量电路和用于确定复阻抗元件的阻抗的特性以便于表征其阻抗的方法
    • US20060276982A1
    • 2006-12-07
    • US11492606
    • 2006-07-24
    • James CaffreyColm SlatteryAlbert O'Grady
    • James CaffreyColm SlatteryAlbert O'Grady
    • G01R27/00G01R25/00G06F19/00
    • G01R27/02
    • A single chip integrated circuit measuring circuit (1) for determining a characteristic of the impedance of an external complex impedance circuit (2) for facilitating characterization of the impedance of the complex impedance circuit (2) comprises a signal generating circuit (7) for generating a variable frequency stimulus signal for applying to the complex impedance circuit (2). A first receiving circuit (10) receives a response signal from the complex impedance circuit (2) in response to the stimulus signal and conditions the response signal. A first analog-to-digital converter (68) converts the conditioned response signal to a first digital output signal, which is read from the first analog-to-digital converter (68) through a first digital output port (14). The response signal from the complex impedance circuit (2) is a current signal, and a current to voltage converter circuit (64) converts the response signal to a voltage signal. A first RMS to DC level converting circuit (70) converts the AC voltage of the response signal to a DC voltage level, and a fourth multiplexer (67) selectively applies the voltage response signal or the DC voltage level signal to the first analog-to-digital converter (68), depending on whether it is desired that the first digital output signal should be indicative of the phase shift or amplitude change in the response signal relative to the stimulus signal. A second receiving circuit (20) receives the stimulus signal, and similarly converts the stimulus signal to a second digital output signal for facilitating comparison of the response signal with the stimulus signal.
    • 一种单芯片集成电路测量电路(1),用于确定外部复阻抗电路(2)的阻抗特性,以便于表征复阻抗电路(2)的阻抗,其特征在于包括一个信号发生电路(7) 用于施加到复阻抗电路(2)的可变频率刺激信号。 第一接收电路(10)响应于激励信号接收来自复阻抗电路(2)的响应信号并且对响应信号进行调节。 第一模数转换器(68)将经调节的响应信号转换成通过第一数字输出端口(14)从第一模数转换器(68)读取的第一数字输出信号。 来自复阻抗电路(2)的响应信号是电流信号,并且电流 - 电压转换器电路(64)将响应信号转换为电压信号。 第一RMS至DC电平转换电路(70)将响应信号的AC电压转换为DC电压电平,第四多路复用器(67)选择性地将电压响应信号或DC电压电平信号施加到第一模数转换器 数字转换器(68),这取决于第一数字输出信号是否应当指示响应信号相对于激励信号的相移或幅度变化。 第二接收电路(20)接收刺激信号,并且类似地将激励信号转换为第二数字输出信号,以便于响应信号与刺激信号的比较。
    • 4. 发明申请
    • Measuring circuit and a method for determining a characteristic of the impedance of a complex impedance element for facilitating characterization of the impedance thereof
    • 测量电路和用于确定复阻抗元件的阻抗的特性以便于表征其阻抗的方法
    • US20050060109A1
    • 2005-03-17
    • US10664349
    • 2003-09-17
    • James CaffreyColm SlatteryAlbert O'Grady
    • James CaffreyColm SlatteryAlbert O'Grady
    • G01R27/02G01R27/00
    • G01R27/02
    • A single chip integrated circuit measuring circuit (1) for determining a characteristic of the impedance of an external complex impedance circuit (2) for facilitating characterization of the impedance of the complex impedance circuit (2) comprises a signal generating circuit (7) for generating a variable frequency stimulus signal for applying to the complex impedance circuit (2). A first receiving circuit (10) receives a response signal from the complex impedance circuit (2) in response to the stimulus signal and conditions the response signal. A first analog-to-digital converter (68) converts the conditioned response signal to a first digital output signal, which is read from the first analog-to-digital converter (68) through a first digital output port (14). The response signal from the complex impedance circuit (2) is a current signal, and a current to voltage converter circuit (64) converts the response signal to a voltage signal. A first RMS to DC level converting circuit (70) converts the AC voltage of the response signal to a DC voltage level, and a fourth multiplexer (67) selectively applies the voltage response signal or the DC voltage level signal to the first analog-to-digital converter (68), depending on whether it is desired that the first digital output signal should be indicative of the phase shift or amplitude change in the response signal relative to the stimulus signal. A second receiving circuit (20) receives the stimulus signal, and similarly converts the stimulus signal to a second digital output signal for facilitating comparison of the response signal with the stimulus signal.
    • 一种单芯片集成电路测量电路(1),用于确定外部复阻抗电路(2)的阻抗特性,以便于表征复阻抗电路(2)的阻抗,其特征在于包括一个信号发生电路(7) 用于施加到复阻抗电路(2)的可变频率刺激信号。 第一接收电路(10)响应于激励信号接收来自复阻抗电路(2)的响应信号并且对响应信号进行调节。 第一模数转换器(68)将经调节的响应信号转换成通过第一数字输出端口(14)从第一模数转换器(68)读取的第一数字输出信号。 来自复阻抗电路(2)的响应信号是电流信号,并且电流 - 电压转换器电路(64)将响应信号转换为电压信号。 第一RMS至DC电平转换电路(70)将响应信号的AC电压转换为DC电压电平,第四多路复用器(67)选择性地将电压响应信号或DC电压电平信号施加到第一模数转换器 数字转换器(68),这取决于第一数字输出信号是否应当指示响应信号相对于激励信号的相移或幅度变化。 第二接收电路(20)接收刺激信号,并且类似地将激励信号转换为第二数字输出信号,以便于响应信号与刺激信号的比较。
    • 5. 发明授权
    • Junction box with over-current protection
    • 接线盒带过电流保护
    • US06249412B1
    • 2001-06-19
    • US09315641
    • 1999-05-20
    • James Caffrey
    • James Caffrey
    • H02H300
    • H01C7/13H01C1/14H01C13/02H02H9/026
    • A junction box includes an array of conductive polymer positive temperature coefficient (PTC) devices formed from a laminate of a layer of conductive polymer PTC material between first and second metal foil layers. The first foil layer is divided, by conventional masking and etching techniques, into an array of discrete positive electrodes, each of which defines a single PTC over-current protection device having a predetermined trip current. The second foil layer is maintained intact and is shared by the PTC devices in the array as a common ground electrode. Each discrete positive electrode is contacted by a conductive spring contact finger. Two or more contact fingers can be formed as parts of single contact element or otherwise connected together to connect two or more devices in parallel, thereby providing a higher trip current than is provided by a single device.
    • 接线盒包括由第一和第二金属箔层之间的导电聚合物PTC材料层的叠层形成的导电聚合物正温度系数(PTC)器件的阵列。 通过常规掩模和蚀刻技术将第一箔层划分成离散的正电极阵列,每个离子正电极限定具有预定跳闸电流的单个PTC过电流保护装置。 第二箔层保持完整,由阵列中的PTC器件共用作公共接地电极。 每个离散的正极通过导电弹簧接触指接触。 两个或更多个接触指可以形成为单个接触元件的部件或以其它方式连接在一起以并联连接两个或更多个器件,从而提供比单个器件提供的跳闸电流更高的跳闸电流。