-
公开(公告)号：US5175413A
公开(公告)日：1992-12-29
申请号：US560448
申请日：1990-07-31
摘要： A fail-safe control system for operating a power relay to energize an electrical load such as a resistive heating element in a cooking apparatus includes first and second driving transistors connected in series with the control winding of the power relay and a source of power. A logic circuit, such as a microcomputer, produces pulses having specified characteristics at a single output port in order to energize the control winding. A circuit interconnecting the output port of the logic circuit with the driving transistors includes a first branch connected with the first transistor and a second branch connected with the second transistor. The first branch of the circuit includes an operational amplifier connected by a capacitor with the logic circuit output port in a manner that the first branch will drive the first transistor for a sufficiently long period of time initially in order to energize the relay control winding and cause the power relay to pull in. Thereafter, the first branch will only drive the first transistor if presented with pulses of much shorter duration; however, the shorter-duration pulses are capable of holding in the power relay. The second branch includes an operational amplifier connected directly with the logic circuit output port to apply all pulses produced at the output port to the second driving transistor.
摘要翻译： 用于操作功率继电器以激励烹饪设备中的电阻加热元件的电负载的故障安全控制系统包括与功率继电器的控制绕组和电源串联连接的第一和第二驱动晶体管。 诸如微计算机的逻辑电路在单个输出端口处产生具有特定特性的脉冲，以使控制绕组通电。 将逻辑电路的输出端口与驱动晶体管互连的电路包括与第一晶体管连接的第一分支和与第二晶体管连接的第二分支。 电路的第一分支包括一个运算放大器，由电容器与逻辑电路输出端口连接，使得第一分支将首先驱动第一晶体管足够长的时间段，以便为继电器控制绕组通电并引起 电源继电器拉入。此后，如果呈现短得多的脉冲，第一分支将仅驱动第一晶体管; 然而，较短持续时间的脉冲能够保持在功率继电器中。 第二分支包括与逻辑电路输出端口直接连接的运算放大器，以将在输出端口处产生的所有脉冲施加到第二驱动晶体管。
-
公开(公告)号：US5138137A
公开(公告)日：1992-08-11
申请号：US634579
申请日：1990-12-27
IPC分类号： F24C7/08 , H01H13/702
CPC分类号： F24C7/082 , H01H13/702 , H01H2231/012 , H01H2239/002 , H01H2239/012
摘要： The present invention is a fault detecting membrane potentiometer keyswitch. The keyswitch includes circuitry for providing a reference voltage signal when not activated, so that a faulty switch can be determined by absence of a reference voltage signal. Specifically, the wiper of the membrane potentiometer keyswitch is coupled to the resistive element of the keyswitch intermediate a sensing portion and a reference portion. With this arrangement, as long as the keyswitch is inoperative, the reference portion provides a reference voltage signal which is distinguishable from any of the setting voltage signals, and also distinguishable from a grounded condition. When a setting signal is observed, a timer is used to determined whether the setting signal is a user entered setting signal or a short between the wiper and the resistive element.
摘要翻译： 本发明是故障检测膜电位器钥匙开关。 钥匙开关包括用于在未被激活时提供参考电压信号的电路，从而可以通过不存在参考电压信号来确定故障开关。 具体来说，膜电位计钥匙开关的擦拭器耦合到钥匙开关的电阻元件，位于传感部分和参考部分之间。 通过这种布置，只要键开关不起作用，参考部分提供与任何设置电压信号可区分的参考电压信号，并且也可以与接地状况区分开。 当观察到设置信号时，使用定时器来确定设置信号是用户输入的设置信号还是擦拭器和电阻元件之间的短路。
-
3.发明授权Self-cleaning oven temperature control with multiple redundant oven temperature sensing elements 失效自清洁烤箱温度控制与多个冗余烤箱温度感应元件
公开(公告)号：US4852544A
公开(公告)日：1989-08-01
申请号：US139918
申请日：1987-12-31
CPC分类号： F24C14/02 , F24C7/087 , G05D23/1928 , G05D23/24
摘要： An electric range having a self-cleaning oven utilizes a digital electronic microprocessor based oven temperature control system having multiple, redundant oven temperature sensing elements. The output signal from a first one of the multiple oven temperature sensing elements disposed in the cavity of the oven is used as a primary sensed bake temperature signal for controlling the temperature of the oven during its BAKE mode of operation and as a redundant or back-up sensed clean temperature signal for safely shutting down the oven during its CLEAN mode of operation in the event that the sensed oven temperature significantly exceeds the top of the clean temperature range. Correspondingly, the output signal of a second oven temperature sensing element is used as the primary sensed clean temperature signal for controlling the operation of the oven during its CLEAN mode of operation and as a redundant or back-up sensed bake temperature signal for safely shutting down the oven in the event that the sensed oven temperature during the BAKE mode of operation significantly exceeds the top of the bake temperature range. Oven temperature sensing proves associated with the above two temperature sensors may be individually mounted in separate housings in the oven cavity or may be mounted in a single sensor housing in the oven cavity where space or mounting considerations are particularly acute.
摘要翻译： 具有自清洁烘箱的电气范围利用具有多个冗余的炉温感测元件的基于数字电子微处理器的烘箱温度控制系统。 设置在烤箱空腔中的多个烘箱温度感测元件中的第一个的输出信号被用作主感测的烘烤温度信号，用于在烤箱的BAKE操作模式期间控制烤箱的温度， 在感测到的烘箱温度显着超过清洁温度范围的顶部的情况下，在清洁操作模式下安全关闭烘箱。 相应地，第二烘箱温度感测元件的输出信号用作主要感测清洁温度信号，用于在其清洁操作模式期间控制烘箱的操作，以及作为冗余或备用感测的烘烤温度信号用于安全地关闭 如果在BAKE操作模式下检测到的烘箱温度显着超过烘烤温度范围的顶部，则烘箱。 与上述两个温度传感器相关联的烤箱温度感测可以单独地安装在烤箱腔中的分开的壳体中，或者可以安装在烤箱腔中的单个传感器壳体中，其中空间或安装考虑特别严重。
-
公开(公告)号：US5726589A
公开(公告)日：1998-03-10
申请号：US551663
申请日：1995-11-01
IPC分类号： H03K19/003 , H03K19/0185 , H03K19/0948
CPC分类号： H03K19/00315
摘要： An output driver circuit for a semiconductor chip has a push-pull output with a P-channel pull-up and an N-channel pull-down. Predrivers produce push-pull outputs for driving the gates of the output driver. In previous circuits, a stacked arrangement was usually employed where the N-channel pull-down transistor had another N-channel transistor, with gate connected to the voltage supply, in series with it. In this invention, a parallel N-channel or P-channel transistor is employed to shunt part of the current at the beginning of a transition from high-to-low at the output node of the off-chip driver circuit, and thus lower the voltage across the pull-down transistor to a level which will avoid hot-electron degradation. This parallel transistor is small compared to the main N-channel pull-down, and serves to reduce the output node voltage to a level which does not present a likelihood of hot-electron effects in the main pull-down device. Thus, large current flow through the N-channel pull-down is delayed until the voltage is reduced to an acceptable level. At the same time, this delay is not such as would unduly compromise the high speed nature of the circuits.
摘要翻译： 用于半导体芯片的输出驱动器电路具有P沟道上拉和N沟道下拉的推挽输出。 预驱动器产生用于驱动输出驱动器的门的推挽输出。 在以前的电路中，通常采用堆叠布置，其中N沟道下拉晶体管具有另一个N沟道晶体管，其栅极连接到电压源，与其串联。 在本发明中，并行N沟道或P沟道晶体管用于在片外驱动电路的输出节点从高到低的转变开始时分流电流的一部分，从而降低 跨越下拉晶体管的电压达到避免热电子降解的水平。 该并联晶体管与主N沟道下拉相比较小，并且用于将输出节点电压降低到在主下拉器件中不存在热电子效应的可能性的水平。 因此，延迟通过N沟道下拉的大电流流动直到电压降低到可接受的水平。 同时，这种延迟不是会不利地影响电路的高速性质。
-
公开(公告)号：US4901074A
公开(公告)日：1990-02-13
申请号：US139919
申请日：1987-12-31
IPC分类号： F24C7/08 , H01H13/702 , H01H13/703 , H01H13/785 , H01H13/80
CPC分类号： H01H13/785 , F24C7/082 , H01H13/702 , H01H13/80 , H01H13/703 , H01H2201/008 , H01H2201/028 , H01H2207/016 , H01H2209/026 , H01H2209/038 , H01H2209/04 , H01H2209/06 , H01H2209/082 , H01H2209/084 , H01H2219/03 , H01H2227/002 , H01H2229/062 , H01H2231/012 , H01H2239/018
摘要： A keyboard switch assembly includes a thin, flexible, glass top layer forming a membrane. Disposed on an inner surface of the glass membrane is a first conductive layer forming an electrode. Disposed beneath the first conductive layer is an insulating layer or spacer having an aperture therein that defines a switch contact area. Beneath the spacer a rigid portion of the keyboard switch assembly is provided. The rigid portion of the keyboard switch assembly includes a rigid substrate with a conductive coating formed thereon to provide a second conductive layer or electrode disposed beneath the spacer. A flexible polymer layer may further be disposed between the rigid substrate and the second conductive layer to reduce point contact degradation in the keyboard switch assembly. Decorative paint layers may be formed on the inner surface of the glass membrane between the glass membrane and the first conductive layer. Alternatively, where the layers forming the keyboard switch assembly are transparent, a decorative paint layer may be disposed on an outer surface of the rigid substrate.
摘要翻译： 键盘开关组件包括形成膜的薄的，柔性的玻璃顶层。 设置在玻璃膜的内表面上的是形成电极的第一导电层。 设置在第一导电层下面的是具有限定开关接触面积的孔的绝缘层或间隔物。 在隔板下方提供了键盘开关组件的刚性部分。 键盘开关组件的刚性部分包括其上形成有导电涂层的刚性基板，以提供设置在间隔件下方的第二导电层或电极。 柔性聚合物层可以进一步设置在刚性基板和第二导电层之间，以减少键盘开关组件中的点接触劣化。 可以在玻璃膜和第一导电层之间的玻璃膜的内表面上形成装饰漆层。 或者，形成键盘开关组件的层是透明的，装饰漆层可以设置在刚性基板的外表面上。
-
公开(公告)号：US4746966A
公开(公告)日：1988-05-24
申请号：US789868
申请日：1985-10-21
IPC分类号： H01L21/822 , H01L21/3205 , H01L21/82 , H01L23/485 , H01L23/52 , H01L23/528 , H01L27/02 , H01L27/04 , H01L27/118 , H01L23/48 , H01L29/44 , H01L29/52 , H01L29/60
CPC分类号： H01L24/10 , H01L23/528 , H01L24/13 , H01L27/0211 , H01L27/11898 , H01L2224/13 , H01L2224/13099 , H01L2924/01005 , H01L2924/01013 , H01L2924/01019 , H01L2924/01033 , H01L2924/01076 , H01L2924/01082 , H01L2924/014 , H01L2924/14 , H01L2924/351
摘要： A VLSI chip has multiple annular rings of circuit cells, interspersed with annular wiring channels for interconecting the cells. Another wiring layer runs perpendicular to the rings. A central chip area contains all the I/O connections for the chip.
摘要翻译： VLSI芯片具有多个电路单元的环形环，散布有环形布线通道，用于相互连接单元。 另一个布线层垂直于环。 中央芯片区域包含芯片的所有I / O连接。
-
公开(公告)号：US4043917A
公开(公告)日：1977-08-23
申请号：US672732
申请日：1976-04-01
CPC分类号： B01D37/02 , B01D29/15 , B01D29/52 , B01D29/54 , B01D2201/0453
摘要： A liquid filter apparatus in which a plurality of filter units are disposed in a vessel with each of the filter units comprising a perforated tube and a filter material extending around the tube. A collection manifold is located in the upper portion of the vessel and communicates with the tubes of the filter units for receiving the filtered liquid. A cover is provided separate from the manifold for the vessel and the filter units can be disposed into at least two groups extending in a vertically stacked relationship.
摘要翻译： 一种液体过滤装置，其中多个过滤器单元设置在容器中，每个过滤器单元包括穿孔管和围绕管延伸的过滤材料。 收集歧管位于容器的上部，并与用于接收过滤液体的过滤器单元的管连通。 提供与用于容器的歧管分离的盖，并且过滤器单元可以被布置成以垂直堆叠的关系延伸的至少两个组。
-
公开(公告)号：US4731643A
公开(公告)日：1988-03-15
申请号：US789594
申请日：1985-10-21
IPC分类号： H01L21/822 , H01L21/3205 , H01L21/82 , H01L23/52 , H01L23/528 , H01L27/02 , H01L27/04 , H01L27/118 , H01L23/48
CPC分类号： H01L23/528 , H01L27/0207 , H01L2924/0002
摘要： A VLSI chip has multiple annular rings of circuit cells, interspersed with annular wiring channels for interconnecting the cells. Another wiring layer runs perpendicular to the rings. A central chip area contains all the I/O connections for the chip.
摘要翻译： VLSI芯片具有多个电路单元的环形环，散布有用于互连电池的环形布线通道。 另一个布线层垂直于环。 中央芯片区域包含芯片的所有I / O连接。
-
公开(公告)号：US4394643A
公开(公告)日：1983-07-19
申请号：US258589
申请日：1981-04-29
申请人： Robert R. Williams
发明人： Robert R. Williams
CPC分类号： H03K17/962
摘要： A capacitive touch panel control provided with first and second conductive circuit pads on opposite faces of a thin dielectric sheet in the form of a film secured to a dielectric panel by adhesive. The panel is provided with a touch pad. The circuit pads are disposed so that at least a portion of each is in appositional facial registration with the touch pad and out of appositional facial registration with each other so as to provide a variable capacitance between the circuit pads as an incident of selective touching and non-touching of the touch pad by a user. The circuit pads may form a portion of a printed circuit on the film which further includes electrical conductors for making connection to associated apparatus. Ground conductors may be provided on the film adjacent the output voltage conductors of the circuit to reduce leakage between the circuit conductors. The provision of the circuit pads on opposite faces of the film permits electrically insulated crossover of the conductors for facilitated layout of the circuit.
摘要翻译： 电容式触摸面板控制器，其设置有薄膜电介质薄片的相对表面上的第一和第二导电电路垫片，该薄电介质薄片通过粘合剂固定到电介质面板上。 面板配有触摸板。 电路板被布置成使得每个电路板的至少一部分与触摸板成对准的面部对准，并且彼此不进行配置面部对准，以便在电路板之间提供可选择的触摸事件和非选择性触摸事件的可变电容 用户触摸板的触摸。 电路板可以形成薄膜上的印刷电路的一部分，该印刷电路还包括用于连接到相关设备的电导体。 可以在邻近电路的输出电压导体的膜上提供接地导体，以减少电路导体之间的泄漏。 在膜的相对面上设置电路板允许导体的电绝缘交叉，以便于电路的布局。
-
公开(公告)号：US4134836A
公开(公告)日：1979-01-16
申请号：US691988
申请日：1976-06-02
CPC分类号： B01D29/52 , B01D29/15 , B01D29/54 , B01D35/027 , B01D2201/0453
摘要： A filtering system in which a plurality of filter assemblies are supported in a spaced relation relative to a common header which communicates with each of the assemblies. Each filter assembly consists of a plurality of individual filter units each of which is formed by a perforated tube and a filter material extending around the tube. The fluid to be filtered is drawn through the filter units and the header for passage externally of the system.
摘要翻译： 一种过滤系统，其中多个过滤器组件相对于与每个组件通信的公共头部间隔开地支撑。 每个过滤器组件由多个单独的过滤器单元组成，每个过滤单元由穿孔管和围绕管延伸的过滤材料形成。 要过滤的流体通过过滤器单元和头部被抽吸以通过系统的外部。
-
-
-
-
-
-
-
-
-
搜索结果
21 条记录 (耗时 0.023 秒)
