-
公开(公告)号：US4764714A
公开(公告)日：1988-08-16
申请号：US138733
申请日：1987-12-28
CPC分类号： H02P1/44
摘要： A circuit is provided for controlling energization of the start winding of an alternating current motor whose shaft is divided into a number of angular segments equal to the number of poles of the motor. A shaft pulse is generated each time one of the angular segments rotates past a predetermined point. A line pulse is generated for each half cycle of line voltage. The shaft pulses are multiplied by the denominator of a selected trip-out ratio while the line pulses are multiplied by the numerator of the trip-out ratio. The multiplied shaft and line pulses are provided to an up/down counter which counts the shaft pulses down and the line pulses up. During the counter overflow condition, the circuit connects the start winding to the line voltage source. During the counter underflow condition, the circuit disconnects the start winding from the line voltage source.
摘要翻译： 提供一种电路，用于控制交流电动机的起动绕组的通电，其轴被分成等于电动机的极数的多个角度段。 每当一个角度段旋转超过预定点时，产生轴脉冲。 线路电压的每个半周期产生线路脉冲。 轴脉冲乘以所选脱扣比的分母，而线脉冲乘以脱扣比的分子。 倍增的轴和线脉冲被提供给向上/向下计数器，其对轴脉冲进行计数，线路向上脉冲。 在计数器溢出状态下，电路将起动绕组连接到线路电压源。 在计数器下溢条件期间，电路将起动绕组与线路电压源断开。
-
2.发明授权Flexible eddy current surface measurement array for detecting near surface flaws in a conductive part 失效灵活的涡流表面测量阵列，用于检测导电部件中的近表面缺陷
公开(公告)号：US5389876A
公开(公告)日：1995-02-14
申请号：US696455
申请日：1991-05-06
申请人： Kristina H. V. Hedengren , Richard O. McCary , Robert P. Alley , Richard J. Charles , William P. Kornrumpf , John D. Young
发明人： Kristina H. V. Hedengren , Richard O. McCary , Robert P. Alley , Richard J. Charles , William P. Kornrumpf , John D. Young
CPC分类号： G01N27/902 , G01N27/904
摘要： An eddy current probe array is disclosed comprising a plurality of spatially correlated eddy current probe elements sufficiently disposed within a flexible interconnecting structure to collect a discrete plurality of spatially correlated eddy current measurements for nondestructive near surface flaw detection. A plurality of precisely fabricated, substantially identical elements being sufficiently distributed can accommodate inspecting an area of conductor covered by the active width of the array in a single uni-directional scan. The array structure can flexibly conform to accommodate inspection of large, irregular, curved conductive surfaces which cannot be inspected by conventional means.
摘要翻译： 公开了一种涡流探针阵列，其包括充分设置在柔性互连结构内的多个空间相关的涡流探针元件，以收集用于非破坏性近面探伤的离散的多个空间相关涡流测量。 多个精确制造的基本上相同的足够分布的元件可以容纳在单个单向扫描中检查由阵列的有效宽度覆盖的导体的区域。 阵列结构可以灵活地符合适应大型不规则弯曲导电表面的检查，这些传统表面不能用常规方法检查。
-
公开(公告)号：US4541288A
公开(公告)日：1985-09-17
申请号：US546228
申请日：1983-10-27
摘要： An operating circuit for use with a magnetoelastic force/pressure sensor provides for changing the current flow through at least one sensor coil at a frequency responsive to the magnitude of a force impingent upon the sensor. The sensor operating circuit operates in a manner to prevent the sensor magnetoelastic core from being driven deeply into saturation, thus providing an operating circuit with a reduced current drain. A number of embodiments, including clock-driven and self-clocking (toggling) circuit providing digital and/or analog outputs are described.
摘要翻译： 用于磁弹性力/压力传感器的操作电路提供以响应于碰撞在传感器上的力的大小的频率改变通过至少一个传感器线圈的电流。 传感器操作电路的工作方式是防止传感器磁致弹性芯深入饱和，从而提供具有减小的电流消耗的操作电路。 描述了包括提供数字和/或模拟输出的时钟驱动和自定时（切换）电路的多个实施例。
-
4.发明授权Control system, method of operating a heating apparatus and controlled heating apparatus 失效控制系统，加热装置的操作方法和受控加热装置
公开(公告)号：US5235159A
公开(公告)日：1993-08-10
申请号：US562712
申请日：1990-08-06
CPC分类号： F24C15/106 , G05D23/1909 , H01H57/00
摘要： A control system for regulating electrical power input to the resistive heating elements of an electric heating apparatus, including domestic cooking appliances, is provided which employs at least one piezoceramic relay device. The electrical power is applied with the piezoceramic relay device responsive to control signals and with the control circuitry being directly and ohmically connected to the power source. In one embodiment, the control system employs individual piezoceramic relay devices for power regulation to the individual heating elements while in different embodiments a single piezoceramic relay device regulates power input to a pair of the heating elements. A method of operating the controlled apparatus in such manner and an apparatus having such control system are also disclosed.
摘要翻译： 提供一种用于调节输入到包括家用烹饪器具的电加热设备的电阻加热元件的电力的控制系统，其采用至少一个压电陶瓷中继装置。 响应于控制信号并且控制电路直接和欧姆地连接到电源，电压与压电陶瓷继电器一起施加。 在一个实施例中，控制系统采用单独的压电陶瓷中继装置来对各个加热元件进行功率调节，而在不同实施例中，单个压电陶瓷继电器调节对一对加热元件的功率输入。 还公开了以这种方式操作受控装置的方法和具有这种控制系统的装置。
-
公开(公告)号：US4561314A
公开(公告)日：1985-12-31
申请号：US546227
申请日：1983-10-27
IPC分类号： G01L1/12
摘要： A force/flash pressure sensor utilizes a stack of annular rings of a magnetoelastic material. One major stack surface is supported at a plurality of points having substantially equal angular displacement therebetween. A member, moving along the axis of the ring stack responsive to an axial force, or pressure, to be measured, presses a different set of points against the opposite stack surface, to distort the ring stack and alter the magnetic flux density saturation magnitude thereof. The plurality of points in abutment with each of the opposite major stack surfaces is advantageously equal; a number of different configurations for applying force (pressure) along the axis of the ring stack are described.
摘要翻译： 力/闪光压力传感器利用磁弹性材料的一叠环形环。 一个主堆叠表面被支撑在多个点之间，其间具有基本相等的角位移。 响应于待测量的轴向力或压力沿着环堆叠的轴线移动的构件将不同的一组点压在相对的堆叠表面上，以使环堆叠变形并改变其磁通密度饱和度幅度 。 与每个相对的主堆叠表面邻接的多个点有利地相等; 描述了沿着环形堆叠的轴线施加力（压力）的许多不同构造。
-
公开(公告)号：US5355102A
公开(公告)日：1994-10-11
申请号：US869090
申请日：1992-04-14
CPC分类号： H01L23/642 , H01L24/24 , H01L24/82 , H03H7/38 , H01L2224/24227 , H01L2224/82039 , H01L2924/01006 , H01L2924/01013 , H01L2924/01014 , H01L2924/01015 , H01L2924/01027 , H01L2924/01029 , H01L2924/01033 , H01L2924/01039 , H01L2924/01074 , H01L2924/01078 , H01L2924/014 , H01L2924/07802 , H01L2924/10329 , H01L2924/12042 , H01L2924/14 , H01L2924/1423 , H01L2924/15153 , H01L2924/15165 , H01L2924/1517 , H01L2924/15787 , H01L2924/19042 , H01L2924/30107 , H01L2924/3011 , H01L2924/3025
摘要： Active components of a microwave system are interconnected on a substrate by a dielectric-overlay, high-density-interconnect structure in a manner which provides close impedance matching, minimizes impedance discontinuities and substantially increases the yield of good circuits.
摘要翻译： 微波系统的有源部件通过电介质覆盖层，高密度互连结构以基板的方式互相连接在一起，该结构提供了紧密的阻抗匹配，使阻抗不连续性最小化并显着提高了良好电路的产量。
-
7.发明授权Eddy current device for inspecting a component having a flexible support with a plural sensor array 失效用于检查具有多个传感器阵列的具有柔性支撑件的部件的涡流装置
公开(公告)号：US5315234A
公开(公告)日：1994-05-24
申请号：US862950
申请日：1992-04-03
申请人： George H. Sutton, Jr. , Francis H. Little , Kristina H. V. Hedengren , Richard J. Charles , William P. Kornrumpf , Donna C. Hurley
发明人： George H. Sutton, Jr. , Francis H. Little , Kristina H. V. Hedengren , Richard J. Charles , William P. Kornrumpf , Donna C. Hurley
CPC分类号： G01N27/902 , G01N27/904
摘要： An eddy current device for inspecting a component includes an eddy current array circuit having respective pluralities of drive and sense elements and having an active face for positioning on a surface of the component during the inspection operation. A backing is disposed on a face of the eddy current array circuit opposite to the active face for concentrating an electromagnetic flux from the eddy current array circuit into the component when each of the plurality of drive elements is being energized. A mechanical arrangement is provided for supporting and deploying the backing and the array circuit to substantially conform with the surface portion under inspection and to cause each of the pluralities of drive and sense elements to be maintained at their respective substantially constant distances from the inspection surface during scanning, preferably at a controlled rate of scan.
摘要翻译： 用于检查部件的涡流装置包括具有相应多个驱动和感测元件的涡流阵列电路，并且在检查操作期间具有用于定位在部件的表面上的主动面。 背衬设置在与有源面相对的涡流阵列电路的表面上，用于当多个驱动元件中的每一个被通电时，将来自涡流阵列电路的电磁通量集中到部件中。 提供了用于支撑和展开背衬和阵列电路以基本上与被检查的表面部分一致的机械装置，并且使多个驱动和感测元件中的每一个在检测表面期间保持在它们各自基本恒定的距离 优选以受控的扫描速率进行扫描。
-
8.再颁专利
公开(公告)号：USRE33691E
公开(公告)日：1991-09-17
申请号：US361843
申请日：1989-06-01
摘要： Improved piezoelectric ceramic switching devices are described along with their .[.method.]. .Iadd.methods .Iaddend.of fabrication. In addition to the devices themselves, novel electric circuits are described for the energization as well as the use of such devices as switching elements in electrical systems. Parts of both the energization circuits and/or utilization circuits employing the piezo ceramic switching device are physically mounted on and supported by non-polarized parts of the piezoelectric ceramic plate elements comprising the switching devices so that lightweight compact construction is achieved along with substantial reduction of stray inductance intercoupling.
-
9.再颁专利Method for initially polarizing and centering a piezoelectric ceramic switching device 失效压电陶瓷开关器件初始偏振和定心的方法
公开(公告)号：USRE33618E
公开(公告)日：1991-06-25
申请号：US360225
申请日：1989-06-01
摘要： Improved piezoelectric ceramic switching devices are described along with their .[.method.]. .Iadd.methods .Iaddend.of fabrication. In addition to the devices themselves, novel electric circuits are described for the energization as well as the use of such devices as switching elements in electrical systems. Parts of both the energization circuits and/or utilization circuits employing the piezo ceramic switching device are physically mounted on and supported by non-polarized parts of the piezoelectric ceramic plate elements comprising the switching devices so that lightweight compact construction is achieved along with substantial reduction of stray inductance intercoupling.
-
10.发明授权Advanced piezoeceramic power switching devices employing protective gastight enclosure and method of manufacture 失效先进的压电陶瓷功率开关器件采用保护气密性外壳和制造方法
公开(公告)号：US4714847A
公开(公告)日：1987-12-22
申请号：US685108
申请日：1984-12-21
CPC分类号： H01H57/00 , H01H11/00 , H01H2050/025 , Y10T29/42
摘要： This application describes a number of novel advanced piezoelectric ceramic power switching devices which are mounted within protective gastight enclosures that are either evacuated to a high degree of vacuum or filled with an inert gas protective atmosphere. The devices thus constructed are capable of operating over a range of load voltages extending from about 100 volts to 5000 volts or more with corresponding currents of from a few amperes to hundreds of amperes and wherein it is possible to provide a number of such structures in a single common protective gastight enclosure. For certain circuit applications the devices thus constructed have unpoled portions on which are mounted either passive circuit components such as resistors, capacitors and the like or active semiconductor devices all interconnected in circuit relationship with each other and the switching devices by using printed circuit or integrated circuit fabrication techniques. In these devices, stray circuit impedances whether capacitive, inductive or resistive in nature can be reduced to an absolute minimum by appropriated designs. Such complementary circuit components and active semiconductor devices can be, if desired, mounted within the common protective enclosures in close proximity to the piezoceramic switching devices to which they are connected, or alternatively may be mounted exteriorly of the protective enclosures.
摘要翻译： 该应用描述了许多新颖的先进的压电陶瓷功率开关装置，其安装在保护性气密性外壳内，其被抽空到高真空度或填充有惰性气体保护气氛。 如此构造的器件能够在从几百安培到几百安培的相应电流的范围内从大约100伏特延伸到5000伏或更大的负载电压的范围内操作，并且其中可以提供多个这样的结构 单一普通保护气密性外壳。 对于某些电路应用，如此构造的器件具有非绝缘部分，其上安装有诸如电阻器，电容器等的无源电路部件或全部以电路关系彼此互连的有源半导体器件，并且开关器件通过使用印刷电路或集成电路 制造技术。 在这些器件中，杂散电路阻抗本质上是电容性，电感性还是电阻性都可以通过专用设计降低到绝对最小值。 如果需要，这样的互补电路部件和有源半导体器件可以安装在普通的保护外壳内，靠近与它们连接的压电陶瓷开关器件，或者可选地安装在保护外壳的外部。
-
-
-
-
-
-
-
-
-
搜索结果
60 条记录 (耗时 0.029 秒)
