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公开(公告)号：US4065715A
公开(公告)日：1977-12-27
申请号：US702110
申请日：1976-07-02
申请人： James M. Jaffe , John W. Hile
发明人： James M. Jaffe , John W. Hile
摘要： A transducer for producing a pulse duration modulated signal in accord with the value of a parameter. A reference capacitor-resistance circuit is provided having a predetermined rate of capacitor discharge and a second capacitor-resistance circuit is provided having a capacitor and a resistor, one of which is varied in accordance with the parameter to define a rate of capacitor discharge determined by the parameter. Each of the capacitors is periodically charged in unison to a predetermined voltage. Respective level detectors monitor the capacitor voltage charges and generate respective digital signals when the voltage charge monitored is greater than a predetermined reference below which each capacitor discharges during the time interval between charges. A logic circuit monitors the digital signals and produces a series of pulses having durations determined by the value of the parameter.
摘要翻译： 用于根据参数的值产生脉冲持续时间调制信号的换能器。 提供具有预定速率的电容器放电的参考电容器电阻电路，并且提供具有电容器和电阻器的第二电容器电阻电路，其中一个电容器和电阻器根据参数而变化，以限定电容器放电率，由 参数。 每个电容器被一致地定时充电到预定的电压。 各电平检测器监测电容器电压电荷，并在监测到的电压电荷大于预定参考值时产生相应的数字信号，低于该预定参考值，每个电容器在电荷之间的时间间隔期间放电。 逻辑电路监视数字信号并产生具有由参数的值确定的持续时间的一系列脉冲。
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公开(公告)号：US4119440A
公开(公告)日：1978-10-10
申请号：US745050
申请日：1976-11-26
申请人： John W. Hile
发明人： John W. Hile
IPC分类号： H01L21/265 , H01L27/02 , H01L27/07 , H01L29/866 , H01L29/90
CPC分类号： H01L27/0248 , H01L21/2652 , H01L27/0255 , H01L27/0727 , H01L27/0761 , H01L29/866 , Y10S148/01 , Y10S438/983
摘要： A method of making a zener diode having an accurately predetermined breakdown voltage. A discrete device and integrated circuit adaptation of this device is disclosed. A specially highly doped opposite conductivity type island is embedded in a high resistivity body portion. Embedded in the body portion contiguous the island is an ion implanted surface portion of the one conductivity type. The surface portion has an accurately predetermined concentration of conductivity determining impurity atoms in the range of about 1 .times. 10.sup.16 to 1 .times. 10.sup.19 atoms per cubic centimeter. A PN junction having a high breakdown voltage separates the island from the body. A PN junction having a lower but accurately predetermined breakdown voltage separates the island from the surface portion and forms a zener junction. In integrated circuit adaptations, this device preferably shares a transistor electrode for a transistor junction that is to be protected from overvoltage effects.
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公开(公告)号：US5263380A
公开(公告)日：1993-11-23
申请号：US836678
申请日：1992-02-18
CPC分类号： G01P5/10 , G01F1/6845 , G01F1/696
摘要： An apparatus comprises a sensor including a heater, an upstream detector and a downstream detector. An AC signal source excites the heater to generate propagating heat signals that are received by the upstream and downstream detectors. A first detecting circuit provides a first output signal responsive to the propagating heat signals received by the first detector and a second detecting circuit provides a second output signal responsive to the propagating heat signals received by the downstream detector. A difference circuit subtracts the first and second signals to obtain a difference signal and an output circuit provides an output signal responsive to the difference signal, which reflects both magnitude and phase. The resulting output signal has improved resolution and provides for improved sensor sensitivity.
摘要翻译： 一种装置包括具有加热器，上游检测器和下游检测器的传感器。 AC信号源激励加热器产生由上游和下游检测器接收的传播热信号。 第一检测电路提供响应于由第一检测器接收的传播热信号的第一输出信号，第二检测电路响应于由下游检测器接收的传播热信号提供第二输出信号。 差分电路减去第一和第二信号以获得差分信号，并且输出电路响应于反映幅度和相位的差分信号提供输出信号。 所得到的输出信号具有改进的分辨率并提供改进的传感器灵敏度。
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公开(公告)号：US4051504A
公开(公告)日：1977-09-27
申请号：US622081
申请日：1975-10-14
申请人： John W. Hile
发明人： John W. Hile
IPC分类号： H01L21/265 , H01L27/02 , H01L27/07 , H01L29/866 , H01L29/90
CPC分类号： H01L27/0248 , H01L21/2652 , H01L27/0255 , H01L27/0727 , H01L27/0761 , H01L29/866 , Y10S148/01 , Y10S438/983
摘要： A zener diode having an accurately predetermined breakdown voltage, and a method of making such a zener diode. A discrete device and integrated circuit adaptation of this device is disclosed. A specially highly doped opposite conductivity type island is embedded in a high resistivity body portion. Embedded in the body portion contiguous the island is an ion implanted surface portion of the one conductivity type. The surface portion has an accurately predetermined concentration of conductivity determining impurity atoms in the range of about 1 .times. 10.sup.16 to 1 .times. 10.sup.19 atoms per cubic centimeter. A PN junction having a high breakdown voltage separates the island from the body. A PN junction having a lower but accurately predetermined breakdown voltage separates the island from the surface portion and forms a zener junction. In integrated circuit adaptations, this device preferably shares a transistor electrode for a transistor junction that is to be protected from overvoltage effects.
摘要翻译： 一种制造具有精确预定击穿电压的齐纳二极管的方法。 公开了该装置的分立器件和集成电路适配。 特别高度掺杂的相反导电型岛嵌入高电阻体部分。 嵌入在邻近岛体的身体部分是一种导电类型的离子注入表面部分。 表面部分具有精确预定浓度的电导率，确定杂质原子在约1×1016至1×1019原子/立方厘米的范围内。 具有高击穿电压的PN结将岛与体分开。 具有较低但准确预定的击穿电压的PN结将该岛与表面部分分离并形成齐纳结。 在集成电路适配中，该器件优选地共享用于晶体管结的晶体管电极，以防止过电压效应。
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公开(公告)号：US4001676A
公开(公告)日：1977-01-04
申请号：US608076
申请日：1975-08-27
申请人： John W. Hile , Paul R. Rabe
发明人： John W. Hile , Paul R. Rabe
IPC分类号： G01F23/26 , G01R19/165 , G01R27/26
CPC分类号： G01R19/16585 , G01F23/266
摘要： An apparatus for providing a warning when the magnitude of a monitored parameter, such as vehicle fuel level, is within a critical range. A charge pump repeatedly charges a variable capacitor having a capacitance progressively changing with the magnitude of the monitored parameter and a reference capacitor having a capacitance equal to the capacitance of the variable capacitor when the magnitude of the monitored parameter is at the threshold of the critical range. After each charge, the two capacitors are discharged at a controlled rate with their voltage charge being monitored by threshold detectors, each of which provides an output when the voltage across the respective capacitor exceeds a specified level. The outputs of the threshold detectors are coupled to a logic circuit which compares the duration of the outputs of the threshold detectors and generates an output when the duration of the output from the level detector monitoring the reference capacitor varies from the time duration of the output from the level detector monitoring the reference capacitor in a sense representing a critical magnitude of the condition. An indicator is responsive to the output signal from the logic circuit for providing a warning of the critical magnitude of the condition.
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