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公开(公告)号：US5847551A
公开(公告)日：1998-12-08
申请号：US46850
申请日：1998-03-24
申请人： Suneel Arora , David W. Kelly
发明人： Suneel Arora , David W. Kelly
CPC分类号： H02J7/0065 , G05F1/59 , A61N1/3925
摘要： A voltage regulator in a battery powered device, such as an implantable cardiac defibrillator, provides regulated output voltage for other circuits. When large currents are drawn from the battery, such as during charging of defibrillation output capacitors, switches decouple the regulator from receiving power from the battery and couple the regulator to receive power from a stable boost output voltage generated by a boost converter. The regulator provides a stable regulated output voltage less noisy than the boost output voltage. Controlled switch conductances in the regulator provide operation over a wide range of output load currents.
摘要翻译： 电池供电设备中的电压调节器，例如可植入心脏除颤器，为其他电路提供稳压输出电压。 当电池从电池中抽出大电流时，例如在除颤输出电容器充电期间，开关将调节器与电池的接收功率分开，并将稳压器耦合到从升压转换器产生的稳定升压输出电压中接收电力。 稳压器提供的稳定输出电压比升压输出电压低。 调节器中的受控开关电导可在宽范围的输出负载电流下提供工作。
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公开(公告)号：US07969677B2
公开(公告)日：2011-06-28
申请号：US12408847
申请日：2009-03-23
申请人： Jeffrey A. Gleason , Anamul Hoque , David W. Kelly
发明人： Jeffrey A. Gleason , Anamul Hoque , David W. Kelly
CPC分类号： G11B27/36 , G11B2220/2516
摘要： Electronic circuitry and methods are disclosed for monitoring a portion of a write driver, for example, a steady state value of a write driver of a hard disk drive preamplifier. Based on a result of the monitoring, a condition, such as a fault, can be detected in the write driver. For example, apparatus for monitoring a write driver of a disk drive system comprises a comparator circuit coupled to an output of the write driver and configured to compare a value present at the output of the write driver with a reference value such that at least one condition associated with the write driver is detectable as a result of the comparison of the write driver output value and the reference value.
摘要翻译： 公开了用于监视写入驱动器的一部分的电子电路和方法，例如硬盘驱动器前置放大器的写入驱动器的稳定状态值。 基于监视的结果，可以在写入驱动器中检测到诸如故障的状况。 例如，用于监视磁盘驱动器系统的写入驱动器的装置包括一个比较器电路，其耦合到该写入驱动器的一个输出并被配置为将存在于写入驱动器的输出端上的值与一个参考值进行比较，使得至少一个条件 作为写入驱动器输出值和参考值的比较的结果，与写入驱动器相关联的可检测。
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公开(公告)号：US20100238575A1
公开(公告)日：2010-09-23
申请号：US12408847
申请日：2009-03-23
申请人： Jeffrey A. Gleason , Anamul Hoque , David W. Kelly
发明人： Jeffrey A. Gleason , Anamul Hoque , David W. Kelly
IPC分类号： G11B27/36
CPC分类号： G11B27/36 , G11B2220/2516
摘要： Electronic circuitry and methods are disclosed for monitoring a portion of a write driver, for example, a steady state value of a write driver of a hard disk drive preamplifier. Based on a result of the monitoring, a condition, such as a fault, can be detected in the write driver. For example, apparatus for monitoring a write driver of a disk drive system comprises a comparator circuit coupled to an output of the write driver and configured to compare a value present at the output of the write driver with a reference value such that at least one condition associated with the write driver is detectable as a result of the comparison of the write driver output value and the reference value.
摘要翻译： 公开了用于监视写入驱动器的一部分的电子电路和方法，例如硬盘驱动器前置放大器的写入驱动器的稳定状态值。 基于监视的结果，可以在写入驱动器中检测到诸如故障的状况。 例如，用于监视磁盘驱动器系统的写入驱动器的装置包括一个比较器电路，其耦合到该写入驱动器的一个输出并被配置为将存在于写入驱动器的输出端上的值与一个参考值进行比较，使得至少一个条件 作为写入驱动器输出值和参考值的比较的结果，与写入驱动器相关联的可检测。
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4.发明授权公开(公告)号：US07595951B2
公开(公告)日：2009-09-29
申请号：US11445535
申请日：2006-06-02
IPC分类号： G11B15/12
摘要： A (e.g., hard-disk drive (HD)) system supports reader standby mode and/or writer standby mode. For reader standby mode, reader circuitry in the system's preamplifier is transitioned to a low-power mode during write operations. To provide quick transition from write mode to read mode, the reader circuitry is transitioned to pre-read mode before the end of the write operation. For writer standby mode, the preamplifier's writer circuitry is transitioned to a low-power mode during read operations. To provide quick transition from read mode to write mode, the writer circuitry is transitioned to a pre-write mode before the end of the read operation. The availability of a reader standby mode during write operations and a writer standby mode during read operations reduces power consumption as compared to HD systems that leave the reader circuitry in pre-read mode throughout each write operation and the writer circuitry in pre-write mode throughout each read operation.
摘要翻译： A（例如，硬盘驱动器（HD））系统支持读取器待机模式和/或写入器待机模式。 对于读取器待机模式，系统前置放大器中的读取器电路在写入操作期间转换为低功耗模式。 为了提供从写入模式到读取模式的快速转换，读写器电路在写操作结束之前转换到预读模式。 对于写入器待机模式，在读取操作期间，前置放大器的写入器电路转换为低功耗模式。 为了提供从读取模式到写入模式的快速转换，写操作器电路在读取操作结束之前转换到预写模式。 在写入操作期间读写器待机模式和读取操作期间写入器待机模式的可用性与在整个写入操作期间使读取器电路处于预读取模式并且以写入前模式的写入器电路全部停止的HD系统相比，降低功耗 每次读操作。
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公开(公告)号：US06667843B2
公开(公告)日：2003-12-23
申请号：US09797395
申请日：2001-03-01
IPC分类号： G11B502
CPC分类号： G11B5/5521
摘要： An error amplifier for use in a disk drive actuator system having an actuator motor for radially positioning a transducing head with respect to a rotatable disk is newly designed to enable full implementation as an integrated circuit. The error amplifier includes a switched-capacitor proportional-integral controller for comparing first and second differential input signals representing a respective actual current and commanded current for driving the actuator motor, and providing a differential output signal. A transconductor-capacitor filter is connected to filter the differential output signal of the switched-capacitor integrator, and provides a motor control signal to control the actuator motor.
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公开(公告)号：US5869970A
公开(公告)日：1999-02-09
申请号：US550835
申请日：1995-10-31
申请人： William A. Palm , Lloyd A. Van Hofwegen , Jean-Cheui Hsung , Michael W. Dooley , Keith R. Maile , William J. Linder , David W. Kelly , Jeffrey Laackmann , Richard J. Wessels
发明人： William A. Palm , Lloyd A. Van Hofwegen , Jean-Cheui Hsung , Michael W. Dooley , Keith R. Maile , William J. Linder , David W. Kelly , Jeffrey Laackmann , Richard J. Wessels
CPC分类号： A61N1/378 , A61N1/3708 , A61N1/3937 , A61N1/3975 , A61N1/3981 , Y10T307/826 , Y10T307/839 , Y10T307/858
摘要： A power management system for an implantable device is disclosed. One application is an implantable cardioverter/defibrillator. Charging circuits for implantable cardioverter/defibrillators require relatively large currents from the power supply. The present power management system provides extended device operation and reduced charge cycle time. The present system monitors both current and voltage drawn from the power supply to prevent a loss of system voltage. Elective replacement indication is performed using charging information provided by the present power management system.
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公开(公告)号：US5757167A
公开(公告)日：1998-05-26
申请号：US678965
申请日：1996-07-12
申请人： Suneel Arora , David W. Kelly
发明人： Suneel Arora , David W. Kelly
CPC分类号： H02J7/0065 , G05F1/59 , A61N1/3925
摘要： A voltage regulator in a battery powered device, such as an implantable cardiac defibrillator, provides regulated output voltage for other circuits. When large currents are drawn from the battery, such as during charging of defibrillation output capacitors, switches decouple the regulator from receiving power from the battery and couple the regulator to receive power from a stable boost output voltage generated by a boost converter. The regulator provides a stable regulated output voltage less noisy than the boost output voltage. Controlled switch conductances in the regulator provide operation over a wide range of output load currents.
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公开(公告)号：US4781839A
公开(公告)日：1988-11-01
申请号：US106474
申请日：1987-10-08
申请人： David W. Kelly , Stewart N. Paul , John E. Waller
发明人： David W. Kelly , Stewart N. Paul , John E. Waller
CPC分类号： C02F1/5263 , C02F1/5236 , C02F1/54
摘要： Methods are described for flocculating and removing solids suspended in water using an inorganic component containing iron, aluminum, or a mixture thereof in combination with a tannin-based flocculant produced by reacting a condensed tannin with an amino compound and an aldehyde. The tannin-based flocculant is preferably the product of a controlled reaction in which the viscosity is monitored as an indication of suitable shelf life.
摘要翻译： 描述了使用含有铁，铝或其混合物的无机组分与悬浮在水中的固体絮凝和除去与通过缩合单宁与氨基化合物和醛反应制备的单宁絮凝剂的方法。 单宁絮凝剂优选是受控反应的产物，其中粘度被监测作为适当保质期的指标。
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9.发明授权Composition and method for flocculating and removing solids suspended in water 失效用于絮凝和去除悬浮在水中的固体的组合物和方法
公开(公告)号：US4734216A
公开(公告)日：1988-03-29
申请号：US897905
申请日：1986-08-19
申请人： David W. Kelly , Stewart N. Paul , John E. Waller
发明人： David W. Kelly , Stewart N. Paul , John E. Waller
CPC分类号： C02F1/5263 , C02F1/5236 , C02F1/54
摘要： A composition and method are described for flocculating and removing solids suspended in water using an inorganic component containing iron, aluminum, or a mixture thereof in combination with a tannin-based flocculant produced by reacting a condensed tannin with an amino compound and an aldehyde. The tannin-based flocculant is preferably the product of a controlled reaction in which the viscosity is monitored as an indication of suitable shelf life.
摘要翻译： 描述了一种组合物和方法，用于使用含铁，铝或其混合物的无机组分与悬浮在水中的固体一起絮凝和除去与缩合单宁与氨基化合物和醛反应制备的单宁絮凝剂。 单宁絮凝剂优选是受控反应的产物，其中粘度被监测作为适当保质期的指标。
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10.发明授权Output compensated voltage regulator, an IC including the same and a method of providing a regulated voltage 有权输出补偿电压调节器，包括其的IC和提供调节电压的方法公开(公告)号：US07990219B2
公开(公告)日：2011-08-02
申请号：US12250427
申请日：2008-10-13
申请人： Jeffrey A. Gleason , David W. Kelly , Paul Mazur
发明人： Jeffrey A. Gleason , David W. Kelly , Paul Mazur
IPC分类号： H92M3/04
CPC分类号： G05F1/56
摘要： A voltage regulator, a method of regulating voltage and an IC including a voltage regulator. In one embodiment, the voltage regulator includes: (1) a DC precision amplifier configured to generate a DC precision signal based on a reference voltage and a regulated output of the voltage regulator and (2) a response amplifier, coupled in parallel with the DC precision amplifier, configured to generate an error signal based on the reference voltage and the regulated output, the response amplifier further configured to generate the regulated output based on a regulating signal comprised of the error signal and the DC precision signal. The DC precision amplifier may be a CMOS amplifier and the response amplifier may be a NPN amplifier.
摘要翻译： 电压调节器，调节电压的方法和包括电压调节器的IC。 在一个实施例中，所述电压调节器包括：（1）DC精密放大器，被配置为基于所述电压调节器的参考电压和稳压输出产生DC精度信号;以及（2）响应放大器，其与所述DC 精密放大器，被配置为基于参考电压和调节输出产生误差信号，所述响应放大器还被配置为基于由所述误差信号和所述DC精度信号组成的调节信号来产生所述调节输出。 DC精密放大器可以是CMOS放大器，并且响应放大器可以是NPN放大器。
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